Abstract: The present invention may be used for measuring the tension in an elongated rod like body that may be fastened at an anchor end to an anchor element and that may be disposed at an accessible end relative to a securing element. A representative bolt may be secured at a first end to an accessible end of the rod like body. A housing may be positioned over the representative bolt to abut the securing element at an open first end and to allow the representative bolt to extend outwardly through a hole in a walled second end. A nut may be threaded on the representative bolt and tightened against the walled second end. A transducer may be attached to a second end of the representative bolt. The transducer may be activated to measure the length of the representative bolt. A data base of bolt length and bolt stress measurements may be used to correlate the stress level of the elongated rod like body.

Abstract: A mounting assembly for adjusting the position of an electronic module along a first axis, a second axis, and a third axis, in which the first, second, and third axes are all perpendicular to each other, includes a first adjustment block, a second adjustment block, and a third adjustment block. The first adjustment block is movable along the first axis and the second axis and is mounted against movement along the third axis. The second adjustment block is coupled to the first adjustment block, is movable along the second axis, and is mounted against movement along the first and third axes. The third adjustment block is disposed between the first adjustment block and the second adjustment block, is movable along the second and third axes, and is mounted against movement along the first axis.

Abstract: A method of testing metal samples is provided to simulate stretch flanging of trimmed surfaces. A sample having planar sides and a sidewall extending between the planar sides is placed in a fixture so that the planar sides are confined. The sidewall of the sample is bent about a curved surface while restricting buckling out of a planar area. One testing machine is disclosed in which a test specimen is clamped in a die with a nesting slot while a punch bends a sample against a forming surface that has a radius. In another testing machine, a mandrel and clamping element engage the planar sides of the sample while first and second bending members engage first and second end portions to bend one of the sidewalls of the sample about the mandrel.

Abstract: A system for sulfide stress cracking testing comprises an enclosed testing chamber including a fluid bath comprising a liquid saturated with hydrogen sulfide gas. In addition, the system comprises a test fixture disposed in the testing chamber and at least partially submerged in the fluid bath. The test fixture includes a housing having an internal chamber in fluid communication with the fluid bath and a test assembly disposed in the internal chamber. The test assembly comprises a first upper support and a second upper support, a first lower support and a second lower support, and a first platen engaging each of the upper supports and adapted to transfer an applied vertical load to the upper supports. Further, the system comprises a test specimen mounted in the test assembly between the upper supports and the lower supports.

Abstract: The invention provides a stress micro mechanical system for measuring stress and strain in micro- and nano-fibers tubes, and wires as well as for measuring the interface adhesion force and stress in nanofibers and nanotubes embedded in a polymer matrix. A preferred system of the invention has a substrate for supporting a MEMS fabrication. The MEMS fabrication includes freestanding sample attachment points that are movable in a translation direction relative to one another when the substrate is moved and a sample is attached between the sample attachment points. An optical microscope images surfaces of the MEMS fabrication. Software conducts digital image correlation on obtained images to determine the movement of the surfaces at a resolution much greater than the hardware resolution of the optical microscope.

Abstract: An apparatus for measuring load acting on pipe supports, the apparatus including a load cell which includes a contact portion contacting a pipe, and a measuring portion for measuring load acting from the pipe; and a gap sensor which measures a gap between the pipe support and the pipe, which is generated by a movement of the contact portion, wherein the load acting on the pipe support is measured based on the load measured by the load cell and the gap measured by the gap sensor.

Abstract: Prostheses are fatigue tested using an apparatus under simulated physiological loading conditions. A fluid housing defines an entrance chamber having fluid outflow ports and an exit chamber having opposing fluid inflow ports and a central flow conduit in communication with the entrance chamber and the exit chamber. A plurality of housing tubes into which prosthesis are deployed may extend between the fluid outflow and inflow ports. Alternatively, tubular prostheses may be connected directly between the inflow and outflow ports. A reciprocating linear drive pump having a flexible diaphragm is provided to cyclically pressurize fluid through a common closed loop within the fluid housing and drive the pressurized fluid through the prosthesis being tested. The test system is capable of rotation independent of the motor drive for accurate diameter measurements of all test samples at elevated frequencies.

Abstract: A torque transfer coupling includes a shaft and a first second set of hydraulic devices. Each hydraulic device of the first set of hydraulic devices has a first end operably connected to a first end of the shaft, wherein the hydraulic devices of the first set of hydraulic devices are disposed about an axis of the shaft. Each hydraulic device of the second set of hydraulic devices has a first end operably connected to a second end of the shaft, and wherein the hydraulic devices of the second set of hydraulic devices are disposed about the axis of the shaft. Each hydraulic device can include a piston and cylinder assembly wherein extension and retraction of each piston of each hydraulic device is generally tangential to a portion of a circle encircling the shaft.

Abstract: Apparatus for fatigue or mechanical friction damping measurement testing a specimen the apparatus including a body having opposing arms defining between them a space for receiving the specimen, one of the opposing arms having a fixture for securing the specimen, another of the opposing arms having a further fixture for securing the specimen, the fixture and the further fixture being adjustable to increase or decrease the relative distance therebetween, wherein the body includes an assigned vibration location to which excitation signals are applied during testing.

Abstract: A load pin includes a main body, a plurality of recesses, and a plurality of sensor pockets. The main body has a plurality of loading surfaces and a plurality of relief surfaces formed therein. Each loading surface is disposed between two of the relief surfaces. The recesses are formed in and extend at least partially around the outer surface of the main body. Each recess has a substantially round inner surface, is formed in a different one of the relief surfaces, and is disposed between a different pair of loading surface. The sensor pockets are formed in the outer surface, extend partially into the main body, are disposed between a pair of loading surfaces, and extend through the recess that is disposed between the same pair of loading surfaces.

Abstract: A measuring apparatus is capable of separately measuring at least one of the purely resistive component and the reactance component of a measured circuit. The measuring apparatus applies an AC voltage to the measured circuit and detects a current flowing in the measured circuit. When doing so, a first detection signal whose amplitude changes in accordance with an amplitude of a real component of the current and a second detection signal whose amplitude changes in accordance with an amplitude of an imaginary component are generated. The at least one of a purely resistive component and a reactance component of the measured circuit is then calculated using the first detection signal and the second detection signal.

Abstract: A testing apparatus includes a support mechanism, a pushing device and a clamping device. The pushing device includes a guiding member, a driving member moveably attached to the guiding member, and a resilient component located between the guiding member and the guiding member. The clamping device is attached to the driving member, and secures a product. The driving member and the clamping device deforms the resilient component in a first direction, and the resilient component biases the driving member and the clamping device in a second direction, that is opposite to the first direction.

Abstract: A hinge durability testing device for testing the durability of a hinge hinging a cover with a main body, includes a main body holder holding the main body, a cover holder holding the cover, the cover holder hinged to the main body holder, the cover holder comprising two support rods and a connecting rod; each support rod comprising a first surface facing the other support rod, and a second surface adjacent to the first surface; each first surface defining a first sliding groove, and each second surface defining a second sliding groove comminuting with corresponding first sliding groove; two connecting elements, each connecting element located on one end of the connecting rod and slidably mounted in one of the first sliding grooves; a plurality of locking elements, each locking element retained on one of the connecting elements and slidably mounted in one of the second sliding grooves.

Abstract: Provided is a method for testing adhesion. The method includes forming thin films on a substrate; attaching an elastic plate to the substrate, wherein the elastic plate has a larger elastic coefficient than the substrate; and performing an adhesion test on the thin films using an adhesion test apparatus.

Abstract: The disclosure relates to a specimen holder for a grip used in materials, or similar testing. The user can position a specimen or testing sample within the open jaw, and then remove his or her hands to a safe location before activating the grip to grip the specimen.

Abstract: An arrangement of elements which are used to restrain and deflect a pipe specimen to a prescribed form with precisely controlled loads. A rigid frame includes a movable pipe bending form to which one end of a pipe specimen is connected and a rotating table to which the second end of the pipe specimen is connected. Means for assessing the drive torque used to draw the pipe specimen over the pipe bending form is provided in the form of a load cell. The rotating table is used in combination with a travelling pipe end truck foundation to generate a bending moment in the pipe specimen in the same plane as the pipe specimen is being bent by the pipe bending form. By the use of precise loads on the pipe specimen, computer analysis of the simulated reeling of the given pipe construction will produce predictions of the reeling tension, shear, and bending moment in the pipe at the point of the travelling pipe end as this point on the pipe approaches contact with the reel.

Abstract: Disclosed herein is an apparatus and a method to use such an apparatus for visualizing the contraction stress from curable materials. Particularly, a simple test device has been designed and fabricated and a method of using such a device, which allows a user to easily distinguish the curable materials that can generate contraction stress in different magnitudes. More specifically, the present disclosure provides a simple and effective way to make the complicated contraction stress due to polymerization (curing or setting) visualizable and audible.

Abstract: Provided is a jig for a compression test in a heating furnace capable of variously changing boundary conditions such as a both-end hinge, a both-end fixing, or one-end hinge and one-end fixing through simple attachment and detachment of a holder. Therefore, it is possible to easily implement hinge and fixing conditions of a test sample installed in a heating furnace using one jig, remarkably reducing time and cost consumed to install the test sample.

Abstract: Systems and methods for performing structural tests on wind turbine blades are disclosed herein. A system in accordance with a particular embodiment includes a test stand positioned to carry a test article that includes at least a portion of a wind turbine blade. The system can further include first and second reaction anchors movably positioned relative to the test stand. A first generally horizontal force link is attached to the first reaction anchor and coupleable to the test article to apply a first horizontal load to the test article. A second generally horizontal force link is attached to the second reaction anchor and is coupleable to the test article to apply a second horizontal load to the test article. The test stand can be positioned to apply a test stand force to the test article equal and opposite to the sum of the first and second horizontal loads.

Abstract: The present disclosure provides a device for stress corrosion testing of materials, e.g., a test specimen, in corrosive materials. It also provides a testing method that is easy to employ in a consistent and controlled manner and also makes efficient use of the potentially corrosive materials.

Abstract: An integrated machine for making, in laboratory, slabs made of a controlled-compaction bituminous mix in a mold and for making wheel tracking tests on the same, the compaction is performed by two idle disks which slide and press the side extensions of an array of vertical plates overlapping the mix, the wheel tracking test is performed by a wheel located between the disks; after having removed the array of plates, the wheel can be presented to the mix, since the disks are located at a distance greater than the mold width.

Abstract: A work holder capable of measuring the amount of distortion occurring in a part as the part is machined, processed, treated, or otherwise operated upon and methods of using the same for quality control and process monitoring purposes. Indirect measurement of the distortion occurring in the part eliminates the need to individually strain gauge each part.

Abstract: Provided is a fixing jig including: a base configured to be mounted to a load axis of a fatigue testing device and including an accommodating recess portion for accommodating a portion to be held of a test piece; a pressing member disposed so as to be supported in the accommodating recess portion and configured to come into surface contact with an end surface of the test piece; and an insert nut configured to be threadedly engaged with a male screw portion of the portion to be held of the test piece. The fixing jig further includes a fastening flange including a hole portion for loosely inserting the test piece therethrough and a flange portion configured to come into contact with the insert nut, for holding the test piece in the accommodating recess portion via the insert nut so that the end surface of the test piece is pressed against the pressing member supported by the base.

Abstract: The present invention provides a plate for mass spectrometry comprising a support and a PVDF-containing coating (that is, a PVDF-deposited thin layer) thereon, and a method of preparing a plate for mass spectrometry, which comprises coating the support surface with PVDF. The present invention also provides a method of analyte identification comprising subjecting an analyte-containing sample to gel electrophoresis to separate the analyte, blotting the separated analyte from the gel to the above-described plate for mass spectrometry, and subjecting the plate to mass spectrometry, whereby the transferred analyte is analyzed.

Abstract: A strain sensor device for measuring loads on aircraft landing gear. This is done by measuring strains in the lower end of the strut, by which we infer the loading in the entire landing gear structure. These strains can be very large (as high as 10,000 microstrain) and can be imposed in numerous random directions and levels. The present invention includes a removable sensor assembly. An electromechanical means is presented that can accommodate large strains, be firmly attached to the strut, and provide good accuracy and resolution.

Abstract: Disclosed is a local antistress test platform, comprising a test frame and a weight test rod for providing a local stress to a tested panel by adding weights. The local antistress test platform further comprises a movable test hole table for fixing the weight test rod; the movable test hole table is removably jointed to the test frame. The present invention also relates to local antistress test apparatus. The local antistress test platform and the test apparatus can easily locate the antistress test position and be adaptable to panel test for panels of different sizes.

Abstract: A substantially flexible implant holder for holding a substantially tubular implant structure during fatigue testing of the implant structure, the implant holder having a substantially elongate cavity for occupation by the tubular implant structure and a cavity-surrounding part which extends from at least a first longitudinal end of the cavity to at least a second longitudinal end of the cavity, the cavity-surrounding part having a stiffness which gradually changes from a relatively high stiffness adjacent each of the longitudinal ends of the cavity to a relatively low stiffness adjacent a middle portion which is situated between the two longitudinal ends of the cavity.

Abstract: Disclosed herein is an apparatus and a method to use such an apparatus for visualizing the contraction stress from curable materials. Particularly, a simple test device has been designed and fabricated and a method of using such a device, which allows a user to easily distinguish the curable materials that can generate contraction stress in different magnitudes. More specifically, the present disclosure provides a simple and effective way to make the complicated contraction stress due to polymerization (curing or setting) visualizable and audible.

Abstract: A testing device suitable for testing an electronic device is provided. The electronic device has a first body and a second body, wherein the first body is suitable for rotating relative to the second body. The testing device includes a carrying platform, a fixed frame, a clamping element, a first driving element, and a second driving element. The carrying platform carries the first body. The fixed frame is pivoted to the carrying platform. The clamping element is pivoted to the fixed frame for clamping the second body. The first driving element is disposed between the carrying platform and the fixed frame for driving the fixed frame to pivot relative to the carrying platform. The second driving element is disposed between the clamping element and the fixed frame for driving the clamping element to pivot relative to the fixed frame.

Abstract: A tester for testing a shear fastener includes: a frame; a stationary chuck connected to the frame; a linear guide comprising a slider; a movable chuck connected to the slider; a movable insert fastened to the movable chuck and having a hole for receiving a first portion of the shear fastener; a stationary insert fastened to the stationary chuck and having a hole for receiving a second portion of the shear fastener; a linear actuator for engaging the movable chuck and fracturing the shear fastener; and a load cell for determining force exerted on the shear fastener by the linear actuator.

Abstract: A limiting switch suitable for a testing device is provided. The testing device includes a fixed frame and a clamping element pivoted to each other. The limiting switch includes a first rod, a second rod, a first switching element and a second switching element. The first and second rods are fixed to the clamping element. The first and second switching elements are pivotally connected to the fixed frame. When the clamping element is pivoted along a first direction, the second rod pushes the second switching element to pivot and the first rod is moved to contact with the first switching element. When the clamping element is pivoted along a second direction opposite to the first direction, the first rod pushes the first switching element to pivot and the second rod is moved to contact with the second switching element.

Abstract: The present invention relates to a Test apparatus (10) for testing the interaction between through-thickness compression and shear in a test piece (16). The apparatus comprises first and second chocks (12, 14) arranged in use to securely retain a test piece, and first and second races (18, 20) which can be controllably urged towards each other to transmit a known force to the first and second chocks. The first and second chocks and the test piece together form a substantially cylindrical body of a first diameter and. The first and second races define therebetween a substantially cylindrical space of a second diameter for accommodating the chocks, and wherein the second diameter is greater than the first diameter.

Abstract: A loading device is provided, including a first member, a second member, a first clamping member, a second clamping member, and an actuator. The first member includes a first surface, where the first surface contacts a first side of a test piece. The second member includes a second surface, for contacting a second side of the test piece. The first clamping member includes a first clamping surface for contacting the second side of the test piece. The second clamping member is fixedly secured to the second member. The actuator exerts a predetermined force driving the second member in a first direction away from the first member, and a second direction towards the first member.

Abstract: A method is presented for characterizing properties of a specimen, such as a microstructure and a nanostructure. The method includes attaching a first end of the specimen to a first probe (204) and attaching a second end of the specimen, which is spaced apart from the first end by an intermediate portion, to a second probe that extends from a transducer (208). The method also includes causing a corresponding displacement of the specimen attached between the first probe and the second probe (224, 230). At least one parameter associated with the specimen is acquired (226, 232) during the corresponding displacement based on at least one output signal from the transducer. The properties of the specimen can be determined based on the at least one parameter (236, 238).

Abstract: 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.

Abstract: An apparatus for continuous measurement of a geomaterial is disclosed. The apparatus includes a measuring device and a flat bed operatively coupled to the measuring device. The measuring device includes a moving head configured to move in a longitudinal direction relative to a core section of the geomaterial and a first probe coupled to the moving head and configured to continuously measure a property of the core section. The flat bed includes a load actuator configured to secure the core section during the continuous measurement and axially rotate the core section, as well as a core holder assembly configured to apply confining pressure on a length of the core section.

Abstract: A stress-strain testing apparatus imposes a stress-strain on a specimen while disposed in a controlled environment. Each end of the specimen is fastened to an end cap and a strain gage is attached to the specimen. An adjusting mechanism and a compression element are disposed between the end caps forming a frame for applying forces to the end caps and thereby stress-straining the specimen. The adjusting mechanism may be extended or retracted to increase or decrease the imposed stress-strain on the specimen, and the stress-strain is measured by the strain gage on the specimen while the apparatus is exposed to an environment such as high pressure hydrogen. Strain gages may be placed on the frame to measure stress-strains in the frame that may be caused by the environment.

Abstract: A detecting device for performing fatigue tests on a pivoting piece includes a clamping module and an actuating module. The clamping module clamps the pivoting piece. The actuating module includes an elastic actuating shaft abutting the clamping module and a resilient member mounted in the elastic actuating shaft. The resilient member is adapted to push forward against spring pressure and retract by the release of spring tension so as to achieve cyclic movements in the pivoting piece.

Abstract: A hinge durability testing device for testing the durability of a hinge hinging a cover with a main body, includes a main body holder holding the main body, a cover holder holding the cover, the cover holder hinged to the main body holder, the cover holder comprising two support rods and a connecting rod; each support rod comprising a first surface facing the other support rod, and a second surface adjacent to the first surface; each first surface defining a first sliding groove, and each second surface defining a second sliding groove comminuting with corresponding first sliding groove; two connecting elements, each connecting element located on one end of the connecting rod and slidably mounted in one of the first sliding grooves; a plurality of locking elements, each locking element retained on one of the connecting elements and slidably mounted in one of the second sliding grooves.

Abstract: A permanent deformation measurement apparatus includes a worktable and a measuring device. The worktable includes a supporting surface for supporting an elastic member to be measured. The measuring device includes a base, contact member, an operating member, and a measuring member. The base is fixed on the supporting surface, and defines a guide hole substantially perpendicular to the supporting surface of the worktable. The contact member includes a push rod slidable along the guide hole to contact the elastic member. The operating member is configured for moving the push rod. The measuring member is configured for measuring a position of the push rod when the push rod is in contact with the elastic member.

Abstract: A fixture for measuring clamping forces applied by lift truck clamps has a frame and two or more load measuring assemblies which are adjustably mounted for optimal positioning between the clamps. Actual force measurements are compared to acceptable values and composite feedback is provided using at least two measurements and two comparisons. The system is particularly useful for measuring force balance for clamps having pivotable platens.

Abstract: Hydraulic section (1) comprising: a main spool (2); pressure compensation means (16) able to maintain a substantially constant pressure drop through a metering orifice (3) of said main spool (2); a first chamber (7) interposed between said main spool (2) and a first end (16a) of said compensation means (16); a second chamber (6) situated at a second end (16b) of said compensation means (16), said second chamber (6) being connectable to a feed line (Pal) from a pump (100) by means of a predefined channel (Pp) in such a way that said hydraulic section (1) operates as a priority section, or being connectable to a line (LS) for detecting the highest load pressure in such a way that said hydraulic section (1) operates as a flow-sharing section.

Abstract: A fatigue test system for repetitively deforming a substantially tubular implant structure which is within a radial range and within an axial range expandable and contractable and which has at least a first and a second end, wherein the system comprises at least a first and second part which are controllably moveable relative to each other, and a first and a second fixture assembly for fixing the first end to the first part and the second end to the second part, so that the system controls in use the position of each of the first and second end of the tubular implant structure.

Abstract: An in-situ specimen fixture particularly adapted for prestressing rod-type SNTT-type specimens comprising a tube and end cap wherein the specimen is secured at one end to the tube, and at the opposite end to the end cap. The end cap is rotatable relative to the tube, and may be fixedly secured for creating a torsional force prestressing the specimen enclosed within the tube.

Abstract: An apparatus and associated method for non-permanently fixturing an unmounted head gimbal assembly (UHGA). A backing plate has a planar body defining a plurality of contact points, and a lip extending from the body that is operably alignable with the UHGA so that a force applied against the lip transfers through the body to urge each of the contact points against the UHGA.

Abstract: The disclosure relates a safety shield for the jaws of a grip used for tensile or similar materials testing. The safety shield typically attached to the jaws and shields the jaws on two, three or four sides in order to reduce the hazard of a user placing his or her fingers between the jaws while positioning the testing sample or specimen therebetween. A user is typically able to adjust the position of the safety shield to achieve greater safety. The safety shield may be configured from planar material, such as sheet metal or plastic, or from wire material.

Abstract: The present disclosure provides a device for stress corrosion testing of materials, e.g., a test specimen, in corrosive materials. It also provides a testing method that is easy to employ in a consistent and controlled manner and also makes efficient use of the potentially corrosive materials.

Abstract: In a method of operating a material testing machine for testing a specimen, the machine has an electrically controllable actuator arranged to apply a force to the specimen. The method includes inputting a single adjustable parameter value, calculating all necessary feedback control gains therefrom, and subsequently conducting a test of the specimen.

Abstract: A test station for testing golf clubs has a clamp on the lower portion holding a shaft extending along a first axis. Sensors along that axis detect shaft vibrations torsion vibrations. Four towers are movably connected to a rail extending along the top portion of the base. Two of the towers have a first vertically adjustable shaft positioner and a device to detect forces exerted on the first shaft positioners. The other two towers also have vertically adjustable shaft positioners. The towers are used to determine stiffness, center of gravity, swing point and other properties. A drawer in the base contains a scale to measure the club length, and a pivoted stop to measure head angle.

Abstract: This invention relates to a device for mounting in a fixed mounted frame (7) on a subsea pipe comprising a locking device comprising a sensor housing (6), a spring (2) surrounding the sensor housing (6), at least one wedge (1) placed in one of the ends of the spring (2), and a edge (5a) placed in the other end of the spring (2), where the sensor housing (6) is arranged to be guided into the mounting frame (7), and that a force (13) is applied in the longitudinal axis of the sensor housing (6) so that the spring (2) is compressed and the wedge(s) (1) are spanned radial out towards the mounting frame (7) to center and support the sensor housing (6) in the mounting frame (6), the sensor housing (6) is designed to fit into the mounting frame (7).