Abstract: A method for improving a hemispherical dome test includes calculating a forming limit diagram (FLD) based on a plurality of simulated data associated with a sheet metal transformation technique. The method also includes performing zero friction analysis on the sheet metal transformation technique. The method also includes shifting the FLD based on the zero friction analysis.

Abstract: Disclosed is a device for testing corrosion fatigue resistance on the basis of acoustic emission. The device includes: a main machine including a supporting frame and a tensile mechanism arranged on the supporting frame; a clamping mechanism including a first clamp and a second clamp that is arranged opposite the first clamp, where the first clamp and the second clamp are both connected to the tensile mechanism, the tensile mechanism is used for driving the first clamp and the second clamp to move close to or away from each other, the first clamp is provided with an accommodation cavity for accommodating a corrosive substance, the accommodation cavity is provided with an opening that is provided on the first clamp and close to one end of the second clamp, and the first clamp can place a test specimen in the accommodation cavity when fixing the test specimen.

Abstract: An in-situ tensile device for X-ray tests is provided, including: a frame including a connecting structure, where the connecting structure is configured to fixedly connect to a testing bench of a testing device; a stretching mechanism, disposed on the frame; a clamping mechanism, including two clamping assemblies arranged opposite to each other in a length direction; where the two clamping assemblies are configured to clamp two ends of a testing piece, the testing piece is provided with a testing surface, and the testing surface is disposed on surfaces of the two clamping assemblies; the stretching mechanism is drivingly connected to the two clamping assemblies to enable the two clamping assemblies to move synchronously in one of a direction approaching each other and a direction far away from each other; and the two clamping assemblies are detachably connected to the stretching mechanism. The device can improve the accuracy of test results.

Abstract: Disclosed is a real-time nondestructive observation and two-phase seepage test system for a fracture of an in-situ fractured gas-bearing reservoir, which comprises a stress loading system, a high-voltage electric pulse fracturing operation system, a water-gas two-phase seepage system and an in-situ CT scanning system; the stress loading system comprises a pressure chamber, an axial pressure loading module and a confining pressure loading module; the high-voltage electric pulse fracturing operation system comprises a high-voltage electric pulse generation module, a high-voltage electric pulse signal monitoring module and a protection module; the water-gas two-phase seepage system comprises a water-gas pressure loading module and a flow data acquisition module; and the in-situ CT scanning system comprises a radiation source, a flat panel detector and a CT scanning detection mechanism.

Abstract: A specimen heating apparatus includes a heater unit configured to heat a test specimen held in a material testing machine, a heater holding unit configured to hold the heater unit in a set position relative to the test specimen for heating, a specimen temperature measurement unit attached to the heater unit and configured to measure temperature of the test specimen when the heater unit is in the set position, a temperature controller configured to control heating of the heater unit in response to a temperature measured by the specimen temperature measurement unit, and a thermal insulation unit configured to cover the heater unit, wherein the heater holding unit holds the heater unit in such a way that the heater unit is allowed to be brought to and removed from the set position while the test specimen is being held in the material testing machine.

Abstract: A sound management system for a vehicle is provided. The sound management system includes a vehicle window coupled to a vehicle body. The vehicle body defines an interior space of the vehicle. The sound management system also includes a laminate disposed on the vehicle window. The laminate is configured to reduce noise in the interior space of the vehicle.

Abstract: The present invention relates, in part, to an apparatus configured to test a plurality of test samples within a sample cartridge. Such an apparatus can facilitate high-throughput tensile testing of such test samples. Also described herein are methods for using such an apparatus and for testing such test samples.

Abstract: A FEA model representing a product/part with certain finite elements for metal portion, metal necking failure criteria (critical and fracture strain values defined in form of loading path diagram) and the neck's characteristics (neck's width and a profile of strain values within the width) are received in a computer system. At each solution cycle of a time-marching simulation of a deep draw metal forming process using the FEA model, following operations are performed at each integration point of every finite element: identifying major and minor strain values and corresponding directions from the computed strain values, calculating an equivalent metal necking failure strain value (?e) in the major strain direction with a formula based on corresponding critical and fracture strain values, the neck's characteristics and a characteristic dimension in the major strain direction, and determining metal necking failure, which occurs when the major strain value is greater than ?e.

Abstract: A system for testing mechanical properties of a test specimen includes a first climate controlled enclosure and a mechanical tester configured to apply a load to a test specimen within the first climate controlled enclosure. The system also includes a second climate controlled enclosure proximate to a view port of the first climate controlled enclosure. The second climate controlled enclosure is configured to enclose a camera, and the camera is configured to capture image data representing the test specimen. The image data includes multiple images that enable measurement of distortion of the test specimen responsive to the load.

Abstract: A system for assessing the distribution of shear forces at fixation points on a textile-based implant includes a tissue model, a load simulation device, and an analysis system. The tissue model includes an upper surface defining an opening therethrough and a fixation support configured to secure a textile-based implant against the upper surface at a plurality of fixation points defined along a plane of the upper surface. The load simulation device is configured to apply a load to a textile-based implant that is secured to the tissue model. A marker is disposed on the fixation support at one or more of the plurality of fixation points. The analysis system is configured to calculate a shear force vector at each of the fixation points where a marker is disposed in response to the load applied by the load simulation device.

Abstract: Systems and methods of use pertaining to a digital testing and communication system for testing the pull-out strength of a fastener member secured within a base material. The system includes a mechanical screw/actuation arrangement configured to act through a load cell to apply an increasing tensile force to the fastener. The system also includes a digital load gauge in communication with the load cell and configured to indicate the tensile force measured by the load cell. The testing and communication system may incorporate a data system, a reporting system, and a transmission system configured compile the force information into a testing report along with location information, date and time information, and/or a pass-fail indication that is transmitted to/provided upon one or more client devices located on-site or at a remote location.

Abstract: A detector mask transmits selectively a plurality of probe particles to a particle detector, the detector mask includes: a plate including a plate wall disposed in the plate and enclosing a transmission orifice arranged in a transmission profile to: transmit probe particles having a trajectory coincident with the transmission orifice, block probe particles having a trajectory external to the transmission orifice, and form a probe particle beam comprising the probe particles transmitted by the transmission orifice to the particle detector, wherein the transmission profile includes a sector, a semi-circle, an annular sector, or a combination including at least one of the foregoing first transmission profiles.

Abstract: A system includes: a tension member having a first end and a second end, where the first end of the tension member is connected to a first loading member and the second end of the tension member is connected to a second loading member; a first actuator configured to translate the first loading member, such that a tensile load is applied to the tension member along a first direction; a second actuator configured to translate the second loading member in two or more second directions that are substantially transverse to the first direction; and a control system that is configured to control the second actuator, such that the second loading member oscillates between the two or more second directions, where the oscillation of the second loading member causes the tension member to vibrate at a frequency.

Abstract: A copper foil for producing graphene including Cu having a purity of 99.95% by mass or more.

Abstract: Devices and methods are provided for testing weld strengths of a test coupon joint. A test coupon is positionally fixed to a base of the testing device. A punch assembly having a head portion is provided so as to exert an axial force against an upright part of the test coupon to thereby determine weld strength between the planar and upright parts of the test coupon (e.g., a maximum force at which weld failure occurs).

Abstract: A grasp assist system includes a glove and a flexible sleeve. The glove includes a digit such as a finger or thumb, a force sensor configured to measure a grasping force applied to an object by an operator wearing the glove, and adjustable phalange rings positioned with respect to the digit. A saddle is positioned with respect to the finger. A flexible tendon is looped at one end around the saddle. A conduit contains the tendon. A conduit anchor secured within a palm of the glove receives the conduit. The sleeve has pockets containing an actuator assembly connected to another end of the tendon and a controller. The controller is in communication with the force sensor, and calculates a tensile force in response to the measured grasping force. The controller commands the tensile force from the actuator assembly to tension the tendon and thereby move the finger.

Abstract: A method and system for determining creep capability of turbine components is provided. A plurality of turbine components are manufactured from a material having known creep characteristics. Each of the plurality of turbine components is subjected to at least one of tensile stress, centrifugal stress and thermal stress, until a measurable amount of creep is acquired. The turbine components so tested are compared against known creep characteristics for the material used in the components. Components exhibiting an amount of creep greater than a predefined amount of creep will be separated from the plurality of turbine components and not placed into service.

Abstract: A horizontal resistance of an underwater pile is measured using a horizontal load applying apparatus which applies a horizontal load to the underwater pile to measure a horizontal resistance of the underwater pile by changing a direction of a penetration force generated when a suction pile penetrates an underwater ground.

Abstract: A system for and method of stretching a membrane is provided. The system has a top plate and a bottom plate that are in parallel with each other and a plurality of flexible v trusses. The top plate is configured to move vertically. The v trusses are placed in circle and have arms pointing to the center. There is a clamp for each arm for clamping a membrane. When external force is applied to push the top plate towards the bottom plate, the force bends the trusses, which is translated to the horizontal displacement of the trusses with arms. As the trusses move outwards, the clamped membrane is stretched.

Abstract: A method for testing a batch of material used to obtain layers of fibres includes taking a specimen from the batch of material, exerting a tensile force on the specimen, heating the specimen so as to relax the fibres if the specimen contains stresses, after a predetermined period of time, no longer heating and no longer exerting the tensile force on the specimen, measuring a residual extension of the specimen which corresponds to a variation in length of at least a part of the specimen in the direction of the tensile force, before and after the tensile force, and considering the batch of material not to be compliant if the residual extension exceeds a given threshold.

Abstract: A cell grabber has a unitary structure including a transparent grabber head at a terminus thereof and an elongated mounting portion extending therefrom for attachment to a force transducer. The grabber head has a planar or concave bonding surface which is coated with an adhesive film to secure the specimen, especially single cells, for tensile measurements. The cell grabber may be used in connection with auxotonic, isometric or isotonic force measurement systems.

Abstract: Methods are disclosed relating to the assessment of fatigue damage in objects that include for example, subjecting a fatigued object to a cyclic mechanical stress, measuring a rate of temperature rise in the fatigued object, and assessing a degree of fatigue of the fatigued object based on the rate of temperature rise in the fatigued object. Methods of measuring internal structural characteristics and methods of correlating fatigue damage to results from excitation tests are also taught.

Abstract: A mobile anchor tester for testing an earth anchor or a deadman or any other suitable assembly. A mobile system is provided for testing in-ground anchors, the system including a mobile platform, such as a trailer or the bed of a pickup truck having a horizontal support surface spaced above the ground. A pair of adjustable leg assemblies are provided engaging the rear end of the mobile anchor tester. The legs are adjustable, typically having hydraulic cylinders engaged therewith. The adjustable leg assemblies will extend from the back or rear end of the mobile platform to the ground. An anchor testing assembly engaged with the horizontal support surface on the mobile platform has a cable at the removed end thereof. The cable includes a hook to engage the in-ground anchor.

Abstract: The invention relates to a method for checking ceramic ball heads (3) for hip-joint prostheses which have a receiving space (8) with a conical side face with a clamping cone angle ? and a cone inlet (7) and are subjected to a pressure in order to check areas of the receiving space (8). To ensure that all the checked ball heads (3) also remain functionally ready for relevant, oblique in vivo load situations without suffering damage, it is proposed that only the area of the cone inlet (7) is subjected to a radial force perpendicular to the longitudinal axis of the ball head (3).

Abstract: A cable test bench for testing a test cable to establish service life, replacement age, number of flex cycles, and/or winding behavior, has a deflection system including at least one deflector roll to deflect the test cable, one test cable drive to wind and unwind the test cable via the deflection system, and one test load to load the test cable. The cable test stand has an additional cable test drive for winding and unwinding a safety cable and/or the named test cable, and a control device for controlling the additional cable drive and/or the test cable drive in a manner wherein the two are adjusted to each other, in such a manner that the load of the test cable can be adjusted differently for different test cable segments and/or different winding directions and/or different winding cycles and/or different phases of a winding cycle.

Abstract: A measuring device linked to a conveyor for transporting a flexible glass is provided. The measuring device includes a base, a first roller, and at least one second roller. The first roller disposed on the base moves back and forth along a first axis. The second roller disposed on the base moves back and forth along a second axis. The flexible glass enters the conveyor passing through the second roller and the first roller. An operation method of the measuring device is also provided.

Abstract: A padeye tester is used for testing the condition of padeyes on underwater structures. The padeye tester has a frame having feet to engaged with an underwater structure, and a hook for engaging with a pad eye. The hook is moved under hydraulic pressure to provide a tensile force on the padeye, and the response to this tensile force indicates the padeye condition.

Abstract: An apparatus for load testing a coupon may include a test frame and a pair of spaced apart load balancing assemblies connected to the test frame, each load balancing assembly of the pair of load balancing assemblies including a load leveling mechanism connected to the test frame and a plurality of spaced apart load plates, each load plate of the plurality of load plates having a first end pivotably connected to the load leveling mechanism and a second end, the second end of each load plate including a friction holder configured to frictionally engage an end of the coupon, wherein at least one load balancing assembly of the pair of load balancing assemblies is movable along an axis of movement with respect to an opposed load balancing assembly to communicate a load to the coupon.

Abstract: The present invention relates to apparatus and method for evaluating the development of PS during polymerization of dental restorative composites, which includes using a tensometer for measuring deflection of a calibrated cantilever beam induced by PS and calculating PS from the measured deflection. A tensometer according to an embodiment of the present invention can be used to quantify PS at varying beam locations and heights, and determine trend in PS development as a function of beam length. More importantly, in the present invention, the development of polymerization shrinkage and the elastic modulus can be simultaneously obtained in real time.

Abstract: A horizontal resistance of an underwater pile is measured using a horizontal load applying apparatus which applies a horizontal load to the underwater pile to measure a horizontal resistance of the underwater pile by changing a direction of a penetration force generated when a suction pile penetrates an underwater ground.

Abstract: A method and device for testing the tensile stress in tension elements of a tension element cord utilizes a measuring gage which is clamped between two tension elements of the tension element cord. The gage establishes a reference point relative to a fixed point stationary with respect to the tension element cord. The gage extends horizontally between two vertically extending length portions of the two tension elements. Then it is determined whether the reference point of the measuring gage is shifted with respect to the fixed point in the horizontal direction, wherein such a shift is dependent on a difference in the tension stresses in the two tension elements.

Abstract: In one aspect, an apparatus for measuring a tension force on a net cord of a sports net is disclosed. The apparatus may include a housing configured to connect to a static post. The apparatus may also include a slidable member and attachment members. The attachment members may be configured to engage a portion of the net cord. A resilient member inside the housing may be connected to the slidable member, and an indicator member may be connected to the slidable member within the housing. The slidable member may be configured to move within the housing in response to and by a distance proportional to an amount of tension force on the net cord. The indicator member may be connected to the slidable member such that a portion of the indicator member may be exposed through a slotted opening defined in the housing.

Abstract: A device for testing tension between the jaws of a meter socket in an electric meter base comprising an aluminum blade having dimension similar to a blade of an electric meter designed to fit in the meter socket jaw, the device further comprising a handle having a proximal end and a distal end, the blade rigidly supported within the distal end, the handle having a weight which is distributed along the handle so that sufficient torque is exerted on the blade when the blade is inserted in a meter socket to be tested that the device rotates downwardly if there is insufficient tension. A method of testing tension in a meter socket using the device is also disclosed.

Abstract: A method of determining a wrap force or payout percentage at which to wrap a load with packaging material may include dispensing packaging material. The method may also include forming a tear in a portion of the packaging material. The method may further include identifying a first payout percentage at which the tear exhibits a first behavior. The method may also include identifying a second payout percentage at which the tear exhibits a second behavior. The method may further include selecting a third payout percentage between the first payout percentage and the second payout percentage, for wrapping the load.

Abstract: Devices and methods for testing cement include: a pressure vessel with a sample container inside an interior working volume of the pressure vessel, the pressure vessel configured to supply a first pressurized fluid to control a pore pressure of a cement sample and to supply a second pressurized fluid to lateral exterior surfaces of the sample container to provide a confining pressure that can be different than the pore pressure.

Abstract: A testing apparatus for characterizing a tension strength of a fillet bond of a test specimen may include a lower fixture and an upper fixture. The test specimen may include a skin component bonded to a stiffener component. The lower fixture may maintain the stiffener component in a fixed position. The upper fixture may engage the skin component at a pair of discrete engagement locations on opposite sides of the fillet bond. The upper fixture may be mechanically coupled to a gimbal joint and may substantially isolate the filet bond from asymmetric bending during application of a tension test load to the fillet bond.

Abstract: A biaxial tensile testing machine performing a tensile test of a test piece by stretching the test piece in four directions along two axes perpendicular to each other includes: first and second turntables which are disposed so as to be parallel to each other and relatively rotatable about a rotary axis along the planer direction thereof; first to fourth link mechanisms which are provided at 90° intervals in the circumferential direction about the rotary axis so that one ends of respective members of a pair of members are rotatably connected to each other, and the other ends of respective members of the pair of members are attached across the first and second turntables; and first to fourth test piece holding units which are respectively attached to the first to fourth link mechanisms and hold the test piece.

Abstract: A measuring device linked to a conveyor for transporting a flexible glass is provided. The measuring device includes a base, a first roller, and at least one second roller. The first roller disposed on the base moves back and forth along a first axis. The second roller disposed on the base moves back and forth along a second axis. The flexible glass enters the conveyor passing through the second roller and the first roller. An operation method of the measuring device is also provided.

Abstract: A method and system for determining creep capability of turbine components is provided. A plurality of turbine components are manufactured from a material having known creep characteristics. Each of the plurality of turbine components is subjected to at least one of tensile stress, centrifugal stress and thermal stress, until a measurable amount of creep is acquired. The turbine components so tested are compared against known creep characteristics for the material used in the components. Components exhibiting an amount of creep greater than a predefined amount of creep will be separated from the plurality of turbine components and not placed into service.

Abstract: The correlation between the aggregation structure of inorganic fillers such as silica microparticles in silicone rubbers and tensile strength and tear strength still has not been elucidated. The purpose of the invention is to provide a curable silicone rubber composition with which a silicone rubber of superior tensile strength and tear strength can be obtained. The invention provides a curable silicone rubber composition that is characterized in that the aggregate size of the inorganic filler prior to extending as determined by synchrotron X-ray diffraction measurement is 20-25 nm and the maximum value for the orientation coefficient of the curable silicone rubber composition when drawn as determined by synchrotron X-ray diffraction measurement is 0.25-0.35.

Abstract: Generally, the subject matter herein relates to detecting the presence of weak BEOL sites in a metallization system. One disclosed method includes performing a lateral force test on a pillar bump formed above a metallization system of a semiconductor chip, which includes contacting the pillar bump with a test probe while moving the test probe at a substantially constant speed that is less than approximately 1 ?m/sec along a path that is oriented at a substantially non-zero angle relative to a plane of the metallization system. Furthermore, the test probe is moving substantially away from the metallization system so that a force imposed on the pillar bump by the test probe has an upward component that induces a tensile load on the metallization system. The disclosed method also includes determining a behavioral interaction between the pillar bump and the metallization system during the lateral force test.

Abstract: A testing apparatus for characterizing a tension strength of a fillet bond of a test specimen may include a lower fixture and an upper fixture. The test specimen may include a skin component bonded to a stiffener component. The lower fixture may maintain the stiffener component in a fixed position. The upper fixture may engage the skin component at a pair of discrete engagement locations on opposite sides of the fillet bond. The upper fixture may be mechanically coupled to a gimbal joint and may substantially isolate the filet bond from asymmetric bending during application of a tension test load to the fillet bond.

Abstract: A test apparatus includes a first surface configured to apply a linear force in two directions and a first attachment assembly configured to secure a first end of a cable to the first surface. The first attachment assembly is further configured to permit two degrees of rotational freedom. The test apparatus also includes a second surface, opposite the first surface, and a second attachment assembly configured to secure a second end of the cable to the second surface. The apparatus facilitates testing of a bending force and a kink force associated with the cable.

Abstract: The present invention relates to test weights for testing the load capacity of a crane. More specifically, the present invention provides a novel system and approach simple and efficient crane load testing using solid weights. Previous methods of testing crane load capacity often require significant time to configure and reconfigure the apparatus. The system of the present invention increases efficiency by significantly reducing this configuration time. The system comprises a plurality of stackable test weights, and a lifting fixture specifically designed for the system. A cantilever structure located on two opposing sides of the test weight enables the lifting fixture to first be quickly secured underneath of said structure, and then lift that particular unit as well as any units surmounting that unit. A novel block lock system integrated into each weight unit enables self-alignment and securing of each weight as it is placed onto the weight stack.

Abstract: A method of fatigue testing a component comprising the steps of machining a channel of predetermined depth and predetermined width in a surface of a component, applying a salt solution into the channel in the surface of the component and heating the component to a suitable temperature to evaporate the solvent from the salt solution to deposit the salt in the channel in the surface of the component, placing the component in an atmosphere containing air and sulphur dioxide at a predetermined temperature for a predetermined period of time to precondition the grain boundaries, and fatigue testing the component. The method is useful for determining the fatigue life of gas turbine engine discs or gas turbine engine rotor blades particularly the firtree shaped disc posts or the firtree shaped rotor blade roots.

Abstract: A method for determining fatigue strength of engine components, comprising the steps of -providing an engine component, -loading at least part of the component to a level below its tensile strength and measuring its resulting deformation, -determining at least one magnitude on the basis of the load applied and the deformation measured, -providing a predetermined relationship between measured fatigue strength of components and the aforesaid at least one magnitude determined on the basis of the ratio between load applied to engine components and their deformation, -determining the fatigue strength of the engine component provided,on the basis of the at least one magnitude determined and the predetermined relationship.

Abstract: The present invention relates to methods for non-destructive quantitative determination of the internal microstresses of type II and/or III which are based on subtraction of the maximum values of the load stress dependency of the maximum Barkhausen noise amplitudes on a test piece before and after hardening of the test piece in specific thermal hardening states. The present invention hence enables independent determination of the internal microstress of type II or III, simultaneous and resolved determination of the internal microstresses of type II and III and also determination of the sum of both types of internal microstresses.

Abstract: The invention relates to a triaxial cell for testing geomaterials on specimens. The triaxial cell has at least one piston for subjecting a specimen to stress directed along the longitudinal axis of the specimen. Hydraulic means are provided for subjecting the lateral wall of the specimen to a stress, under the pressure of a fluid. The cell has at least one sealed test chamber-in which the specimen is placed, and a circuit for the controlled pressurization of said test chamber with a fluid, called the pressurizing fluid, and for the controlled draining of said fluid therefrom. The cell has mechanisms for subjecting the specimen to a tensile force, which are configured for removably fastening it between two attachments intended to move apart or closer together under the action of the piston so as to subject said specimen to longitudinal stress or on the contrary to remove the load therefrom.

Abstract: A method and apparatus for investigating subsurface properties of sediment, soil, snow, food stuff and other soft materials incorporates a probe head, preferably in the form of a coil spring that functions as a screw thread, which moves into the soil, snow, sediment, food stuff or other soft material, isolates a column of the material and applies tension to that column while measuring the applied force with a force sensor.

Abstract: A micromachined or microelectromechanical system (MEMS) based push-to-pull mechanical transformer for tensile testing of micro-to-nanometer scale material samples including a first structure and a second structure. The second structure is coupled to the first structure by at least one flexible element that enables the second structure to be moveable relative to the first structure, wherein the second structure is disposed relative to the first structure so as to form a pulling gap between the first and second structures such that when an external pushing force is applied to and pushes the second structure in a tensile extension direction a width of the pulling gap increases so as to apply a tensile force to a test sample mounted across the pulling gap between a first sample mounting area on the first structure and a second sample mounting area on the second structure.