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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 57104. Отображено 100.

12-01-2012 дата публикации

Tensile Testing Device

Номер: US20120006126A1

Автор: Feng-Chi Lee, Kuo-Chuan Chiu

Принадлежит: Cheng Uei Precision Industry Co Ltd

A tensile testing device includes a supporting unit, a cantilever unit and a connecting unit. The supporting unit defines a plurality of mating elements secured thereon for mating with a detected element. The cantilever unit is connected with the detected element by a lead for reading the tension. The connecting unit includes a penal attached on a lateral surface of the supporting unit, a turning plate pivotally installed on a front surface of the panel and rotated around a first axis which is perpendicular to the lateral surface, a first connecting block fastened to a front surface of the turning plate, and a second connecting block of which rear end pivotally connects the first connecting block and turns around a second axis perpendicular to the first axis.

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Номер записи: 1

01-03-2012 дата публикации

Device for measuring the torque of a hairspring

Номер: US20120048035A1

Автор: Marc CERUTTI

Принадлежит: ROLEX SA

A device for measuring the torque of a hairspring for a balance wheel-hairspring oscillator includes an arbor on which a seat is arranged, a benchmark element, pivoting means for pivoting the arbor, means for keeping the outer end of the hairspring fixed relative to the arbor during measurement, elastic elements provided on a portion of the seat, and means for acting on the elastic elements. The inner end of said hairspring is secured to a collet, the diameter of the seat of the arbor is of a dimension to allow a driving connection by friction with the wall of an axial aperture of the collet, and the elastic elements are formed to bring, under the action of the action means, the section of the portion of the seat forming the driving connection from a greater dimension to a smaller dimension than that of the axial aperture of the collet.

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Номер записи: 2

15-03-2012 дата публикации

Conductor for electric wire, and electric wire for automobile

Номер: US20120061122A1

Автор: Hiroyuki Kodama, Misato Kusakari, Taichirou Nishikawa, Yasuyuki Otsuka

Принадлежит: AutoNetworks Technologies Ltd, Sumitomo Electric Industries Ltd, Sumitomo Wiring Systems Ltd

A conductor for electric wire that has excellent strength and excellent weldability, and an electric wire for automobile including the conductor. The conductor for electric wire contains a copper alloy having an oxygen content of 50 mass parts per million or less, the copper alloy containing 0.1 to 0.6 mass % Mg, and a balance of copper and an unavoidable impurity. It is preferable that the copper alloy further contains one or a plurality of material elements selected from the group consisting of Ag, In, Sr and Ca, the selected one or plurality of material elements being 0.0005 to 0.3 mass % in total. It is preferable that the copper alloy further contains 0.2 to 0.75 mass % Sn.

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Номер записи: 3

05-04-2012 дата публикации

Method and Apparatus for Quality Control and Quality Assurance of Sized Bridging Materials Used in Drill-In Fluid Formulation

Номер: US20120079888A1

Автор: Abdulaziz S. Bubshait, Clayton L. Miller, Darrell W. Foreman, John T. Allen, Md. Amanullah

Принадлежит: Saudi Arabian Oil Co

Methods and apparatuses are provided for testing and quantifying structural durability characteristics of bridging materials. Embodiments include sieving bridging materials to create uniform batches having particles within a predefined range. Embodiments further include selecting a batch and drying the batch, separating the dried batch into dry samples, and selecting a test sample having an initial mass. Embodiments include sealing the test sample, a volume of liquid, and a rod in a cylindrical testing cell and rotating the cylindrical testing cell containing the rod such that the rod rolls in relation to an inner wall of the cylindrical testing cell and applies force partially crushing the test sample. Embodiments further include sieving a resulting sample to create a durable sample having particles within the predefined range and drying the durable sample. Embodiments of methods further include measuring a mass of the dried durable sample to define a durable mass and comparing the durable mass to the initial mass.

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Номер записи: 4

26-04-2012 дата публикации

Hardness test method and program

Номер: US20120101743A1

Автор: Eiji Furuta, Takeshi Sawa

Принадлежит: Mitutoyo Corp

A hardness test method performed by a controller of a hardness tester includes a first measurement process measuring an indentation curve (indentation history curve) for a plurality of times under a same condition with respect to a test specimen for verification in a predetermined environment; a setting process setting an acceptable range of variation in a load loading curve based on load loading curves (load loading history curves) of the plurality of the indentation curves obtained by the first measurement process; a second measurement process measuring an indentation curve under a same condition as the first measurement process with respect to the test specimen in an actual usage environment; and a judging process judging whether a load loading curve of the indentation curve measured by the second measurement process is within the acceptable range of variation in a load loading curve set by the setting process.

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Номер записи: 5

03-05-2012 дата публикации

Method for determining the recovery grade in artificial fiber carpets

Номер: US20120106804A1

Автор: Cristina Gomez Andres, Emanuel Testa, Margarita Canales Compes, Miguel Angel Jimenez Caballero

Принадлежит: Mondo SpA

A method for determining the recovery grade in artificial fiber carpets, such as artificial turf, including obtaining samples of the artificial fiber carpets to be examined in order to capture an image, by a camera and lightbulb under conditions of controlled exposure, of the area of the fibers which will subsequently be subjected to supporting a load. In a certain area of the fibers, in a vertical compressive manner, a load of known mass during a predetermined time is applied, for once the load is released, capturing elevational images, according to the same area of the fibers subjected to the load, at predetermined time intervals. The recovery index of the fibers subjected to analysis based on the area occupied by the fibers is determined before being subjected to the load and after the different predetermined time intervals.

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Номер записи: 6

24-05-2012 дата публикации

Quantitative acoustic emission non-destructive inspection for revealing, typifying and assessing fracture hazards

Номер: US20120125108A1

Автор: Boris Muravin, Gregory Muravin, Itzik Mizrahi, Ludmila Lezvinsky

Принадлежит: Margan Physical Diagnostics Ltd

Inspecting for fracture hazards by detecting a presence of at least one flaw development process in an equipment under inspection, the flaw development process being corrosion product nucleation and development, pitting, plastic deformation development, and/or micro-cracking. Detecting the presence of the flaw development process includes (a) determining at least one characteristic acoustic emission (AE) signature associated with a respective flaw development process, and (b) measuring an AE from each of a plurality of locations within the equipment. Presence of the respective flaw development process is identified only when the measured AE conforms to the characteristic AE signature within a predetermined tolerance. A fracture hazard is determined to exist only when (a) a quantity of the identified flaw development processes exceeds a first predetermined threshold and/or (b) a magnitude of at least one of the identified flaw development processes exceeds a second predetermined threshold.

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Номер записи: 7

07-06-2012 дата публикации

Local buckling performance evaluating method for steel pipe, steel pipe designing method, steel pipe manufacturing method, and steel pipe

Номер: US20120143527A1

Автор: Katsumi Masamura, Nobuhisa Suzuki

Принадлежит: JFE Steel Corp

A method for evaluating local buckling performance of a steel pipe includes obtaining a stress-strain relationship of a material having a yield plateau in the stress-strain relationship; determining the comparison of a starting strain of strain-hardening in the stress-strain relationship obtained and a critical strain of the steel pipe; and evaluating that the steel pipe has a possibility of being applied to a structure that requires plastic design when the critical strain is determined to be larger than the starting strain and evaluating that the steel pipe has no possibility of being applied to a structure that requires plastic design when the critical strain is determined to be not larger than the starting strain.

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Номер записи: 8

21-06-2012 дата публикации

Nondestructive Test For Flexible Composites

Номер: US20120151989A1

Автор: John Graeme Knox, Tulin K. Markes

Принадлежит: Gates Corp

A method for testing internal differences in reinforced flexible composites including placing a flexible composite on a rigid support structure, tapping the composite with a tapper of predetermined mass, determining a value representative of the impact duration of the tap and/or computing a value representative of the local stiffness of the composite. The composite may be a power transmission belt or portion thereof with tensile cord reinforcement. The method is useful for comparing the degree of penetration of elastomer into the tensile cord, for example in a cast polyurethane toothed belt.

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Номер записи: 9

16-08-2012 дата публикации

Soft tissue elasticity distribution measurement method and soft tissue elasticity distribution measurement device

Номер: US20120209146A1

Автор: Kazuaki Nagayama, Shinichi Miyano, Takeo Matsumoto

Принадлежит: Nagoya Institute of Technology NUC

An aspiration chamber is provided with an aspiration aperture, having a shape in which a width becomes larger from one edge toward another edge, and aspirates soft tissue through the aspiration aperture. A deformation amount measurement portion measures aspiration deformation amounts of the soft tissue within the aspiration aperture along a virtual line from the one edge to another edge. Based on the aspiration deformation amounts that have been measured by the deformation amount measurement portion, a computer uses a finite element model of the soft tissue to derive an approximation equation according to a numerical function for the aspiration deformation amounts and positions on the virtual line and determines a distribution of elasticity from the surface of the soft tissue into its interior by substituting parameters of the approximation equation into estimation equations that are derived by assuming that the deformation along the virtual line reflects elasticity distribution parameters.

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Номер записи: 10

06-09-2012 дата публикации

Short Beam Shear Test Fixture

Номер: US20120222491A1

Автор: David L. Williams

Принадлежит: BELL HELICOPTER TEXTRON INC

The test fixture includes a housing, a first grip, and a second grip. The first grip and the second grip are each configured to clamp onto an upper surface and lower surface of a material coupon. The test fixture also includes an upper input jaw and a lower input jaw each configured to clamp onto the material coupon near a center of the upper surface and the lower surface of the material coupon. The test fixture is configured to load the material coupon in a first direction and a second direction. The first grip and the second grip are each configured to clamp onto the material coupon at a location which accordingly results in a desired testing ratio regardless of a variation in thickness of the material coupon.

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Номер записи: 11

27-09-2012 дата публикации

Apparatus and method for over-peak loading for creep-rupture testing

Номер: US20120240688A1

Автор: Jeffrey Lynn Myers

Принадлежит: General Electric Co

A method and testing apparatus including first and second load adjusting mechanisms for cyclically applying and reducing first and second tensile loads on a specimen and first and second controllers connected to the first and second load adjusting mechanisms for independently cycling the loads which are additive. Cycling the first and second loads for peak loading and over-peak loading the specimen respectively and controlling first and second loading rates and first and second dwell periods of first and second cycles for peak loading and over-peak loading respectively. The second load adjusting mechanism may include an inflatable over-peak device resting on a plate mounted to a frame of the apparatus. The device includes a hollow housing for supporting the second load, an inflatable bladder within the housing, and a bladder lower portion extending out of an opening at a bottom of the housing when the bladder is inflated.

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Номер записи: 12

25-10-2012 дата публикации

Method for evaluating hit feeling

Номер: US20120266652A1

Автор: Masahiko Ueda, Masatoshi Kato, Naoyoshi UEDA, Takeshi Asakura

Принадлежит: Dunlop Sports Co Ltd

An evaluation method for hit feeling of a sport implement according to the present invention includes an acceleration measurement step for measuring acceleration of a sport hitting tool 4 and a data analysis step for analyzing data obtained in the measurement. In the data analysis step, an amount of change in acceleration in a first cycle of vibration after hitting is calculated. The evaluation method evaluates hit feeling to be felt by a person, using the amount of change in the acceleration. Preferably, in the data analysis step, an amount of change in acceleration in the first cycle of predetermined time is calculated. The predetermined time is within 1.5 msec from the time of hitting. Preferably, the sport hitting tool 4 has the hitting section detachably attached to a shaft section.

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Номер записи: 13

08-11-2012 дата публикации

Combined bending and torsion test system and method

Номер: US20120279312A1

Автор: Walter Franklin

Принадлежит: Lockheed Martin Corp

A fixture for testing a tubular member simultaneously in bending and torsion is disclosed. The fixture includes first and second attachment elements that are configured to couple to the tubular member, and a load shoe that is configured to fit within the tubular member. The load shoe includes a body having a contact surface configured to contact a portion of an internal surface of the tubular member and at least one load reaction strut coupled to the body. The load reaction strut is configured to pass through a hole in the tubular member and accept a first force applied in a first direction that is perpendicular to an axis of symmetry of the tubular member.

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Номер записи: 14

22-11-2012 дата публикации

Micro electro-mechanical heater

Номер: US20120292528A1

Автор: Edward Cyrankowski, Oden Lee Warren, Syed Amanulla Syed Asif, Yunje Oh

Принадлежит: Hysitron Inc

A sub-micron scale property testing apparatus including a test subject holder and heating assembly. The assembly includes a holder base configured to couple with a sub-micron mechanical testing instrument and electro-mechanical transducer assembly. The assembly further includes a test subject stage coupled with the holder base. The test subject stage is thermally isolated from the holder base. The test subject stage includes a stage subject surface configured to receive a test subject, and a stage plate bracing the stage subject surface. The stage plate is under the stage subject surface. The test subject stage further includes a heating element adjacent to the stage subject surface, the heating element is configured to generate heat at the stage subject surface.

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Номер записи: 15

06-12-2012 дата публикации

Measurement device for minimizing external magnetic disturbance

Номер: US20120310581A1

Автор: Kwon Sang Ryu, Seung Hoon Nahm, Soo Young Park, Young Il Kim

Принадлежит: Korea Research Institute of Standards and Science KRISS

Provided is a ΔE measuring device minimizing external magnetic disturbance, more particularly, a ΔE measuring device measuring a change (ΔE) in elastic modulus under a magnetic field by removing a bias effect by the earth's magnetic field and a magnetic tool and device and using a magneto acoustic resonance method. With the ΔE measuring device, a space minimizing external magnetic disturbance using three-axis Helmholtz coils is provided and the ΔE measuring device having a plurality of coil structures is inserted into the space, thereby making it possible to minimize external magnetic field disturbance.

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Номер записи: 16

27-12-2012 дата публикации

Method for detecting the mechanical stress to which a part made of a magnetostrictive material is subjected

Номер: US20120326710A1

Автор: Antoine Viana, Laure-Line Rouve

Принадлежит: Institut Polytechnique de Grenoble

The invention relates to a method for detecting the stress to which a part of a magnetic material having a detectable magnetostriction, such as a ferromagnetic material, is submitted, comprising the steps of: a) applying a variable stress to the part b) measuring the magnetic field (B) in the vicinity of the part during the application of the variable stress to the part; and c) comparing the measurement with a reference measurement.

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Номер записи: 17

21-03-2013 дата публикации

Hardness tester and hardness test method

Номер: US20130068001A1

Автор: Shinichi Sadahiro

Принадлежит: Mitutoyo Corp

A hardness tester includes: an image capture control portion for obtaining an image data of the surface of the sample by controlling and making an image capture portion capture an image of the surface; an impression region extracting portion that binarizes the image data, applies reduction/expansion processing to the binarized image data, applies a distance conversion processing to the reduction/expansion processed image data, and extracts a closed region corresponding to a contour of the indenter by using the distance-converted image data; an impression vertex extracting portion that estimates the vertex for measuring the impression based on a profile of the closed region and extracts a point in the binarized image data, as the vertex for measuring the impression, that agrees with a predetermined condition; and a hardness calculating portion for calculating hardness of the sample based on the vertexes for measuring the impression.

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Номер записи: 18

04-04-2013 дата публикации

Array for sensing and inducing strain in an adhesively bonded joint including magnetostrictive material

Номер: US20130081475A1

Автор: Gary E. Georgeson, Robert J. Miller

Принадлежит: Boeing Co

Sensing strain in an adhesively bonded joint includes inducing a strain wave in the joint, and sensing a change in local magnetic characteristics in the joint.

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Номер записи: 19

04-04-2013 дата публикации

Degree of hardness measurement system and degree of hardness measurement method

Номер: US20130085417A1

Автор: Akihiko Kandori, Kuniomi Ogata, Ryuzo KAWABATA, Takako Mizoguchi, Yuko Sano

Принадлежит: HITACHI LTD

For measuring hardness of an object, a measurement apparatus is pushed against the object and a degree of hardness calculation system calculates hardness based on information from the measurement apparatus. The measurement apparatus includes an acceleration sensor which outputs first information of acceleration of a contact area of the measurement apparatus, and a second sensor, such as a magnetic sensor or a pressure sensor, which outputs second information based on pressure applied to the contact area. The degree of hardness calculation system generates a second-derivative waveform by twice differentiating a waveform based on the output of the second sensor, compares the second-derivative waveform and the information of acceleration from the acceleration sensor, and calculates hardness of the object based on the comparison result.

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Номер записи: 20

25-04-2013 дата публикации

Flat Laminate, Symmetrical Test Structures and Method of Use To Gauge White Bump Sensitivity

Номер: US20130098176A1

Автор: David L. Questad, Timothy H. Daubenspeck, Valerie A. Oberson, Virendra R. Jadhav, William E. Bernier

Принадлежит: International Business Machines Corp

A symmetrical, flat laminate structure used to minimize variables in a test structure to experimentally gauge white bump sensitivity to CTE mismatch is disclosed. The test structure includes a flat laminate structure. The method of using the test structure includes isolating a cause of a multivariable chip join problem that is adversely impacted by warpage and quantifying a contribution of the warpage, itself, in a formation of the multivariable chip join problem.

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Номер записи: 21

30-05-2013 дата публикации

Methods and devices for testing blow-out panels

Номер: US20130133414A1

Автор: Biagio De Maio, Francesco Rainone, Graziano CAPONE, Igino COVINO, Salvatore Cuomo

Принадлежит: ALENIA AERMACCHI SPA

Blow-out testing devices which include a box-like housing defining two contiguous inner chambers communicating directly with one another through an inner aperture which is closable by applying a blow-out panel thereupon are provided. In such devices at least one of the two chambers is provided with a hermetically closable door. Both chambers are pressurized and sealed. Opening the door, an instant pressure drop is caused in one of the two chambers. The pressure within the other chamber causes the panel to break. Methods for blow-out testing are also provided.

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Номер записи: 22

13-06-2013 дата публикации

Apparatus for interfacing with a test specimen

Номер: US20130145858A1

Автор: Caleb Richard HORST, G. Wayne Brodland

Принадлежит: Waterloo Instruments Inc

The disclosure is directed at a system for applying a displacement, strain, stress or load to a test specimen. The system includes an interface manufactured from a deformable material which is connected to an actuator and to the test specimen. Application of a displacement by the actuator causes the test specimen to displace in multiple directions.

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Номер записи: 23

27-06-2013 дата публикации

Heating in material testing apparatus

Номер: US20130163634A1

Автор: James Frank Smith, Nicholas Pickford

Принадлежит: MICRO MATERIALS LTD

A method of controlling the temperature of a probe in materials testing apparatus, and apparatus operating by that method are disclosed. The apparatus includes heating elements that can by supplied with energy to apply heat to the probe. The method has a heating phase. In the heating phase, closed-loop temperature control is used to supply energy to the heating elements to heat the probe to a target temperature. When the probe has reached the target temperature, the average power that is being supplied to the heating elements is determined. Then, in a temperature maintenance phase, a continuous constant source of energy at a power that is substantially equal to the determined average power is supplied to the heating elements to maintain the probe at the target temperature.

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Номер записи: 24

27-06-2013 дата публикации

Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts

Номер: US20130166214A1

Автор: Federico Bellin

Принадлежит: Varel International Industries LP

An acoustic emissions testing device includes a test cutter including a first surface, an acoustic sensor, an indenter coupled to the first surface, and a load. The load is exerted on the indenter, which transfers the load to the first surface. The acoustic sensor is communicably coupled to the test cutter and detects one or more acoustic events occurring therein. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the test cutter is objectively determined and can be ranked comparatively to the toughness of other test cutters. The load is ramped up to a peak load, held for a period of time, and then ramped down. Cutters from the same cutter type as the test cutters have similar toughness.

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Номер записи: 25

25-07-2013 дата публикации

Testing Methods And Pass/Fail Criteria For Electric Joints

Номер: US20130187658A1

Автор: Humi Widhalm

Принадлежит: FORD GLOBAL TECHNOLOGIES LLC

In one embodiment, a method of evaluating a battery module includes: applying a tension load to a test coupon, the test coupon including a segment of a battery terminal connected to a segment of an interconnector busbar; and measuring electrical resistance across the segments of the test coupon. In certain instances, the method further includes applying a different, second tension load to the segments of the test coupon and repeating the measuring of electrical resistance. In certain other instances, the method further includes forming a plot between various values of electrical resistance as a function of various tension loads.

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Номер записи: 26

15-08-2013 дата публикации

Rubber product elastic response performance prediction method, design method, and elastic response performance prediction apparatus

Номер: US20130211802A1

Автор: Keizo Akutagawa

Принадлежит: Bridgestone Corp

An elastic response performance prediction method that employs a finite element analysis method to predict an elastic response performance expressing deformation behavior of a rubber product. The elastic response performance of the rubber product is predicted by employing a constitutive equation that expresses temperature and strain dependence of strain energy in the rubber product expressed using a parameter representing intermolecular interaction.

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Номер записи: 27

22-08-2013 дата публикации

Fatigue testing device for wind turbine blade testing, a method of testing wind turbine blades and a control system for a blade testing actuator

Номер: US20130213136A1

Автор: Stuart Guy

Принадлежит: Vestas Wind Systems AS

The invention provides a fatigue exciter for wind turbine blades. Wind turbine blades require excitation at or near their natural frequency to induce bending moments that simulate in service loadings and must be easily controllable and with the minimum of unnecessary added mass or force. The invention provides a device and a method by which force controlled feedback is used for finding an optimal excitation frequency. This force could be provided e.g. by a digital signal generator.

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Номер записи: 28

26-09-2013 дата публикации

Material testing machine

Номер: US20130247680A1

Автор: Tomotaka OTA

Принадлежит: Kokusai Keisokuki KK

A material testing machine measuring strain of a tube-like test piece, comprising: a plurality of radial direction displacement detection units; an axis direction displacement detection unit; and a calculation unit that calculates the strain, wherein: each of first and second displacement meters of at least one of the radial direction displacement detection units comprises: a needle; a fixed frame; a movable frame; and a displacement sensor having a body part and a contact protruding from the body part, and wherein a tip of the contact contacts a stopper plate; the needle is oriented in the radial direction of the test piece; the needle protrudes from an end of the movable frame; displacement in the radial direction of the test piece is detected by detecting a moving amount of the needle; and the calculation unit calculates a curvature radius in the tube axis direction of the test piece.

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Номер записи: 29

17-10-2013 дата публикации

Hybrid virtual load monitoring system and method

Номер: US20130275059A1

Автор: Alexander I. Khibnik, Andreas P.F. Bernhard, James Peter Cycon, Mark W. Davis

Принадлежит: Sikorsky Aircraft Corp

Virtual sensors can be used to monitor the loads on the system in determining damage accumulation, remaining useful life or retirement time of the components. A virtual sensor is a mathematical construct to infer a desired system measurement (e.g. a structural load) from readily available system state parameters (e.g. speed, weight, load factors, control settings, etc.). The accuracy of the virtual sensor depends upon the mapping between the desired measurement and the state parameters. A hybrid load monitoring system and method includes one or more direct or physical sensor measurements in addition to the plurality of virtual sensors. Signals from the physical sensors are included as an input (as opposed to an output) to the mapping between system state parameters and the various target sensor feature amplitudes.

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Номер записи: 30

05-12-2013 дата публикации

Method for specifying fracture resistance of mechanically stressed glass or glass ceramic

Номер: US20130319048A1

Автор: Peter Hartmann

Принадлежит: SCHOTT AG

A method for specifying the material of glass or glass ceramic components by either the minimum service life of a component as a function of a predefined mechanical stress or the mechanical resistance as a function of a predefined service life during which mechanical stress occurs. The method enables a leaner dimensioning of mechanically stressed glass and glass ceramic components.

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Номер записи: 31

26-12-2013 дата публикации

Concrete cylinder curing box and method

Номер: US20130343734A1

Автор: II Marshall Dock, Jim O'DANIEL, Michael Fox

Принадлежит: Individual

The present disclosure describes a curing box including a circulation assembly which substantially eliminates temperature stratification of a first fluid within the box. Additionally, the curing box includes an internal temperature sensor and an external temperature sensor which provide data to a control module. The control module permits adjustment of the fluid temperature within the box. The present disclosure additionally provides a method for curing a specimen in the curing box. The method compares the temperature signal from the external sensor to the internal sensor and adjusts the temperature of the fluid in the box to match the temperature reported by the external sensor. Additionally, the method controls the flow of a second fluid into the box thereby circulating the first fluid to substantially eliminate temperature stratification of the first fluid in the box. Thus, the method provides a controlled environment for curing the specimen.

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Номер записи: 32

16-01-2014 дата публикации

Method of Evaluating Friction Stir Welding Defects

Номер: US20140013821A1

Автор: Jeremy Peterson, Murray Mahoney, Raymond Rowland, Rodney Bond, Russell Steel

Принадлежит: Individual

A method of evaluating defects in a friction stir welded seam is provided, the method including: providing a welded sheet of metallic stock, the sheet having a top edge and a bottom edge, opposed side edges, and a joining seam formed between the opposed side edges by means of friction stir welding; isolating a preselected test specimen from the sheet of welded metallic stock, the specimen comprising either the top edge or the bottom edge and a test portion of the seam, with the test portion extending from an intermediate point to either the top or bottom edge and having a longitudinal axis, so that said test portion is disposed perpendicularly to the longitudinal axis, thereby establishing a test specimen face and a weld root; and detaching the specimen from the sheet and then testing the integrity of said weld root.

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Номер записи: 33

16-01-2014 дата публикации

Hardness tester and program

Номер: US20140013834A1

Автор: Fumihiko Koshimizu

Принадлежит: Mitutoyo Corp

A hardness tester having an image capturer capturing an indentation image, a data memory, an automatic size-scanning program scanning an indentation size, and a hardness calculation program includes: an identification information providing program providing image data with test specimen identification information and indentation identification information; a memory control program having the image data associated with the identification information stored; a specifying program specifying, when a scanning error occurs, identification information of image data in which the scanning error has occurred; an obtaining program obtaining the image data from the data memory based on the specified identification information; and a re-scanner (a display, an operator, and a manual size-calculation program) re-scanning an indentation size from the obtained image data.

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Номер записи: 34

27-02-2014 дата публикации

Sample Holder For Receiving a Sample

Номер: US20140053656A1

Автор: Ronald R. Gaddum

Принадлежит: Gabo Qualimeter Testanlagen GMBH

A sample holder for receiving a sample includes a sample receiving device for clamping the sample, which is assigned a holding means which has at least two prongs protruding from the sample receiving device for a gripping means. Also disclosed are a receiving device, a sample holder magazine, a sample feeding system, a clamping device and an examining device.

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Номер записи: 35

06-03-2014 дата публикации

Mount assembly for compression testing of protective articles of apparel

Номер: US20140060202A1

Автор: Jeffrey D. Allison, Jorge E. Carbo, Jr., Martine I.V. Mientjes

Принадлежит: Nike Inc

A mount assembly for compression testing of an article of apparel on a compression testing machine. The machine has a head and a sensor. The mount assembly includes a substantially rigid core member and a resilient member that is supported on and that at least partially covers the cover member. The resilient member is configured to support the article of apparel thereon. The resilient member is configured to resiliently deform in response to a compression applied to the article of apparel from the head of the impact testing machine. As such, the sensor detects an effect of the compression on at least one of the resilient member and the core member.

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Номер записи: 36

13-03-2014 дата публикации

Multiple specimen testing

Номер: US20140069203A1

Автор: Andrew J. Slifka, III, Elizabeth S. Drexler, Joseph David McColskey, Marc Dvorak

Принадлежит: National Institute of Standards and Technology (NIST)

Systems and methods are described for concurrently applying loads to multiple test specimens. The systems and methods are useful for cyclical tensile loading of specimens such as in fatigue strength evaluations. The systems and methods are also useful for low frequency cyclical loading evaluations.

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Номер записи: 37

20-03-2014 дата публикации

Method and apparatus of measuring precise high speed displacement

Номер: US20140078518A1

Автор: Jae-young Lim

Принадлежит: Hyundai Motor Co

The present invention relates to a method and apparatus for measuring precise high speed displacement, and more particularly, to a method and apparatus for measuring precise high speed displacement, which measures displacement of a test specimen by using a uniform intensity laser line and by using differences in a laser transmission amount according to the deformation of the test specimen, and measures a strain rate of the test specimen such as high strength fiber or the like using a high speed tensile test.

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Номер записи: 38

03-04-2014 дата публикации

Methods for testing structures, and selection methods using these

Номер: US20140090447A1

Автор: Balu S. Uphade, Hwaili Soo, John R. Mayer, Lester K. CANTU, Remi A. Trottier, Sasanka RAHA

Принадлежит: DOW TECHNOLOGY INVESTMENTS LLC

Test method for structures, e.g., such as carriers and/or catalysts. The methods may be used to select the carriers and/or catalysts for future use. Carriers and catalysts so selected, and processes making use of these, are also provided.

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Номер записи: 39

03-04-2014 дата публикации

Method and System for Evaluating Creep Damage of High Temperature Component

Номер: US20140092934A1

Автор: Kenji YASHIRODAI, Nobuhiro Isobe

Принадлежит: HITACHI LTD

Disclosed is a method of evaluating creep damage of a high temperature component which assesses the degree of creep damage of a high temperature component for use under a high temperature environment. In the method of evaluating creep damage of a high temperature component, temporal change in damage parameter of the high temperature component under an uniaxial condition and temporal change in multiaxiality of the high temperature component are obtained, and the temporal change in damage parameter is corrected by the temporal change in multiaxiality to assess the degree of creep damage of the high temperature component.

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Номер записи: 40

04-01-2018 дата публикации

An Impact Compactor, Compaction System and a Method of Obtaining Soil Strength

Номер: US20180002882A1

Автор: Stromsoe Roger Arnold

Принадлежит:

The invention relates to an impact compactor () and to a method and system of obtaining an indication of the soil strength of soil () by using an impact compactor (). The impact compactor () includes a chassis structure (), at least one wheel () supportively mounted on the chassis structure (), and at least one impact drum () which is displaceable relative to the chassis structure (). The method includes travelling with the impact compactor () over a soil surface () while the drum () is in a raised position in which it is spaced from the soil surface () and measuring, by using a measuring arrangement () which is connected to or forms part of the impact compactor (), a rut depth () of a rut in the soil surface () which is formed by the wheel () as the impact compactor () travels over the soil surface (). 145-. (canceled)46. A method of obtaining an indication of the soil strength of soil by using an impact compactor , wherein the impact compactor includes a chassis structure , at least one wheel supportively mounted on the chassis structure , and at least one impact drum which is displaceable relative to the chassis structure , the method including:travelling with the impact compactor over a soil surface while the drum is in a raised position in which it is spaced from the soil surface; andmeasuring, by using a measuring arrangement which is connected to or forms part of the impact compactor, a rut depth of a rut in the soil surface which is formed by the wheel as the impact compactor travels over the soil surface.47. The method of claim 46 , which includes measuring the rut depth by determining the distance between a specific position on the impact compactor and a target point on the soil surface claim 46 , by using the measuring arrangement.48. The method of claim 47 , wherein the specific position is on the chassis structure.49. The method of claim 47 , wherein the specific position is on a structure which is fixed/secured to the chassis structure.50. The method ...

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Номер записи: 41

05-01-2017 дата публикации

Instrument for measuring the intrinsic strength of polymeric materials via cutting

Номер: US20170003207A1

Автор: William V. MARS

Принадлежит: ENDURICA LLC

A testing instrument and method for measuring the intrinsic strength of polymeric materials via cutting includes a pair of mechanical clamps connected at a base to low-friction hinges. The clamps are configured to secure the elongate edges of a polymer specimen, and to periodically load the specimen to a predetermined strain. The load on the specimen while strained is measured with an opening force load sensor. While in the strained condition, the specimen is cut with a highly sharpened blade, and the cutting force also measured by a cutting force load sensor. A cutting energy curve may be plotted from these measurements, from which a cutting energy can further be derived. The cutting energy is compared to a control material with a known cutting energy and intrinsic strength. The cutting energy and intrinsic strength being linearly proportional, the cutting energy for the specimen may thereby be determined.

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Номер записи: 42

05-01-2017 дата публикации

System and methods for estimation of mechanical properties and size of light-scattering particles in materials

Номер: US20170003271A1

Автор: Seemantinin K. Nadkarmi, Zelnab Hajjarian

Принадлежит: General Hospital Corp

System and method for determining a viscoelastic modulus of a sample with the use of optical data and an average size of light-scattering particles, of such sample, that has been derived from the optical data in reliance of angular dependence of a radiant flux profile determined from laser speckles formed by the sample and, in required, on a refractive index mismatch between light-scattering particles and sample medium hosting such particles. The determination is optionally carried out by taking into account at least one of absorption coefficient and reduced scattering coefficient of the sample, which are also determined from the same optical data. Laser speckle may be formed for different combinations of polarization states of sample-illuminating light and detected light and/or different wavelengths to account for polydisperse nature of the sample.

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Номер записи: 43

05-01-2017 дата публикации

Method, system, and device for automating transfer of tape to microtome sections

Номер: US20170003309A1

Автор: Alexander S. Tolpygo, Partha P. Mitra, Robert L. Kleinberg

Принадлежит: Clarapath Inc

A system and method for automated transfer of a tape segment onto the face of a tissue block to be thin sectioned by microtomy includes applying, to a carrier strip, a plurality of serially-spaced patches of sample tape having an adhesive outer surface, transporting the carrier strip along a path adjacent to and spaced from the exposed sample surface to position one of the patches of sample tape adjacent to and covering the exposed sample surface, adhering the one of the patches of sample tape to the exposed sample surface.

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Номер записи: 44

07-01-2016 дата публикации

HEAVY DYNAMIC PENETROMETER AND METHOD FOR DETERMINING THE FALL HEIGHT OF A HAMMER BELONGING TO SUCH A PENETROMETER

Номер: US20160003724A1

Автор: BENZ NAVARRETE Miguel, GOURVES Roland

Принадлежит:

The penetrometer includes a chassis, a mast mounted thereon and positioned substantially vertically during a test, a rod string, including a tip penetrating the ground that is positioned at one end of the rod string, an anvil that bears against the rod string at an end opposite the tip, a hammer striking the anvil, elements for raising the hammer along the mast up to a fall height, at which the hammer is released, and elements for measuring the sinking of the tip into the ground. The penetrometer further includes an electronic control unit for controlling the fall height, and configured to select the fall height adopted for the test based on the sinking of the tip measured by the measuring elements during one or more earlier tests, and mechanical elements controlled by the control unit for triggering the fall of the hammer at the height selected by the control unit. 1. A heavy dynamic penetrometer , comprising:a chassis,a mast, mounted on the chassis and positioned to be substantially vertical during a test,a rod string, including a tip for penetrating the ground, which is positioned at one end of the rod string,an anvil, which bears against the rod string, at an end opposite the tip,a hammer for striking the anvil,means for raising the hammer along the mast up to a fall height, at which the hammer is released,means for measuring the sinking of the tip into the ground,an electronic control unit for controlling the fall height of the hammer, which is configured to select, from among several predetermined values, the fall height to be adopted for the test based on the sinking of the tip measured by the measuring means during one or more earlier tests, andmechanical triggering means for triggering the fall of the hammer, which are controlled by the electronic unit so that the hammer is released at the selected height of the electronic control unit.2. The dynamic penetrometer according to claim 1 , wherein the means for raising the hammer comprise a support stop for the ...

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Номер записи: 45

07-01-2016 дата публикации

METHOD FOR DETECTING TEMPORALLY VARYING THERMOMECHANICAL STRESSES AND/OR STRESS GRADIENTS OVER THE WALL THICKNESS OF METAL BODIES

Номер: US20160003780A1

Автор: Altpeter Iris, BERGHOLZ Steffen, Dobmann Gerd, Herrmann Hans-Georg, Hübschen Gerhard, Kurz Jochen, RUDOLPH Jürgen, TSCHUNCKY Ralf

Принадлежит:

The present invention relates to a method for detecting temporally varying thermomechanical stresses and/or stress gradients over the wall thickness of metal bodies, in particular pipelines. In the method, the temperature on the outer surface of the body is measured in order to determine a temperature progression and stress progression therefrom. In addition, electromagnetic ultrasonic transducers are used at at least one measuring point on the outer surface in order to determine the progression of the stresses and/or stress gradients over time over the wall thickness of the body in conjunction with the result of the temperature measurement. The method allows the fatigue monitoring of pipelines even in the event of rapid stress changes. 1. A method for detecting temporally varying thermomechanical stresses and/or stress gradients over the wall thickness of metal bodies , in particular pipelines , in which a temperature is measured at at least one measurement point on an outer surface of the body and additional measurements are carried out using electromagnetic ultrasound transducers in the region of the measurement point to determine the stresses and/or stress gradients over the wall thickness of the body via the measured temperature from the additional measurements ,wherein a temperature curve between an inner surface and the outer surface is ascertained from the measured temperature and is used for the determination of the stresses and/or stress gradients over the wall thickness of the body from the additional measurements.2. The method as claimed in claim 1 ,characterized in that ultrasound runtime, amplitude, and/or eddy current impedance measurements are carried out using the electromagnetic ultrasound transducers, wherein the stresses and/or stress gradients are determined by analyzing the ultrasound runtime, amplitude, and/or eddy current impedance measurements in conjunction with the measured temperature or the ascertained temperature curve.3. The method as ...

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Номер записи: 46

03-01-2019 дата публикации

Apparatus for bi-directional load testing of driven piles and injection piles, and method thereof

Номер: US20190003146A1

Автор: Yee Kong Wai

Принадлежит: Will And Well Property Sdn Bhd

An apparatus for carrying out bi-directional load testing of close ended driven piles and injection piles utilizing a hydraulic jack, comprising an enclosure for housing the hydraulic jack. The apparatus includes a first hollow body, a second hollow body and a third hollow body. The first hollow body has an open upper end, an open lower end, and a base for attaching the top of the hydraulic jack. The second hollow body has an open upper end, an open lower end, and a base for attaching the base of the hydraulic jack. The third hollow body has an open upper end and an open lower end, and has an inner diameter corresponding to the outer diameter of the first hollow body and the second hollow body, the third hollow body being capable of being axially received by both the first hollow body and the second hollow body.

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Номер записи: 47

07-01-2021 дата публикации

METHOD FOR IDENTIFYING A MEDIUM STRUCTURE COUPLING AND A FRACTURE NETWORK MORPHOLOGY OF A SHALE GAS RESERVOIR

Номер: US20210003005A1

Автор: Chen Zhen, Liu Wenchao, Liu Yunfeng, MA Dongxu, Qi Qian, SONG Zhiyong, YUE Ming, ZHU Weiyao

Принадлежит: University of Science and Technology Beijing

A method for identifying a medium structure coupling and a fracture network morphology of a shale gas reservoir includes the following steps. Firstly, performing a fracturing test on shale cores by using a modified Brazilian disc test and categorizing the fracture network morphology. Secondly, performing a shale matrix-fracture structure and stress sensitivity test on the shale cores having different fracture network morphology. After that, determining a stress sensitivity constant of different fracture network morphology according to indoor core data and finally preparing an identification chart of the fracture network morphology based on an indoor core stress sensitivity text combined with a production practice. The identification chart can be applied to an actual fracturing well, and the fracture network morphology is directly identified by a real-time effective stress and a normalized flow. 1. A method for identifying a medium structure coupling and a fracture network morphology of a shale gas reservoir , comprising the following steps:(1) categorizing the fracture network morphology: performing a fracturing test on shale cores by using a modified Brazilian disc test, categorizing the fracture network morphology as a tree-like fracture network, a feather-like fracture network, a tufted fracture network, and a meshed fracture network;(2) performing a shale matrix-fracture structure and stress sensitivity test: selecting the shale cores having different fracture network morphology in the step (1), performing the shale matrix-fracture structure and stress sensitivity test on the shale cores by a core displacement experiment, recording parameters of permeability and effective stress of the shale core;(3) determining a stress sensitivity constant of different fracture network morphology: according to the parameters of the permeability and the effective stress of the shale cores having the different fracture morphology in the step (2) under different stress conditions ...

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Номер записи: 48

04-01-2018 дата публикации

STRESS-STRAIN TESTING SYSTEM FOR LARGE-DIAMETER STEEL PIPE PILE OF OFFSHORE WIND TURBINE AND CONSTRUCTION METHOD

Номер: US20180003586A1

Автор: Di Shengjie, Du Wenbo, Shan Zhigang, Sun Miaojun, Wang Mingyuan

Принадлежит:

The present invention relates to a stress-strain testing system for a large-diameter steel pipe pile of an offshore wind turbine and a construction method, comprising a steel pipe pile, wherein copper belt type sensor cables are correspondingly welded on both sides of the steel pipe pile along an axis direction; each sensor cable is sequentially covered with an epoxy adhesive, gold foil paper and an angle steel welded on the steel pipe pile centering on the copper belt type sensor cable; a fiber core of each copper belt type sensor cable is transferred into a high-strength armored optical cable by a special fixture and then is led out; and the high-strength armored optical cable is connected with a Brillouin optical fiber demodulator. The present invention is applicable to the field of foundation engineering testing and detection technology. 11215672443. A stress-strain testing system for a large-diameter steel pipe pile of an offshore wind turbine , having a steel pipe pile () , wherein copper belt type sensor cables () are correspondingly welded on both sides of the steel pipe pile () along an axis direction; each sensor cable is sequentially covered with an epoxy adhesive () , gold foil paper () and an angle steel () welded on the steel pipe pile (I) by using the copper belt type sensor cable as a center; a fiber core in each copper belt type sensor cable () is transferred into a high-strength armored optical cable () with a special fixture and then is led out; and the high-strength armored optical cable () is connected with a Brillouin optical fiber demodulator ().2. A construction method of the stress-strain testing system for the large-diameter steel pipe pile of the offshore wind turbine of claim 1 , comprising the following steps:{'b': 2', '1', '1, 'a. marking lines for laying copper belt type sensor cables () on both sides of a steel pipe pile () along an axis direction, polishing a surface of the steel pipe pile () along the lines and cleaning dust;'}{'b': ...

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Номер записи: 49

04-01-2018 дата публикации

Thermomechanical testing of shear cutters

Номер: US20180003603A1

Автор: Federico Bellin

Принадлежит: Varel International Industries LP

A method for testing thermal fatigue resistance of a shear cutter includes: engaging the shear cutter with a rotating target cylinder; moving the shear cutter along the rotating target cylinder until the shear cutter is heated to a threshold temperature; cooling the shear cutter in response to heating of the shear cutter to the threshold temperature; and repeating the heating and cooling of the shear cutter.

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Номер записи: 50

04-01-2018 дата публикации

PEELING TEST DEVICE

Номер: US20180003616A1

Автор: Berranger Thibault, BROSSIER Pascal Noel, CHICHERY Emmanuel, GANI Lea, Timon Alain

Принадлежит: SAFRAN AIRCRAFT ENGINES

A device and a method for peeling tests, in order to test the peeling resistance of coupons each formed of a support and an adhesive. The device comprises: (i) a frame comprising rollers with parallel axes designed to maintain the coupon supported while guiding movement of the latter, (ii) a traction device comprising a vertical jack linked to an attachment element comprising a loop configured in order to cause detachment of the adhesive from the surface of the support, (iii) a device for measuring the force exerted by the jack in order to pull the loop during peeling, and (iv) a coupon, complex in shape, such as one derived from a reinforced vane. At least one roller is translationally adjustable in relation to other rollers and the coupon is specially prepared in order to facilitate carrying out the tests. 2. (canceled)3. Peeling test device according to claim 1 , wherein the means of attachment comprise a cable designed to engage around the adhesive of the coupon.4. Peeling test device according claim 1 , wherein the front roller is translationally adjustable in relation to the frame in a direction parallel to the pulling axis and one of the guide rollers is translationally adjustable in relation to the frame in a direction perpendicular to the pulling axis.5. Peeling test device according to claim 4 , wherein the pulling axis is fixed in relation to the frame and the front roller is only translationally adjustable in relation to the frame in a direction parallel to the pulling direction.6. Peeling test device according to claim 1 , wherein the front roller has a cylindrical surface.7. Peeling test device according to claim 1 , further comprising a peeling test coupon derived from a vane and comprisingsaid portion of blade of the vane that comprises a frontside surface, a backside surface and a leading edge and/or trailing edge andthe adhesive which forms a vane reinforcement that covers and is glued to at least a part of the frontside surface, a part of the ...

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Номер записи: 51

02-01-2020 дата публикации

METHOD FOR DETERMINING PHYSICAL SIMILARITY SIMULATION MATERIAL OF SOLID BACKFILL BODY

Номер: US20200003667A1

Автор: CHEN Yadong, HAN Xiaole, LAN Lixin, Tai Yang, ZHANG Jixiong, ZHANG QIANG

Принадлежит:

A method for determining a physical similarity simulation material of a solid backfill body is provided. A compaction test is run on a gangue backfill body in a lab, to obtain a ε-σ curve regarding the gangue backfill body in the compaction process. Backfill blocks are made by using a thin wood board, sponge, and a paper sheet in different proportions, and then an unconfined compression test is separately run on the backfill blocks used for physical similarity simulation, to obtain ε-σcurves regarding the backfill blocks in the compression process. A sum of squared errors Σ(ε−ε)is introduced to separately calculate a sum of squared errors of the backfill block and that of the gangue backfill body, and accordingly an error between ε-σ curves regarding the test block and the gangue backfill body is determined. Finally, a backfill block for which the sum of squared errors is less than 0.5 is determined as a physical similarity simulation material of the gangue backfill body. By fabrication and selection of similar materials, the present invention can reduce an error caused by a selected backfilling material during a physical similarity simulation experiment, guaranteeing the accuracy of the physical similarity simulation experiment for solid backfill mining. 1. A method for designing a backfill-mining mass ratio in solid backfill mining , comprising the following steps:{'sub': 0', '0, 'running a compaction test on a gangue backfill body by using a servo testing machine, recording values of stress σ and strain ε in a loading process, and drawing a ε-σcurve 1 regarding the gangue backfill body in compaction process as a reference curve;'}{'sub': '1', 'setting an excavation height of a physical similarity model to h, and an excavation step to s, to obtain a height of a backfill block h=h/n, wherein coefficient n is a real number not less than 1, the height of the backfill block is less than or equal to the excavation height of the model;'}designing dimensions of the ...

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Номер записи: 52

07-01-2021 дата публикации

X-RAY STRESS MEASUREMENT DEVICE

Номер: US20210003462A1

Автор: KOYANAGI Kazuo, Okamoto Yasuyuki

Принадлежит: SHIMADZU CORPORATION

An X-ray generator irradiates with an X-ray beam onto a polycrystalline sample on a sample stage . An X-ray detector including an array of X-ray detecting elements detects the intensities of diffracted X-rays which occur from the X-ray beam incident on the sample. A rotary drive rotates the X-ray generator, X-ray detector and sample-holding section so as to maintain a predetermined relationship between the angle formed by the sample surface and the incident X-ray beam, and the angle formed by the sample surface and the diffracted X-ray travelling toward the X-ray detector. A stress measurement section rotates, for a measurement of a stress value of the sample, either the X-ray generator and the X-ray detector or the sample stage so as to change the angle formed by the sample surface and the incident X-ray beam, while maintaining the positional relationship of the X-ray generator and the X-ray detector. 1. An X-ray stress measurement device configured to measure a stress in a sample made of a polycrystal by utilizing a diffraction phenomenon which occurs when an X-ray beam is irradiated onto the sample , the device comprising:a sample-holding section;an X-ray irradiating section configured to irradiate with an X-ray beam onto a sample held in the sample-holding section;an X-ray detector section including a plurality of X-ray detecting elements one-dimensionally arrayed in a predetermined direction, the X-ray detector section configured to detect intensities of diffracted X-rays which are a radiation of X-rays diffracted from the sample within a predetermined angular range when the X-ray beam is irradiated from the X-ray irradiating section onto the sample;a rotary drive section configured to individually rotate the X-ray irradiating section, the X-ray detector section and the sample-holding section so as to maintain a predetermined relationship between an angle formed by a surface of the sample held in the sample-holding section and the X-ray beam incident on the ...

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Номер записи: 53

07-01-2021 дата публикации

Split-type device for measuring rock mass deformation under high hydraulic pressure and construction method and use thereof

Номер: US20210003489A1

Автор: Aiqing WU, Chong Chen, Kun Wu, Lei Fan, Meiwan YU, QIAN Xiang, Qixiang FAN, WEI Hu, Xiaoyu HAN, Yihu ZHANG, Yuankun LIU, Zhiquan KE, Zuowu ZHONG

Принадлежит: Changjiang River Scientific Research Institute Changjiang Water Resources Commission

A split-type device for measuring rock mass deformation under high hydraulic pressure and a construction method and use thereof. Main components of the device include a metal measuring rod, a magnetic iron core, a shell, a waterproof coil framework, a coil, a tail accessory, a cable clamp, a cable, a signal processing bin, etc. Main electronic components are treated by adopting the all-metal shell and a vacuum particle sealing double-layer sealing process, and have hydraulic pressure resistance of 5 MPa or above. Measurement signals feature centralized processing, digitization and dual utilization of signals, i.e., after data of a plurality of sensors is processed in an electronic bin and then digitized signals are connected to an independent reader outside the bin or a centralized acquisition device for in-situ tests.

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Номер записи: 54

07-01-2021 дата публикации

DEVICE AND METHOD FOR ANCHOR BOLT (CABLE) SUPPORTING STRUCTURE TEST AND ANCHORING SYSTEM PERFORMANCE COMPREHENSIVE EXPERIMENT

Номер: US20210003490A1

Автор: JIA Jinglong, Li Chunlin, LI Xiaoliang, TAN Yunliang, Wang Zhi, XING Minglu, YU Fenghai, Zhao Chen, ZHAO Tongbin

Принадлежит:

The present disclosure provides a device and a method for an anchor bolt (cable) supporting structure test and an anchoring system performance comprehensive experiment, and relates to the technical field of anchoring tests. The device includes a gantry, a loading mechanism, a test mechanism and a test piece, wherein the gantry includes a base and an operation platform; the loading mechanism includes a loading frame, a chuck, a surrounding rock force loading oil cylinder and a hollow drawing oil cylinder; the test mechanism includes a load, a displacement and an acoustic emission and other monitoring mechanisms, and the test piece includes a rock test piece, an anchor bolt (cable), an anchor net, and the like; the loading mechanism and the hollow drawing oil cylinder are disposed on the base, and a torsion motor and an anchor bolt drill are disposed on the operation platform, wherein the rock test piece is placed between bearing plates, one end of the anchor bolt (cable) is fixed by the chuck or anchored into the rock test piece, and the other end of the anchor bolt (cable) passes through the hollow drawing oil cylinder. The device is capable of not only testing mechanical properties of the anchor bolt (cable) and an anchoring member, but also realizing simulation of a stress environment of “five sides loaded and one side non-loaded” so as to perform a surrounding rock drilling response or anchoring system performance comprehensive experiment. 2. The device according to claim 1 , wherein the through-groove is disposed at an upper surface of the base claim 1 , and a depth of the through-groove is greater than an exposed length of the installed loading oil cylinder; the operation platform is disposed opposite to the base claim 1 , a sliding rail is disposed at an upper surface of the operation platform claim 1 , a sliding block moves along the sliding rail in cooperation with the sliding rail claim 1 , a sliding groove is further disposed at an upper surface of the ...

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Номер записи: 55

03-01-2019 дата публикации

Test device of universal nail/screw holding power

Номер: US20190003926A1

Автор: Feibin Wang, Hongyi Lu, Qicheng Teng, Weizhen Cai, Xiaolin Yang, Zeli Que, Zherui Li

Принадлежит: NANJING FORESTRY UNIVERSITY, ZHENGZHOU UNIVERSITY

A test device of universal nail/screw holding power is provided. The device is capable of penetrating a nail/screw into a test piece at any angle and positioning the test piece on which a nail/screw is penetrated at any angle to test the nail/screw holding power. The device includes a base, two opposite supporting plates, two coaxial disks, an upper bearing plate, a lower bearing plate, a side bearing plate, a through groove, a trapezoid slot, and a plurality of trapezoid bolts on the same circumference. When the disk is turned, at least one trapezoid bolt is stretch into the trapezoid slot; when the at least one trapezoid bolt engages with the trapezoid slot and then is tightened up, the at least one trapezoid bolt and the trapezoid slot cooperatively limit the turn of the disk.

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Номер записи: 56

03-01-2019 дата публикации

DEVICES AND METHODS FOR TENSION MEASUREMENTS AND APPLICATIONS OF SAME

Номер: US20190003941A1

Автор: Davidson Jeffrey M., Koch Stephen R., Samson Philip C., Sidorov Veniamin Yu, Wikswo John P.

Принадлежит:

A device for measuring a tension of a bio-object construct as it is being stretched that includes a microscope, a holding member for accommodating the bio-object, and a probe. The microscope includes a condenser, an objective and a stage positioned therebetween. The stage is movable along a horizontal plane. The holding member is fixable on the stage. The probe has a first end attached to the condenser, and a second end placed in the holding member. The stage operably moves such that the bio-object construct moves toward the second end of the probe and contacts with the second end of the probe, thereby causing a displacement of the second end of the probe and a displacement of the bio-object construct, which are used to measure the tension of the bio-object construct. 1. A device for measuring a tension of a bio-object construct , comprising:a microscope comprising a condenser, an objective and a stage positioned therebetween, wherein the stage is movable along a horizontal plane;a holding member for accommodating the bio-object construct, fixable on the stage; anda probe having a first end attached to the condenser, and a second end placed in the holding member,wherein the stage operably moves such that the bio-object construct moves toward and contacts with the second end of the probe, thereby causing a displacement of the second end of the probe and a displacement of the bio-object construct, which are used to measure the tension of the bio-object construct.2. The device of claim 1 , wherein the bio-object construct has two ends fixed in the holding member.3. The device of claim 1 , wherein the bio-object construct comprises a connective tissue construct claim 1 , a cardiac tissue construct claim 1 , a bone construct claim 1 , or a deformable material.4. The device of claim 1 , further comprising:a detector coupled to the microscope for determining the displacement of the second end of the probe and the displacement of the bio-object construct.5. The device of ...

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Номер записи: 57

03-01-2019 дата публикации

MOBILE BIPENDULUM IMPACT TEST MACHINE

Номер: US20190003942A1

Автор: HOWIE Kevin Thomas

Принадлежит: Bell Helicopter Textron Inc.

A bipendulum impact test machine for imparting impact damage includes a frame of beams where a weighted sled swings from a pair of links extending from a carriage. The carriage and sled are vertically adjustable along a set of vertical shafts of the frame. The sled is permanently horizontally oriented and parallel with the carriage. Interchangeable impact tips are removably and adjustably engaged with the sled. The impact tips have a variety of shapes in order to simulate different impact scenarios. The device is mobile and capable of imparting impact damage to large aircraft parts even in an installed condition. 1. A mobile impact test machine comprising:a frame;a set of parallel and coplanar vertical shafts connected to the frame;a threaded rod operatively engaged with the frame;a carriage, supported by the threaded rod, and slidingly engaged with the set of vertical shafts;a first link pivotally engaged with the carriage and pivotally engaged with a sled;a second link, parallel with the first link, pivotally engaged with the carriage and pivotally engaged with the sled; andan impact tip removably attached to the sled.2. The mobile impact test machine of claim 1 , wherein rotation of the threaded rod adjusts a vertical position of the sled relative to the frame.3. The mobile impact test machine of claim 1 , wherein rotation of the impact tip adjusts a horizontal position of the impact tip relative to the sled.4. The mobile impact test machine of claim 1 , comprising a winch mounted to the frame and releasably connected to the sled.5. The mobile impact test machine of claim 1 , comprising a set of linear sleeve bearings mounted to the carriage and slidingly engaged with the set of vertical shafts.6. The mobile impact test machine of claim 1 , comprising:a set of linear sleeve bearings mounted to the carriage and slidingly engaged with the set of vertical shafts;a set of clamp-on collars adjacent the set of linear sleeve bearings; andwherein when the set of clamp-on ...

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Номер записи: 58

03-01-2019 дата публикации

FLOOR JOIST

Номер: US20190003943A1

Автор: King Randy

Принадлежит: Mid-Columbia Lumber

A floor joist including a first piece of lumber including a first set of fingers and a first set of grooves is provided. A second piece of lumber including a second set of fingers and a second set of grooves is also provided. A finger joint is formed by a combination of the first second of fingers with the second set of grooves and a combination of the second set of fingers with the first set of grooves. A first set of pockets are formed between the combination of the first second of fingers with the second set of grooves, and a second set of pockets are formed between the combination of the second set of fingers with the first set of grooves. 1. A floor joist comprising:a first piece of lumber including a first set of fingers and a first set of grooves;a second piece of lumber including a second set of fingers and a second set of grooves; anda finger joint formed by a combination of the first set of fingers with the second set of grooves and a combination of the second set of fingers with the first set of grooves,wherein a first set of pockets are formed between the combination of the first second of fingers with the second set of grooves, andwherein a second set of pockets are formed between the combination of the second set of fingers with the first set of grooves.2. The floor joist according to claim 1 , wherein the first set of pockets and the second set of pockets contain an adhesive.3. The floor joist according to claim 2 , wherein the adhesive is a heat resistance adhesive.4. The floor joist according to claim 1 , wherein the pockets span an entire width of the first piece of lumber and the second piece of lumber.5. A method of manufacturing a floor joist claim 1 , the method comprising:performing an optical inspection of a package of lumber;separating the package of lumber into three groups of lumber based on engineering grade;performing a mechanical inspection of each of the three groups of lumber;sorting each piece of lumber of the three groups of lumber ...

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Номер записи: 59

03-01-2019 дата публикации

ACCELERATED PAVEMENT TESTING

Номер: US20190003945A1

Автор: De Beer Morris, Rust Frederick Christoffel

Принадлежит:

A method of testing pavement includes repeatedly simulating wheel loading on the pavement by repeatedly applying a plurality of discreet forces with a downwards component, in series and one after the other, to an upper surface of a test strip of the pavement thereby to simulate a load exerted by a travelling wheel and hence subjecting the pavement to accelerated testing. Also provided is an accelerated pavement testing device () which includes a carrier () and an array of actuators () carried by the carrier () and configured each rapidly and repeatedly to apply a discrete force with a downwards component to an upper surface of a test strip of pavement. Each actuator () is associated with at least one force transfer element or sole () configured in use to transfer said discreet force from the actuator () to pavement being tested thereby to simulate a load exerted by a travelling wheel to the test strip of pavement and hence to subject the pavement to accelerated testing. 1. A method of testing pavement , the method includingrepeatedly simulating wheel loading on the pavement by repeatedly applying a series of discreet forces with a downwards component, one after the other, to an upper surface of a test strip of the pavement thereby to simulate a load exerted by a travelling wheel and hence subjecting the pavement to accelerated testing, the discreet forces being provided by repeatedly actuating a series of actuators, one after the other, each to exert a force with a downwards component to the upper surface of the test strip of pavement, or to a portion thereof.2. The method of claim 1 , in which the series of discreet forces is a linear series or array and the test strip of pavement being subjected to the series of discrete forces is a linear strip of pavement.3. The method of claim 1 , in which the discreet forces are vertical forces.4. The method of claim 1 , in which the discreet forces are each exerted by a rectangular in outline force transfer element or sole ...

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Номер записи: 60

03-01-2019 дата публикации

NANO-LEVEL EVALUATION OF KEROGEN-RICH RESERVOIR ROCK

Номер: US20190003992A1

Автор: Abousleiman Younane N., Hull Katherine Leigh

Принадлежит:

Nano-level evaluation of kerogen-rich reservoir rock is described. A nano-scale beam is formed from kerogen-rich reservoir rock. The nano-scale beam includes reservoir rock and kerogen having polymeric properties. A mechanical experiment is performed on the nano-scale beam. The mechanical experiment is imaged using a scanning electron microscope (SEM) or a transmission electron microscope (TEM). A material parameter of the kerogen in the nano-scale beam is determined based on the mechanical experiment and images obtained responsive to the imaging. 1. A method comprising:forming a beam from a cement mixture comprising cement and a polymer, wherein a maximum dimension of the beam is at most 1000 micrometer (μm);performing a mechanical experiment on the beam, wherein the mechanical experiment comprises a tension test or a compression test;imaging the mechanical experiment using a scanning electron microscope (SEM) or a transmission electron microscope (TEM); anddetermining a material parameter of the polymer in the beam based on results of the mechanical experiment and images obtained responsive to the imaging;before forming the beam, treating the cement mixture with an organic additive configured to alter properties of the polymer in the cement mixture; anddetermining an effect of organic additive on the polymer in the mixture based on the material parameter of the polymer in the beam.2. The method of claim 1 , wherein the mechanical experiment is the tension test claim 1 , and wherein the material parameter of the polymer in the beam comprises a tensile strength of the beam.3. The method of claim 1 , wherein the tension test is a cantilever test claim 1 , wherein performing the cantilever test comprises applying a force of the order of micro-Newtons on a free-end of the beam claim 1 , wherein determining the material parameter comprises measuring a bending of the cantilever responsive to force.4. The method of claim 1 , wherein the maximum dimension of the beam is at ...

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Номер записи: 61

08-01-2015 дата публикации

METHOD AND APPARATUS FOR TESTING LOAD-BEARING CAPACITY

Номер: US20150007637A1

Автор: HAYES JOHN A., RYAN WILLIAM G., YANKOPOLUS NICHOLAS K.

Принадлежит:

In an embodiment, a hydraulic jack is provided having a first portion and a second portion. The first portion attached to a first section of a structure and the second portion attached to a second section of the structure. When a pressurized fluid is forced between the first portion and the second portion, a load is transferred to the first section and the second section by the pressure of the fluid on the first portion and the second portion. The first section and the second section are forced apart by the load, thus creating or enlarging at least one void in the structure. The pressurized fluid fills or partially fills one or more of the at least one void, thereby increasing the surface area effectively normal to the direction of the load in contact with the pressurized fluid. 1. A method of applying a load to a pile , comprising:locating a top portion below a top section of a pile, wherein the top portion is attached to the top section of the pile;locating a bottom portion below and proximate the top portion and above a bottom section of the pile, wherein the bottom portion is attached to the bottom section of the pile, wherein at least a portion of the cross-section of the top portion and at least a portion of the cross-section of the bottom portion is open, and wherein the top section of the pile and the bottom section of the pile are contiguous through the open portion of the cross-section of the top portion and the open portion of the cross-section of the bottom portion;injecting a fluid between the top portion and the bottom portion, such that the top portion and the bottom portion are pushed apart, the top portion pushes up on the top section of the pile, the bottom portion pushes down on the bottom section of the pile, and at least one void is created between the top section of the pile and the bottom section of the pile in a portion of the pile extending through the open portion of the cross-section of the top portion and the open portion of the cross- ...

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Номер записи: 62

08-01-2015 дата публикации

Measuring head intended to be fitted to a dynamic penetrometer and method of measurement using such a measuring head

Номер: US20150007640A1

Автор: Miguel Benz Navarrete, Roland Gourves

Принадлежит: Sol Solution SAS

A measuring head, intended to be fitted to a dynamic penetrometer, and attached to a drill string provided with a tip, includes a driving head intended to receive an impact to be transmitted, via the rest of the measuring head, to the drill string; and a central rod for transmitting the impact from the driving head to the drill string, the central rod having a first end turned towards the driving head, and a second end opposite the first end, and suitable for engaging with the drill string, the central rod being provided with at least one deformation sensor. It includes at least one absorption member interposed between an impact receiving end portion of the driving head and the second end of the central rod and which is suitable for filtering the wave transmitted to the drill string when the end portion of the driving head receives an impact.

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Номер записи: 63

08-01-2015 дата публикации

Test piece, test method, wind turbine generator system

Номер: US20150007667A1

Автор: HESSE Ingo

Принадлежит:

The invention relates to a test piece for determining a specific material property of a fiber-reinforced plastic composite under applied mechanical loading. 1. A test piece for determining a specific material property of a fiber-reinforced plastic composite under applied mechanical loading , the test piece comprisingan inner core incorporated in a composite with the fiber-reinforced plastic composite, the inner core being widened in a transverse axis in relation to the applied mechanical load in such a way that the composite with the inner core has a greater buckling stability than the composite without the inner core, and wherein the inner core is formed in such a way that an influence on the specific material property to be determined of the fiber-reinforced plastic composite lies in a range of acceptance.2. The test piece as claimed in claim 1 , wherein the inner core forming an inner layer of a layer system.3. The test piece as claimed in claim 1 , wherein the inner core comprising an expanded plastic with filler material.4. The test piece as claimed in claim 1 , wherein the test piece can be described by a substantially rectangular claim 1 , elongate geometry and has outer dimensions of at least 0.5 cm in thickness claim 1 , at least 2 cm in width and at least 20 cm in length.5. The test piece as claimed in further comprising ends tapering to a surface area and adapted to fit into a fixing device.6. The test piece as claimed in claim 1 , further comprising an outer surface and at least one strain gage located on the outer surface.7. The test piece as claimed in claim 1 , wherein mechanical loads are applied to the test piece corresponding to at least one of tensile loading and compressive loading.8. The test piece as claimed in claim 7 , wherein the mechanical loads corresponding to dynamic loading.9. A method of testing a test piece as claimed in claim 1 , the method comprising:clamping a first end of the test piece in a first fixing device of a test stand; ...

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Номер записи: 64

20-01-2022 дата публикации

ELECTRONICS BENDING FIXTURE DESIGN

Номер: US20220018746A1

Автор: Liu Weifeng, Shangguan Dongkai, Tan Jesus A., Uy William L.

Принадлежит:

Methods, devices, and systems for testing the flexibility of a sample such as an electronic device are provided herein. A testing system can have a motor operably connected to a mandrel such that the motor causes the mandrel to accurately and precisely rotate and cause the sample to conform to an outer surface of the mandrel. Moreover, a proximal end of the sample is secured to the outer surface of the mandrel, and the opposing distal end is controlled by a retractable holder such that the entire sample is subjected to a constant bend radius as the mandrel rotates. Other aspects and features such as controlling the environment around the mandrel and securing small samples to the mandrel are also described herein. 1. A testing system for a flexible sample , comprising:a motor that rotates a mandrel in a first direction about a longitudinal axis and in an opposing second direction, wherein a first portion of the mandrel has a first radius from the longitudinal axis to an outer surface of the mandrel, and a second portion of the mandrel has a second radius from the longitudinal axis to the outer surface of the mandrel, wherein the second radius is distinct from the first radius;a sample holder positioned on an outer surface of the mandrel, wherein the sample holder is configured to secure a sample to the first portion of the mandrel; anda retractable holder having a distal end that is biased toward the first portion of the mandrel such that the distal end contacts the sample with a predetermined force, wherein the retractable holder is configured to conform the sample to the outer surface of the mandrel as the mandrel rotates.2. The testing system of claim 1 , further comprising:a sample carrier extending between a first end and a second end, wherein the sample holder secures the first end of the sample carrier to the first portion of the mandrel; anda first flexible layer and a second flexible layer of the sample carrier that define a space therebetween configured to ...

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Номер записи: 65

27-01-2022 дата публикации

A Multiaxial Creep-Fatigue Prediction Method Based On ABAQUS

Номер: US20220026326A1

Автор: Guangjian Yuan, Runzi Wang, Shantung Tu, Sujuan Guo, Xiancheng Zhang, Xumin Zhu

Принадлежит: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

The present invention discloses a multiaxial creep-fatigue prediction method based on ABAQUS, which comprises: S1: establishing an ABAQUS finite element model, and defining the viscoplastic constitutive equation of the material to be tested by means of the user subroutine UMAT; S2: determining the model parameters required by the viscoplastic constitutive equation; S3: establishing the fatigue damage calculation model and creep damage calculation model of the multiaxial stress-strain state of the material to be tested; S4: establishing an ABAQUS finite element model under the multiaxial stress-strain state, and calculating the stress-strain tensor of each cycle based on the defined viscoplastic constitutive equation and the model parameters; S5: calculating the equivalent stress and equivalent plastic strain by means of the user subroutine USDFLD, and superimposing the fatigue damage and creep damage of each cycle according to the linear cumulative damage criterion to obtain the crack initiation life of the material to be tested based on the fatigue damage calculation model and creep damage calculation model in combination with the stress-strain tensor.

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Номер записи: 66

11-01-2018 дата публикации

Residual stress evaluation method

Номер: US20180010205A1

Автор: Mayumi Ochi, Naoki Ogawa, Nobuyuki Hori

Принадлежит: Mitsubishi Heavy Industries Ltd

A method of evaluating a residual stress including a condition setting step of setting a processing condition of water jet peening for a processing target; an analysis step of analyzing a jet flow when a fluid is injected from a nozzle model to a processing target model in accordance with the processing condition, and obtaining a void fraction which is a volume fraction of babbles contained in a unit volume of the fluid, and a collapse fraction, which is a volume fraction of the bubbles which collapse in a unit time in the unit volume of the fluid, at each position on a surface of the processing target model; an impact pressure correlation value calculating step of obtaining an impact pressure correlation value, which is a product of the void fraction and the collapse fraction at each position; an experimental value acquisition step of obtaining an impact pressure experimental value.

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Номер записи: 67

14-01-2016 дата публикации

Sensor Assembly, Method, and Device for Monitoring Shear Force and Pressure on a Structure

Номер: US20160011091A1

Автор: Huang Haiying, Jiang Hao

Принадлежит: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM

Shear force and pressure on a structure are simultaneously monitored using signals received from sensors with antennas on the structure. For example, sensors and systems for monitoring shear force and pressure have applications including ulcer prevention associated with structures including shoes, prosthetics, wheel-chairs, and beds of bed-bound patients. 1. An antenna sensor assembly , comprising:a first structure and a second structure, wherein the first structure is connected to and spaced apart from the second structure by an intermediate structure;wherein the intermediate structure is configured to allow the first structure to displace laterally relative to the second structure in a first direction in response to a shear force;the first structure comprising a reflector, wherein the reflector comprises a reflector area; andthe second structure comprising a patch antenna wherein, the patch antenna comprises an antenna area that radiates an electromagnetic wave;wherein an overlapping area is a portion of the antenna area that is overlapped by the reflector area; andwherein the patch antenna and the reflector are configured such that resonant frequencies of the antenna sensor assembly are based on a position of the reflector with respect to the patch antenna; and.wherein lateral displacement of the first structure relative to the second structure in response to a shear force shifts a lateral position of the reflector relative to the patch antenna and thereby changes a size of the overlapping area.2. The antenna sensor assembly of claim 1 , wherein the resonant frequencies of the antenna sensor assembly are based on the overlapping area.3. The antenna sensor assembly of claim 1 , wherein the intermediate structure is configured to allow the first structure to displace vertically relative to the second structure.4. The antenna sensor assembly of claim 1 , wherein the patch antenna includes a radiation patch.5. The antenna sensor assembly of claim 1 , wherein the ...

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Номер записи: 68

14-01-2016 дата публикации

BEAD MILL AND METHOD OF USE

Номер: US20160011171A1

Автор: Alfano Kenneth, Boyd Terrance, Kehrer Aaron, MEINES Steven, Parunak Gene, Tarasev Michael

Принадлежит:

A bead mill and an associated bead-mill-based machine for testing mechanical fragility of red blood cells, employing a cartridge configured to contain a sample while cells get stressed via bead oscillation and, in the case of the fragility testing machine, also while lysis levels get detected, for presentation of fragility information. 1. A machine configured for testing mechanical fragility of cells , the machine comprising:a sample miller for moving a bead residing within a sample comprising erythrocytes within a stressing chamber, wherein the stressing chamber is configured to cause hemolysis in said sample;a chamber pincher for reversibly compressing an optically transparent portion of said stressing chamber to a thickness(es) suitable for an optical measurement to quantify said hemolysis;an optical detector for said optical measurement to quantify said hemolysis; anda light source for said optical detector.2. The machine of claim 1 , wherein said sample miller comprises a motor from which rotary motion is translatable into linear motion claim 1 , such that said bead is movable by moving said stressing chamber.3. The machine of claim 1 , wherein said sample miller employs a magnetic field.4. The machine of claim 1 , wherein said chamber pincher comprises a stepper motor drivable by firmware to bring a fiber optic to contact said optically transparent portion.5. The machine of claim 1 , wherein said light source comprises one or more light-emitting diodes (LEDs).6. The machine of claim 1 , wherein said thickness(es) is a predetermined distance(s).7. The machine of claim 1 , wherein multiple optical measurements can occur during the compressing claim 1 , and said optical measurement to quantify said hemolysis is selected from among said multiple optical measurements claim 1 , based upon signal attenuation or calculated sample optical density.8. The machine of claim 1 , wherein separation of liquid and solid elements of said sample is not needed for said optical ...

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Номер записи: 69

11-01-2018 дата публикации

Method and Apparatus For a Cone Penetration Test With Whipstock-Enabled Soil Sampling

Номер: US20180010987A1

Автор: Lynk John M.

Принадлежит:

A method and apparatus for geotechnical soil sampling in conjunction with the Cone Penetration Test (CPT) is provided. The apparatus involves a tubular whipstock cell affixed between push rods and the lower elements of a cone penetrometer. The whipstock cell includes a whipstock having a beveled face. The whipstock face is oriented towards a sampling window pre-formed in the whipstock cell. The apparatus also includes at least one push rod connected to the proximal end of the whipstock cell, and an elongated sampling rod dimensioned to be slidably moved through the at least one push rod en route to the whipstock cell. The apparatus additionally comprises a soil sampler residing at a distal end of the push rod. A method of taking soil samples is also provided herein. 1. An apparatus for taking soil samples from subsurface soil strata , comprising:an elongated tubular whipstock cell having a proximal end and a distal end;a through-opening along a portion of the whipstock cell comprising a pre-formed window;a whipstock residing within the whipstock cell, the whipstock having a face angled towards the pre-formed window;at least one push rod connected to the proximal end of the whipstock cell, the push rod representing a tubular body;an elongated sampling rod dimensioned to be slidably moved through an inner diameter of the at least one push rod en route to the whipstock cell;a mechanical soil sampler configured to extend through the pre-formed window; anda bent sub having a proximal end and a distal end, wherein the proximal end is connected to a distal end of the sampling rod, and the distal end is connected to the soil sampler, and wherein the bent sub is configured to deflect off of the whipstock face when urged through the pre-formed window.2. The soil sampling apparatus of claim 1 , further comprising:a cone penetrometer residing at or below a distal end of the whipstock cell, the cone penetrometer comprising a conical tip and a friction sleeve.3. The soil sampling ...

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Номер записи: 70

11-01-2018 дата публикации

DROP WEIGHT TOWER FOR CRACK INITIATION IN FRACTURE MECHANICS SAMPLES

Номер: US20180010993A1

Автор: Bajaj Devendra, KAY David

Принадлежит: SABIC Global Technologies, B.V.

Drop-weight tower () for reproducibly initiating a crack in a material sample for fracture mechanics testing comprising a base () with a top surface upon which a sample holder () is mounted to grip a material sample, an attachment column () having a linear rail (), a carriage () attached to the linear rail () and a stage () is attached to the carriage. The stage () includes a vertical rod () and a razor-blade holder (). A weight is slidably mounted to the vertical rod (). The carriage is used to adjust the height of the stage () relative to the material sample. A hammer () slides up and down the vertical rod () to apply consistent and reproducible force on the razor () that then initiates the crack in the material sample. 1. A drop weight tower for initiating a crack in a material sample for fracture mechanics testing , the drop weight tower comprising:(a) a base having a top surface, and a sample holder mounted on the top surface for gripping the sample;(b) an attachment column extending upward from the top surface of the base at a first vertical location, the attachment column including a linear rail; (i) a carriage capable of sliding up and down along the linear rail of the attachment column; and', '(ii) a stage extending perpendicular to the linear rail, the stage having a first end that is attached to the carriage, a second end distal from the carriage, a top surface, and a bottom surface;, '(c) a carriage assembly attached to the linear rail of the attachment column, the carriage assembly including(d) a razor blade holder on the bottom surface at the second end of the stage, located over the sample holder;(e) a razor blade which is separable from the razor blade holder; and (i) a vertical rod; and', '(ii) an annular weight surrounding the vertical rod and operable to slide along the vertical rod., '(f) a hammer assembly on the top surface at the second end of the stage in-line with the razor blade holder, comprising2. The drop weight tower of claim 1 , wherein ...

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Номер записи: 71

11-01-2018 дата публикации

CONCRETE TEMPERATURE STRESS TESTING MACHINE SYSTEM AND CONCRETE TEMPERATURE STRESS TESTING METHOD

Номер: US20180011075A1

Автор: HU YU, LI QINGBIN, Wang Ge, ZHU He

Принадлежит:

A concrete temperature stress testing machine system including: a concrete temperature stress testing machine and a walk-in environment simulation laboratory system; and the walk-in environment simulation laboratory system includes a walk-in environment simulation laboratory, a host control cabinet, a compressor set room, an environment room control cabinet and a computer. The concrete temperature stress testing machine achieves the temperature deformation self-compensation by using the combination of different proportions of invar and No. 45 steel, an embedded type directly measuring deformation technology of the concrete temperature stress testing is achieved by the fit between the upper and side embedded parts, the embedded rod and the extending rod. The concrete temperature stress testing machine system according to embodiments of the present disclosure may compensate the impact of the temperature deformation by itself and directly measure the true deformation of concrete, thereby having high accuracy, good long-term stability, easy operation and other advantages. 1. A concrete temperature stress testing machine system comprising a concrete temperature stress testing machine and a walk-in environment simulation laboratory system , wherein the concrete temperature stress testing machine is disposed within the walk-in environment simulation laboratory system , wherein ,the walk-in environment simulation laboratory system comprises an outer laboratory, a walk-in environment simulation laboratory disposed in the outer laboratory, and a host control cabinet, a compressor set room, an environment room control cabinet and a computer disposed between the outer laboratory and the walk-in environment simulation laboratory;a plurality of concrete temperature stress testing machines are arranged in the walk-in environment simulation laboratory at the same time;the environment room control cabinet is provided with an environment simulation control unit therein, and the ...

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Номер записи: 72

14-01-2021 дата публикации

Centrifuge rotor comprising an on-board measurement device

Номер: US20210010910A1

Автор: Dietmar Lerche, Uwe Mertens, Uwe RIETZ

Принадлежит: L U M GmbH

A centrifuge rotor for measuring a characteristic of a sample subjected to centrifugation, the centrifuge rotor including: a rotor body; at least one sample holder for holding a sample; at least one on-board measurement device for measuring a characteristic of the sample held in the at least one sample holder during rotation of the rotor.

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Номер записи: 73

10-01-2019 дата публикации

Ring Shear and Seepage-Coupled Apparatus and Ring Shear and Seepage-Coupled Test System for Rock and Rock Fracture under Tension or Compression Stress

Номер: US20190011344A1

Автор: GAO Yang, HU Dawei, Jiang Yue, Lu Jingjing, YANG Fanjie, ZHANG Chuanqing, Zhou Hui, Zhu Yong

Принадлежит:

A ring shear and seepage-coupled apparatus and a ring shear and seepage-coupled test system for rock and rock fracture under tension or compression stress are provided, relating to the technical field of mechanical testing devices. As to the ring shear and seepage-coupled apparatus, an axial piston rod is connected with an upper shear box, a torque transferring shaft is connected with a lower shear box, an axial force transducer is provided on the axial piston rod, a torque transducer is provided on the torque transmitting shaft, and a force transferring plate is fixedly connected onto the upper shear box. The force transferring plate is able to transmit a counter force for exerting a torque. Radial and circumferential seepage tests can be achieved by providing a seepage structure. The ring shear and seepage-coupled test system comprises a servo pump and the ring shear and seepage-coupled apparatus as mentioned above. 1. A ring shear and seepage-coupled apparatus for rock and rock fracture under tension or compression stress , comprising a first frame , a second frame , a first bottom plate , a second bottom plate , an axial piston rod , a torque transferring shaft , an axial force transducer , a torque transducer , an upper shear box , a lower shear box and a seepage structure ,wherein the first frame is in fixed connection with the first bottom plate, the second frame is in fixed connection with the second bottom plate, the first frame is positioned between the first bottom plate and the second bottom plate, and the second frame is positioned at a side of the second bottom plate, with the side away from the first bottom plate; the upper shear box and the lower shear box are positioned in the second frame, a specimen is fixedly arranged between the upper shear box and the lower shear box, and the upper shear box, the lower shear box and the specimen are positioned on a same axis;the torque transducer is provided on the torque transferring shaft; the torque ...

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Номер записи: 74

14-01-2021 дата публикации

METHODS AND APPARATUS TO CONTROL STAGING OF TEST SPECIMENS

Номер: US20210010915A1

Автор: Jackson Christopher, Morse Jason, Nicol Scott

Принадлежит:

Methods and apparatus to control staging of test specimens. Disclosed example systems to perform automated testing include: a stage configured to secure one or more test specimens; one or more actuators configured to position the stage and the one or more test specimens; a user interface configured to: receive input defining a test sequence of a plurality of points to be tested on the one or more test specimens; display a graphic indicative of positions of the plurality of points on the one or more test specimens and one or more paths to be taken by the stage to traverse the plurality of points during testing of the test sequence; and control circuitry configured to control a test process of the test sequence in accordance with the plurality of points and the one or more paths. 1. A system to perform automated testing of one or more specimens , the system comprising:a stage configured to secure one or more test specimens;one or more actuators configured to position the stage and the one or more test specimens; receive input defining a test sequence of a plurality of points to be tested on the one or more test specimens; and', 'display a graphic indicative of positions of the plurality of points on the one or more test specimens and one or more paths to be taken by the stage to traverse the plurality of points during testing of the test sequence; and, 'a user interface configured tocontrol circuitry configured to control a test process of the test sequence in accordance with the plurality of points and the one or more paths.2. The system as defined in claim 1 , wherein the control circuitry is configured to calculate the path based on the plurality of points.3. The system as defined in claim 1 , wherein the input defining the plurality of points comprises at least one of: coordinates of the plurality of points on the stage claim 1 , a number of rows of the plurality of points claim 1 , a number of columns of the plurality of points claim 1 , a number of the plurality ...

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Номер записи: 75

09-01-2020 дата публикации

METHOD FOR EVALUATING BREAKAGE STRENGTH OF FIRST AND SECOND CEMENTED SURFACES OF WELL CEMENTATION UNDER DYNAMIC LOAD

Номер: US20200011777A1

Автор: CHENG Xiaowei, GAO Xianshu, GUO Xiaoyang, JIN Jianzhou, LI Zaoyuan, LIU Kaiqiang, MEI Kaiyuan, QIN Dan, WEN Zhaijun, YU Yongjin, ZHANG Chunmei, ZHANG Gaoyin, ZHANG Xingguo

Принадлежит:

A method for evaluating the breakage strength of first and second cemented surfaces of well cementation under a dynamic load, includes: producing a rock-set cement-casing composite structure sample; clamping the sample between an incident rod and an output rod of a Hopkinson rod, hitting the incident rod with a conical punch to generate incident waves, enabling the incident waves to pass through the sample to generate reflected waves and projected waves, recording dynamic strain signals of incident waves, reflected waves and projected waves, and converting the dynamic strain signals into electrical signals and transmitting the electrical signals to a computer; recording the process and the corresponding time point from breakage starting to a complete breakage of the first and second cemented surfaces by a photographic instrument; obtaining a strain rate time travel curve and a stress-strain curve, and obtaining the corresponding breakage strength by analyzing the curve peak points. 1. A method for evaluating a breakage strength of first and second cemented surfaces of a well cementation under a dynamic load , sequentially comprising the following steps:(1) producing a rock-set cement-casing composite structure sample;connecting a left part and a right part of a middle mold body with screws; fixing a lower cover to form a cuboid curing mold with a plurality of cylindrical inner cavities; placing round steel blocks at a bottom of each of the plurality of cylindrical inner cavities and then pouring a cement slurry; placing a round rock on a surface of the cement slurry, and covering with an upper cover, the upper cover provided with a groove for discharging a redundant cement slurry; then placing the mold in a water bath kettle and curing to a desired age; demolding, and taking the round steel blocks, set cement and the round rock out together to obtain the rock-set cement-casing composite structure sample; sub-step 1) coating two end surfaces of the rock-set cement- ...

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Номер записи: 76

03-02-2022 дата публикации

ROLLING TEST DEVICE AND METHOD

Номер: US20220034774A1

Автор: Li Jin, Wang Huaishan, Ye Lidan

Принадлежит:

Disclosed are a rolling test device and a rolling test method. The rolling test device includes a test platform having a rolling surface for placing a test piece to be rolled; a rolling jig located on one side of the rolling surface; and a driving member connected to the rolling jig. A roller is connected to one end of the rolling jig towards the rolling surface, and after the roller is pressed against the rolling surface, the driving member drives the rolling jig to move on the rolling surface to drive the roller to perform a rolling test on the rolling surface. 1. A rolling test device , comprising:a test platform having a rolling surface for placing a test piece to be rolled;a rolling jig located on one side of the rolling surface; anda driving member connected to the rolling jig;wherein a roller is connected to one end of the rolling jig towards the rolling surface, and after the roller is pressed against the rolling surface, the driving member drives the rolling jig to move on the rolling surface to drive the roller to perform a rolling test on the rolling surface.2. The rolling test device of claim 1 , wherein a rolling direction of the roller is parallel to a first direction.3. The rolling test device of claim 1 , further comprising a backlight source for illuminating the test piece to be rolled.4. The rolling test device of claim 1 , wherein a portion of the test piece to be rolled is placed on the rolling surface claim 1 , and another portion of the test piece to be rolled extends out of the test platform.5. The rolling test device of claim 1 , wherein:the rolling jig includes a connecting plate, a mounting seat and a cardan shaft;the mounting seat is movably connected to the connecting plate through the cardan shaft;an output end of the driving member is connected to one end of the connecting plate away from the mounting seat; andthe roller is connected to one end of the mounting seat away from the connecting plate.6. The rolling test device of claim 5 , ...

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Номер записи: 77

03-02-2022 дата публикации

MATERIAL TESTING MACHINE AND METHOD OF CONTROLLING MATERIAL TESTING MACHINE

Номер: US20220034775A1

Автор: MATSUURA Tohru

Принадлежит: SHIMADZU CORPORATION

Provided is a material testing machine () including: a load mechanism () that applies a load to a test object; a load measurement device that measures the load applied to the test object; and a control device () that performs a feedback control for the load mechanism () based on a deviation between a measurement value of the load and a target value of the load, in which a change in a physical quantity generated in the test object due to the load is measured, and the control device () includes a hunting detection unit () that detects hunting by comparing a frequency spectrum obtained by converting time-series data of the measurement value with a frequency spectrum obtained by converting the time-series data of the target value. 1. A material testing machine comprising:a load mechanism that applies a load to a test object;a load measurement device that measures the load applied to the test object; anda control device that performs a feedback control for the load mechanism based on a deviation between a measurement value of the load and a target value of the load,wherein a change in a physical quantity generated in the test object due to the load is measured, andthe control device comprises a hunting detection unit that detects hunting by comparing a frequency spectrum obtained by converting time-series data of the measurement value with a frequency spectrum obtained by converting time-series data of the target value, or by comparing a frequency spectrum obtained by converting time-series data of a command value of the feedback control with the frequency spectrum obtained by converting the time-series data of the target value.2. The material testing machine according to claim 1 , whereinthe hunting detection unit removes an influence of noise of a control system in the feedback control and/or noise of a measurement system measuring the load and the physical quantity from the measurement value and compares the frequency spectrum of the measurement value with the ...

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Номер записи: 78

03-02-2022 дата публикации

TENSION TEST METHOD AND TEST PIECE

Номер: US20220034776A1

Автор: NAKAYAMA Takashi

Принадлежит: SHIMADZU Techno-Research, Inc.

Three actuators arranged on an identical plane are used, and a tensile load is applied to each tensile section of a test piece including three tensile sections by using each actuator to conduct a tension test on the test piece. 1. A tension test method comprising:arranging three actuators on an identical plane; andapplying tensile loads respectively to three tensile sections of a test piece by using the three actuators to conduct a tension test of the test piece.2. The tension test method according to claim 1 ,wherein at least two angles of angles made by the tensile directions formed by the three actuators are identical to each other.3. The tension test method according to claim 1 ,wherein the angles respectively made by the tensile directions formed by the three actuators are all identical.4. A test piece comprising:tensile sections that respectively extend in three directions on an identical plane from a test piece main body; andnotches respectively arranged by forming intersecting parts of the tensile sections to have arc shapes at locations, of the test piece main body, where the tensile sections intersect one another. The present application claims priority under 35 U.S.C.§ 119 to Japanese Patent Application No. 2020-130476 filed on Jul. 31, 2020. The content of the application is incorporated herein by reference in its entirety.The present invention relates to a tension test method and a test piece.Generally, tension test apparatuses for conducting tension tests on test pieces are known.Of such apparatuses, in a two-axis tension test apparatus, four actuators arranged at right angles pull a test piece formed in a cross shape to conduct the test.In this case, the test piece having a cross shape is formed with a plurality of slits along each test piece on an outside of a central portion in the cross shape in order to correspond to the elongation of the test piece in one direction (for example, see “Development of biaxial tension testing method for hard aluminum ...

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Номер записи: 79

03-02-2022 дата публикации

System and method for evaluating a bond

Номер: US20220034861A1

Автор: Morteza Safai

Принадлежит: Boeing Co

A system for evaluating a bond includes a first electrode and a second electrode that are spaced apart from one another. The system also includes a sacrificial material layer positioned proximate to a surface of a bonded structure that includes the bond. The system also includes a power source configured to cause the first and second electrodes to generate an electrical arc that at least partially ablates the sacrificial material layer as part of a non-destructive inspection of the bond.

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Номер записи: 80

03-02-2022 дата публикации

ROTATING ELECTRIC MACHINE TEST METHOD, ROTATING ELECTRIC MACHINE TEST DEVICE, AND ROTATING ELECTRIC MACHINE

Номер: US20220034968A1

Автор: Akiyoshi Masao, HANA Norihiko, Kikuichi Yoshihide

Принадлежит: Mitsubishi Electric Corporation

A rotating electric machine includes a stator and a rotor. An imaging device images a test target portion which is a part of the rotor, to generate image data of the test target portion, and transmits the generated image data to an image processing device. The image processing device generates strain change information representing change in the strain distribution in the test target portion by digital image correlation on the basis of the test image data generated by the imaging device. The state of the rotor is tested using the generated strain change information. 1. A rotating electric machine test method for testing a rotating electric machine including a rotor and a stator , the rotating electric machine test method comprising:a test image data acquisition step of acquiring test image data by imaging a test target portion which is a part of the rotor by an imaging device; anda change information generation step of generating, as strain change information, change in a strain distribution in the test target portion by digital image correlation on the basis of the acquired test image data.2. The rotating electric machine test method according to claim 1 , further comprising an initial image data acquisition step of acquiring initial image data by imaging the test target portion in a first period claim 1 , whereinthe test image data acquisition step includes a step of acquiring the test image data by imaging the test target portion in a second period after the first period, andthe change information generation step includes a step of generating the strain change information on the basis of the initial image data and the test image data.3. The rotating electric machine test method according to claim 1 , further comprising a time determination step of determining a time during which operation of the rotating electric machine is able to continue claim 1 , on the basis of the strain change information.4. The rotating electric machine test method according to claim 1 , ...

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Номер записи: 81

21-01-2016 дата публикации

Sample Extraction Apparatus And Method For Liquefaction Assessment

Номер: US20160018307A1

Автор: Kim Chol-Ho

Принадлежит: Hokoku Engineering Co., Ltd.

A sample extraction apparatus for extracting samples from a target ground in order to assess whether liquefaction occurs in the target ground, includes: a casing; a holding sleeve, installed inside the casing, for holding the samples; and a vibrator configured to apply vibration accelerations corresponding to different seismic intensities to the samples in the casing, respectively, after the casing is inserted into the target ground to hold the samples of the target ground in the holding sleeve, so that a different liquefaction condition is provided for each sample, whereby said apparatus is configured such that, after having applied different vibration accelerations to the samples in the casing inserted into the target ground, respectively, said apparatus can resultantly extract the samples so that a liquefaction assessment can be made under a plurality of seismic conditions.

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Номер записи: 82

21-01-2016 дата публикации

Hardness tester

Номер: US20160018308A1

Автор: Masanobu Kataoka, Takayuki Yamada

Принадлежит: Mitutoyo Corp

A hardness tester includes: a tester main body, an inputter receiving an operation input from a user, a controller controlling an entirety of the hardness tester including the inputter, and a display which displays a predetermined image by being controlled by the controller. The controller includes a measurement procedure suggester and a suggestion switcher. The measurement procedure suggester suggests a procedure for measuring an indentation dimension value to the user. When receiving an operation input for proceeding to a subsequent procedure via the inputter, the suggestion switcher switches suggestions from the measurement procedure suggester and suggests the subsequent procedure to the user.

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Номер записи: 83

18-01-2018 дата публикации

BRAKE BEAM FATIGUE TEST STAND

Номер: US20180017465A1

Автор: Jin Xing, LUO YUNKANG

Принадлежит:

The present invention discloses a brake beam fatigue test stand, for simultaneously testing a fatigue strength of two brake beams, comprise: a base, and four upright columns vertical to the base and arranged on the base at intervals; a first tangential load actuator is mounted vertically between the first upright column and the second upright column, with simulated wheels being mounted on a front side and a rear side of a bottom of the actuator; a pressure load actuator is mounted vertically between the second upright column and the third upright column; a second tangential load actuator is mounted vertically between the third upright column and the fourth upright column, with simulated wheels being mounted on a front side and a rear side of a bottom of the actuator; the stiffness of the test stand in vertical and transverse directions is enhanced. 1. A brake beam fatigue test stand , for simultaneously testing a fatigue strength of two brake beams , wherein , comprising: a base , and four upright columns vertical to the base and arranged on the base at intervals; from a left side to a right side of the base successively , there are a first upright column , a second upright column , a third upright column and a fourth upright column , wherein ,a first tangential load actuator capable of applying a tangential load is mounted vertically between the first upright column and the second upright column, with simulated wheels being mounted on a front side and a rear side of a bottom of the first tangential load actuator;a pressure load actuator capable of applying a pressure load is mounted vertically between the second upright column and the third upright column;a second tangential load actuator capable of applying a tangential load is mounted vertically between the third upright column and the fourth upright column, with simulated wheels being mounted on a front side and a rear side of a bottom of the second tangential load actuator; the second tangential load actuator ...

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Номер записи: 84

18-01-2018 дата публикации

DEVICE FOR MEASURING THE DYNAMIC STRESS/STRAIN RESPONSE OF DUCTILE MATERIALS

Номер: US20180017475A1

Автор: Damazo Jason Scott, Day Arthur C., Housen Kevin Richard, Sweet William J.

Принадлежит:

A method and apparatus for measuring a dynamic tensile stress and/or tensile strain response of a material such as an elastic material and/or a ductile material. The apparatus may include a striker bar, a stretcher bar, and a drive assembly configured to propel the striker bar toward the stretcher bar. The apparatus may further include a stationary specimen mount and a movable specimen mount that receive a test sample. The striker bar and the stretcher bar of the apparatus may provide a continuous stress on the test sample and an accurate tensile stress/strain measurement. 1. An apparatus for measuring a dynamic tensile stress/strain response of a material , comprising:a striker bar;a stretcher bar;a drive assembly configured to propel the striker bar toward the stretcher bar;a stationary specimen mount configured to receive a first portion of a test sample and to maintain the first portion of the test sample in a fixed position; anda movable specimen mount configured to receive a second portion of the test sample and to move away from the stationary specimen mount during a test or measurement of the test sample.2. The apparatus of claim 1 , wherein the striker bar is aligned with the stretcher bar claim 1 , and the stretcher bar is configured to move away from the stationary specimen mount from an impact of the striker bar with the movable specimen mount.3. The apparatus of claim 2 , wherein:the striker bar is configured to generate a pressure wave through the stretcher bar resulting from the impact of the striker bar with the movable specimen mount;the striker bar and the stretcher bar are configured such that the pressure wave traverses from a first end of the stretcher bar to a second end of the stretcher bar and back to the first end of the stretcher bar;the striker bar and the stretcher bar are configured such that the pressure wave traverses from the first end of the stretcher bar into the striker bar during physical contact of the striker bar with the ...

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Номер записи: 85

17-04-2014 дата публикации

Method for measuring dynamic viscoelasticity of particulate material

Номер: US20140102223A1

Автор: Kazunobu Kamiya

Принадлежит: Dexerials Corp

A method for measuring a dynamic viscoelasticity of a particulate material uses, as a sample to be subjected to the dynamic viscoelasticity measurement, a sheet-shaped test piece in which the particulate material to be measured is attached to an adhesion layer formed on a heat-resistant sheet base material. With regard to the measurement conditions of the dynamic viscoelasticity measurement, the measurement temperature is within a predetermined temperature range of from −150 to 300° C., the heating rate is a constant rate ranging from 0.01 to 100° C./minute, the measurement frequency is a constant frequency ranging from 0.01 to 100 Hz, and a sine wave control tensile mode is employed. When the particulate material is attached to the adhesion layer, the particulate material crushed in advance is sprinkled on one side of the adhesion layer and then the particulate material-sprinkled surface is squeegeed and/or air-blown.

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Номер записи: 86

17-01-2019 дата публикации

Apparatus and methods for testing components under force

Номер: US20190017910A1

Автор: Mark A. Yeager

Принадлежит: Covestro LLC

An apparatus and methods for testing components under force is described herein. The apparatus comprises cap bolts that may be tightened to exert a measurable, constant force upon a lever arm that rotates about a fulcrum. The lever arm pushes down upon a push rod, to exert a force upon a test piece in an insertion well, which may be filled with fluid. The fulcrum may be positioned, such that the force from the cap bolt gives a magnifying, or a diluting force, upon the push rod.

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Номер записи: 87

17-01-2019 дата публикации

DYNAMIC MECHANICAL ANALYSIS SYSTEM

Номер: US20190017912A1

Автор: Esmaeeli Roja, Farhad Siamak

Принадлежит: THE UNIVERSITY OF AKRON

A dynamic mechanical analysis system provides an actuator that imparts expansion and contraction forces (e.g. shear force) to a viscoelastic material at high frequencies. Such high frequency analysis allows for the direct and accurate measurement of the characteristics of the material at high expansion/contraction frequencies directly, without the use of additional predictive analysis techniques, such as time-temperature superposition. The system also utilizes a clamping system, whereby two different sections of the viscoelastic material are held in place between by a pair of fixed clamps and a force member that is moved by the actuator. As such, the system is able to subject the viscoelastic material sample to simulated “road” conditions to identify various performance properties associated with the material sample. 1. A dynamic mechanical analysis (DMA) system comprising:a fixture;an actuator attached to said fixture;a force sensor carried by said actuator;an adjustable clamp assembly attached to said fixture and adapted to hold an elastomeric material;a computing unit in operative communication with said force sensor and said actuator;wherein said actuator is configured to be controlled by said computing unit to apply a periodic force to the material at a test frequency between 100 Hz to 10 kHz, and wherein said force sensor measures said force applied by said actuator to the material.2. The system of claim 1 , wherein said force is a shear force.3. The system of claim 1 , wherein said actuator is a piezoelectric actuator.4. The system of claim 1 , wherein said force sensor is a piezoelectric sensor.5. The system of claim 1 , wherein said clamp assembly comprises:a first clamp member attached to said fixture;a second clamp member attached to said fixture;a force member attached to said actuator;wherein the material includes a first section of material and a second section of material, wherein said clamp assembly is configured such that the first section of ...

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Номер записи: 88

22-01-2015 дата публикации

Apparatus, System and Method for Compression Testing of Test Specimens

Номер: US20150020603A1

Автор: Kenneth H. Griess, Max U. Kismarton

Принадлежит: Boeing Co

There is provided an apparatus for compression testing. The apparatus has a base assembly having an end load element attached to the base assembly, the base assembly being rigid. The apparatus has a support assembly attached to the base assembly, and having a plurality of window portions. The apparatus has a core assembly installed within the support assembly, the core assembly being crushable and configured to protect the support assembly and the base assembly from fracture loads generated during compression testing. The base assembly, the support assembly, and the core assembly together form an apparatus for compression testing of a test specimen having a notch portion. The apparatus is configured for use with an optical strain measurement system. When the test specimen is installed in the support assembly, the test specimen and the notch portion are visible to the optical strain measurement system through the plurality of window portions.

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Номер записи: 89

16-01-2020 дата публикации

SELF-HEALING METHOD FOR FRACTURED SiC AMORPHOUS NANOWIRES

Номер: US20200018670A1

Автор: CHEN Leilei, CUI Junfeng, GUO Dongming, Zhang Zhenyu

Принадлежит:

The present invention provides a self-healing method for fractured SiC amorphous nanowires. A goat hair in a Chinese brush pen of goat hair moves and transfers single crystal nanowires under an optical microscope. On an in-situ nanomechanical test system of a TEM, local single crystal nanowires are irradiated with an electron beam for conducting amorphization transformation. Amorphous length of a single crystal after transformation is 60-100 nm. A fracture strength test is conducted on the amorphous nanowires in the single crystal after transformation in the TEM; and fracture strength of the amorphous nanowires is 9-11 GPa. After the amorphous nanowires are fractured, unloading causes a slight contact between the fractured end surfaces; and self-healing of the nanowires is conducted after waiting for 16-25 min in a vacuum chamber of the TEM. Atom diffusion is found at a healed fracture through in-situ TEM representation; and recrystallization is found in the amorphous nanowires. The present invention provides a method for realizing self-healing for fractured SiC amorphous nanowires without external intervention. 1(1) SiC single crystal nanowires have a diameter of 92-120 nm;(2) the tail end of a Chinese brush pen of goat hair is fixed to a mobile platform of an optical microscope, and the other end moves and transfers single crystal nanowires placed on the mobile platform under another optical microscope through a goat hair; the single crystal nanowires are placed on a microtest apparatus of an in-situ TEM mechanical test system;(3) both ends of the nanowires are fixed to the microtest apparatus using conductive silver epoxy;{'sup': '2', '(4) the microtest apparatus is installed on an in-situ TEM nanomechanical test system; local single crystal nanowires are irradiated with an electron beam in the TEM for conducting amorphization transformation; the irradiation density of the electron beam is 45-55 A/cm; irradiation time is 55-70 min; amorphous length of a single ...

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Номер записи: 90

16-01-2020 дата публикации

VISUALIZED SUPERCRITICAL CARBON DIOXIDE FRACTURING PHYSICAL SIMULATION TEST METHOD

Номер: US20200018671A1

Автор: LIN Cankun, WANG Yuanyuan, ZHANG Guangqing, Zheng Xuelin

Принадлежит:

The present invention relates to a visualized supercritical carbon dioxide fracturing physical simulation test method, comprising: preparing a rock sample, preparing a prefabricated fracture; curing the rock sample; fixing the cured rock sample in a confining pressure chamber, and applying a preset three-way confining pressure and pore pressure to the rock sample; turning on a high-speed camera, injecting supercritical carbon dioxide fracturing fluid to the central hole, and continuously recording a fluid injection pressure and test surface image information of the rock sample until the test is ended; observing a hydraulic fracture inside. Through this method, it is possible to obtain images in the whole process of initiation and extension of the artificial fracture during supercritical carbon dioxide fracturing, and distribution rules of parameters, such as stress, strain and pore pressure on the surfaces of the rock sample. 1. A visualized supercritical carbon dioxide fracturing physical simulation test method , comprising:step a: preparing a rock sample, drilling a central hole in the rock sample, and preparing a prefabricated fracture;step b: cladding and pasting an upper surface of the rock sample with an upper PVC film, cladding and pasting a lower surface of the rock sample with a lower PVC film, and placing the rock sample in an incubator for curing;step c: fixing the cured rock sample in a confining pressure chamber of a visualized two-dimensional hydraulic fracture simulation experimental device, and applying a preset three-way confining pressure and pore pressure to the rock sample;step d: turning on a high-speed camera at a top portion of the visualized two-dimensional hydraulic fracture simulation experimental device, injecting supercritical carbon dioxide fracturing fluid from a bottom to the central hole of the rock sample, and continuously recording a fluid injection pressure and test surface image information of the rock sample until the test is ...

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Номер записи: 91

16-01-2020 дата публикации

Large Sample Testing Device, Method, and System

Номер: US20200018672A1

Автор: Miller Jack

Принадлежит: Stress Engineering Services, Inc.

The present invention includes a load frame test device using a plurality of levers about a common pivot point for applying combinations of tensile loading and bending on test articles at magnitudes seen in offshore applications. 1. A method for testing an article comprising:a means for coupling the first end of the tubular;a means for coupling the second end of the tubular;a means for applying a first force;a means for applying a second force;a means for converting the first force into a third force;a means for converting the second force into a fourth force;a means for converting the third force into a tensile stress in the tubular; anda means for converting the fourth force into a bending moment in the tubular.2. The method of claim 1 , wherein the means for coupling the first end of the tubular is a split clamp.328. The method of claim claim 1 , wherein the means for coupling the second end of the tubular is a split clamp.4. The method of claim 1 , wherein the means for applying a first force comprises pressurizing a first hydraulic fluid.5. The method of claim 1 , wherein the means for applying a second force comprises pressurizing a second hydraulic fluid.6. The method of claim 1 , wherein the means for converting the first force into a third force includes a first lever.7. The method of claim 1 , wherein the means for converting the second force into a fourth force includes a second lever.8. The method of claim 1 , wherein the means for converting the third force into an axial load includes rotating the third force.9. The method of claim 1 , wherein the means for converting the fourth force into a bending moment includes applying the fourth force a distance away from the test article.10. A method of applying a bending moment to a test article claim 1 , the method comprising:applying a bending moment to the test article, wherein a compression force is applied to the test article, andapplying an axial load to the text article, wherein said axial load at least ...

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Номер записи: 92

16-01-2020 дата публикации

CLOSED-LOOP CONTROL METHOD BASED ON TESTING MACHINE FOR ACCURATELY CONTROLLING LOOSENESS OF BOLT TRANSVERSE LOAD

Номер: US20200018673A1

Автор: Ma Yue, SUN Qingchao, Sun Wei, WANG Chuanhua, Zhang Bao

Принадлежит:

A closed-loop control method based on a testing machine for accurately controlling the loosening of a bolt transverse load is disclosed. The testing machine for accurately controlling the loosening of the transverse load comprises a load generating motor, a load transfer mechanism, a load control motor and a load control mechanism. The control method of the present invention controls the load generating motor to drive the load transfer mechanism based on control commands, displacement signals collected by the displacement sensor and force signals collected by an S-shaped column type pressure sensor. The testing machine for the looseness of the bolt transverse load is essential in the aspect of exploring a looseness law of a bolt, and can be used to simulate load bearing conditions of the bolt. However, under the condition that some bolts bear constant force load transversely, the testing machine is not used or is inaccurate. The control method of the present invention can accurately control the load transverse load to be stable, especially can ensure constant transverse load and can also simulate the transverse load bearing situation of the bolt more accurately and more comprehensively. The present invention relates to a testing machine for looseness of a bolt transverse load, and more particularly, relates to a closed-loop control method based on a testing machine for accurately controlling looseness of a bolt transverse load.For bolted connection, the main reason for looseness is: when the bolt bears transverse (perpendicular to the bolt axis) vibration load, with the increase of the vibration force, a friction coefficient between bolt pairs is even decreased to zero, thereby damaging self-locking condition of the thread, generating slight relative slide and causing automatic rotation and looseness of the nut. In some extreme cases, the looseness of the transverse load may decrease the bolt preload by 30%-40%. The testing machine for the looseness of the ...

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Номер записи: 93

16-01-2020 дата публикации

TORSION TESTING MACHINE AND METHODS FOR ADDITIVE BUILDS

Номер: US20200018674A1

Автор: Greenfield Jacob, Ocken Thomas J., Samo Joseph, Shea Lukas, Tibbs Andy W.

Принадлежит:

A system can include a torsion applicator (e.g., a torsion motor and shaft) configured to apply a torque to a test article that is additively built on and attached to a build plate. The system can include at least one twist sensor and at least one torque sensor. A method for determining quality of an additively manufactured article or batch thereof can include torsion testing at least one additively manufactured test article that is built on and attached to a build plate while the at least one test article is still attached to the build plate. 1. A torsion testing machine for additively manufactured test articles , comprising:at least one build plate holder configured to allow insertion of and retention of a build plate therein;at least one torsion motor;at least one torsion shaft configured to operatively connect to the torsion motor, the at least one torsion shaft configured to mate with at least one test article built on and attached to the build plate when the build plate is in the build plate holder, the at least one torsion motor configured to apply a torsion to the at least one test article through the torsion shaft while the build plate is retained in the build plate holder; andat least one torque sensor operatively connected to the torsion applicator to determine a torque applied by the torsion motor to the test article.2. The machine of claim 1 , further comprising at least one strain gauge operatively connected to the at least one torsion applicator to determine a twist on the torsion shaft.3. The machine of claim 2 , further comprising a data acquisition system operatively connected to the torque sensor and the strain gauge claim 2 , and configured to compare the torque and the twist to known data to determine a condition of the test article and/or other articles built on the build plate.4. The machine of claim 3 , wherein the torsion motor is mounted to a movable assembly to allow the torsion motor to be repositioned relative to the build plate holder ...

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Номер записи: 94

16-01-2020 дата публикации

TORSION TESTING MACHINE AND METHODS FOR ADDITIVE BUILDS

Номер: US20200018675A1

Автор: Greenfield Jacob, Logsdon Jerry, Ocken Thomas J., Shea Lukas

Принадлежит:

A system can include a torsion applicator (e.g., a torsion motor and shaft) configured to apply a torque to a test article that is additively built on and attached to a build plate. The system can include at least one twist sensor and at least one torque sensor. A method for determining quality of an additively manufactured article or batch thereof can include torsion testing at least one additively manufactured test article that is built on and attached to a build plate while the at least one test article is still attached to the build plate. 1. A method for determining quality of an additively manufactured article or batch thereof , comprising:torsion testing at least one additively manufactured test article that is built on and attached to a build plate while the at least one test article is still attached to the build plate.2. The method of claim 1 , wherein torsion testing includes applying a torque to the test article using a torsion testing machine while the build plate is retained in the torsion testing machine.3. The method of claim 2 , further comprising removing the build plate from an additive manufacturing machine and inserting the build plate into the torsion testing machine.4. The method of claim 3 , further comprising retaining the build plate in the torsion testing machine.5. The method of claim 1 , further comprising additively manufacturing the at least one test article on the build plate to have a test head configured to be torqued by a socket.6. The method of claim 5 , wherein the test head includes a hex shape.7. The method of claim 6 , wherein the at least one test article includes a narrow body.8. The method of claim 2 , further comprising sensing a torque on the at least one test article and/or a twist on the at least one test article to create torque data and/or twist data.9. The method of claim 8 , further comprising comparing the torque data and/or twist data to known expected data to determine a quality of the at least one test article. ...

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Номер записи: 95

21-01-2021 дата публикации

IMPACT TESTING SYSTEM AND METHOD FOR OPERATING AN IMPACT TESTING SYSTEM

Номер: US20210018397A1

Автор: Xin Xin

Принадлежит:

An impact testing system includes an impact testing device with a head and a handle to which the head is affixed. The impact testing system also includes at least one vibration sensor. A method of using the impact testing device for automatically assessing impacts applied with the impact testing device to an object is also provided. 1. An impact testing system comprising:a processor;an impact testing device comprising a head and a handle to which the head is affixed; andat least one vibration sensor communicatively coupled to the processor, process data received from the at least one vibration sensor;', 'compare data obtained from the at least one vibration sensor with reference data; and', 'employ a result of the comparison for automatic assessment of an impact applied with the impact testing device, such that whether the impact is acceptable or inadequate is determined., 'wherein the processor is configured to2. The impact testing system of claim 1 , wherein one or more sensors of the at least one vibration sensor is attached to the head.3. The impact testing system of claim 2 , wherein the one or more sensors are attached to a back of the head.4. The impact testing system of claim 3 , wherein the one or more sensors are attached to the back of the head via a hole in the back of the head.5. The impact testing system of claim 1 , wherein the at least one vibration sensor or at least one sensor of a number of vibration sensors applied to the impact testing device is an accelerometer.6. The impact testing system of claim 1 , wherein the at least one vibration sensor or at least one sensor of a number of vibration sensors is configured to obtain vibration data resulting from the impact applied with the impact testing device.7. A method for operating an impact testing system claim 1 , the method comprising:comparing data obtained from at least one vibration sensor with reference data;comparing accelerometer data with the reference data; andautomatically assessing an ...

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Номер записи: 96

21-01-2021 дата публикации

STRENGTH TESTING METHOD AND STRENGTH EVALUATION DEVICE

Номер: US20210018410A1

Автор: KAWASAKI Hiraku, NAKAMURA Hideyuki, OHMORI Mami, OHMORI Seiichi

Принадлежит: IHI INSPECTION AND INSTRUMENTATION CO., LTD.

A tensile load is applied to the test body to increase with time, and an AE wave displacement in the test body is detected (step S). From the detected AE wave, waveform data are generated for each time section (step S). For each section, from the waveform data, spectrum data are generated (step S), a peak of an intensity in the spectrum data is specified, a data part in which an intensity is at least a value of a set percentage of the peak in the spectrum data is extracted as processing target data (step S), and from the processing target data, the most frequent value of frequency gravity centers is specified (step S). The most frequent value for each section and a tensile load applied to the test body in each section are output as strength evaluation data for evaluating a tensile strength of the test body (step S). 1. A strength testing method of testing , for a tensile strength , a test body that is a fiber reinforced composite material , the method comprising:applying a tensile load to the test body so as to increase as time elapses, and detecting, at each time point, by an AE sensor, a displacement of an AE wave generated in the test body by the tensile load;generating, based on the displacement of an AE wave detected at each time point, for each section of time, waveform data that represents a displacement of the AE wave at each time point;generating, for each of the sections, from the waveform data, spectrum data representing an intensity of an AE wave at each frequency;specifying, for each of the sections, a peak of an intensity in the spectrum data;extracting, for each of the sections, as processing target data, a data part that is included in the spectrum data and in which an intensity is equal to or higher than a value of a set percentage of the peak;specifying, for each of the sections, a most frequent value of frequency centers of gravity, based on the processing target data; andoutputting, as strength evaluation data for evaluating a tensile strength of ...

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Номер записи: 97

21-01-2021 дата публикации

STRESSED ROCK PERFORATING-CHARGE TESTING SYSTEM

Номер: US20210018411A1

Автор: GROVE Brenden Michael, Manning John Douglas

Принадлежит:

Shaped charges used in wellbore perforating operations may be tested using a stressed rock perforating-charge testing system. The system includes a shaped charge testing chamber. The shaped charge testing chamber may include a loading and ejection piston and a core sample chamber. The core sample chamber is in mechanical communication with the loading and ejection piston and is sized to receive a core sample. The shaped charge testing chamber also includes a core sample stress applicator to apply stress to the core sample. Further, the system includes an ejection mechanism adjacent to the shaped charge testing chamber to provide an ejecting force on the loading and ejection piston. 1. A stressed rock perforating-charge testing system , the system comprising: a loading and ejection piston;', 'a core sample chamber in mechanical communication with the loading and ejection piston and size to receive a core sample; and', 'a core sample stress applicator to apply stress to the core sample; and, 'a shaped charge testing chamber comprisingan ejection mechanism adjacent to the shaped charge testing chamber to provide an ejecting force on the loading and ejection piston.2. The system of claim 1 , further comprising:a hydraulic yoke to maintain the core sample chamber in a testing position within the shaped charge testing chamber.3. The system of claim 2 , wherein the hydraulic yoke comprises:a yoke;a vessel cap coupled to the yoke to form a seal over the core sample chamber; andat least one hydraulic cylinder coupled to the yoke to provide pressure to maintain the removable core sample chamber in the testing position within the shaped charge testing chamber.4. The system of claim 1 , comprising:a clamshell assembly to maintain the core sample chamber in a testing position within the shaped charge testing chamber.5. The system of claim 4 , wherein the clamshell assembly comprises two clamshell sections coupled by a hinge.6. The system of claim 1 , wherein the core sample ...

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Номер записи: 98

21-01-2021 дата публикации

METHODS AND APPARATUS TO PERFORM LOAD MEASUREMENTS ON FLEXIBLE SUBSTRATES

Номер: US20210018412A1

Автор: Carbone Alexander T., Joyce Christopher, LEVESQUE PHILIPPE

Принадлежит:

An example flexible substrate testing system includes: a first substrate support structure configured to hold stationary a first portion of a flexible substrate under test; a second substrate support structure configured to hold a second portion of the flexible substrate; an actuator configured to move the second substrate support structure to fold the flexible substrate and to unfold the flexible substrate; and a load cell configured to measure a load on the flexible substrate. 1. A flexible substrate testing system , comprising:a first substrate support structure configured to hold stationary a first portion of a flexible substrate under test;a second substrate support structure configured to hold a second portion of the flexible substrate;an actuator configured to move the second substrate support structure to fold the flexible substrate and to unfold the flexible substrate; anda load cell configured to measure a load on the flexible substrate.2. The flexible substrate testing system as defined in claim 1 , further comprising a first guide configured to guide a motion of the second substrate support structure to fold the flexible substrate and to unfold the flexible substrate.3. The flexible substrate testing system as defined in claim 2 , wherein the first guide is configured to guide the motion of the second substrate support structure in accordance with a first predetermined bend radius of the flexible substrate.4. The flexible substrate testing system as defined in claim 3 , wherein the first guide is interchangeable with a second guide configured to guide the motion of the second substrate support structure in accordance with a second predetermined bend radius of the flexible substrate.5. The flexible substrate testing system as defined in claim 2 , wherein the first guide comprises a first guide plate having a groove configured to guide a cam follower attached to the second substrate support structure.6. The flexible substrate testing system as defined in ...

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Номер записи: 99

21-01-2021 дата публикации

SHEAR BOX FOR TESTING CYCLIC SHEAR CHARACTERISTICS OF A ROCK MASS DISCONTINUITY

Номер: US20210018413A1

Автор: Guo Songfeng, Huang Xiaolin, JIANG Libo, Liang Ning, Qi Shengwen, WANG Xin, ZHAN Zhifa, Zheng Bowen, ZOU Yu

Принадлежит: Institute of Geology And Geophysics, Chinese Academy Of Sciences

A shear box for testing cyclic shear characteristics of a rock mass discontinuity includes: an upper shear box including an upper semi-open cavity composed of an upper left side plate, an upper right side plate, an upper front side plate, an upper rear side plate and an upper top plate; and a lower shear box including a lower semi-open cavity composed of a lower left side plate, a lower right side plate, a lower front side plate, a lower rear side plate and a lower bottom plate; the upper shear box includes at least one first adjusting device for adjusting a space size of the upper semi-open cavity; the lower shear box includes at least one second adjusting device for adjusting a space size of the lower semi-open cavity; and the upper shear box and the lower shear box are placed opposite to each other. 1. A shear box for testing cyclic shear characteristics of a rock mass discontinuity , comprising:an upper shear box, wherein the upper shear box comprises an upper semi-open cavity composed of an upper left side plate, an upper right side plate, an upper front side plate, an upper rear side plate, and an upper top plate; anda lower shear box, wherein the lower shear box comprises a lower semi-open cavity composed of a lower left side plate, a lower right side plate, a lower front side plate, a lower rear side plate and a lower bottom plate;wherein, the upper shear box further comprises at least one first adjusting device for adjusting a space size of the upper semi-open cavity; the lower shear box further comprises at least one second adjusting device for adjusting a space size of the lower semi-open cavity; the upper shear box and the lower shear box are placed opposite to each other, the upper semi-open cavity and the lower semi-open cavity form an accommodating cavity for placing a rock mass to be tested; the at least one first adjusting device comprises a first upper isosceles trapezoid, a first lower isosceles trapezoid, a first left isosceles trapezoid, and a ...

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Номер записи: 100