A tensile testing fixture and a tensile testing device with improved specimen tensile stress accuracy are provided. The fixture includes a base, an adjusting mechanism disposed on the base, a floating mechanism disposed on and connected to the adjusting mechanism, a lower head disposed on and connected to the floating mechanism, and an upper head disposed above the lower head. The floating mechanism is configured to transmit a pulling force of the lower head to the adjusting mechanism. The adjusting mechanism is configured to adjust a position of the floating mechanism in a horizontal direction under the pulling force. The floating mechanism is further configured to adjust a position of the lower head in the horizontal direction, causing the lower head and the upper head to be coaxial in a vertical direction.

A tensile test fixture for quick testing of materials with low transverse strength and relatively high longitudinal strength. After the tensile test fixture is loaded into a universal testing machine, such as a two-part load frame, a first test specimen is aligned and tensile tested. Alignment of the first test specimen ensures that all consecutive test specimens are aligned within the tensile test fixture without further alignment required.

The present disclosure provides for a guide for use in a compression test, the compression test comprising loading a test sample between a first loading plate and an opposing load applied between the test sample and the first loading plate in a loading direction, the guide comprising: at least one support member, positionable between the first loading plate and the load and extending substantially parallel to the loading direction to constrain the test sample in a direction perpendicular to the loading direction, wherein, when in use, the at least one support member is positioned to define a space between the first loading plate and the support member such that when a load is applied the test sample is deformable in a direction perpendicular to the loading direction within the space.

A synchronized gripping mechanism is provided which includes coupled slider-crank mechanisms. The coupled mechanisms each include a sliding grip and an intermediate link connected by a pivotal connector. A coupler link is provided on a stationary pivot and which couples and synchronizes the two slider-crank mechanisms. Overload protection structure is provided to prevent damaging the links if one of the sliding grips encounters an off-center specimen.

A fixing jig is provided, including a supporting base, a fixing plate, and a fixing component. The supporting base includes a first upper surface. The fixing plate is disposed on the supporting base. A side of the fixing plate is pivotally connected to the supporting base and includes a second upper surface, a bottom surface, and via a hole. The fixing component presses the fixing plate on the second upper surface. The fixing jig can fix an object pending testing and allows one flexible electric circuit board of the object pending testing to be exposed outside of the fixing jig, so that when performing a pull force test, this can allow an angle between two flexible electric circuit boards to be 90 degrees, thereby improving accuracy of an experimental result.

A tensile testing fixture and a tensile testing device are provided. The fixture includes a base, an adjusting mechanism disposed on the base, a floating mechanism disposed on and connected to the adjusting mechanism, a lower head disposed on and connected to the floating mechanism, and an upper head disposed above the lower head. The floating mechanism is configured to transmit a pulling force of the lower head to the adjusting mechanism. The adjusting mechanism is configured to adjust a position of the floating mechanism in a horizontal direction under the pulling force. The floating mechanism is further configured to adjust a position of the lower head in the horizontal direction, causing the lower head and the upper head to be coaxial in a vertical direction.

An assembly for shock testing a specimen, the assembly including first and second opposing brackets and opposing lower and upper caps. The opposing brackets include lower and upper angled surfaces. The lower cap includes lower angled surfaces configured to engage the lower angled surfaces of the left and right brackets. The upper cap includes upper angled surfaces configured to engage the upper angled surfaces of the left and right brackets. The first and second brackets are configured to be drawn toward each other via fasteners, thereby wedging the lower and upper caps toward each other against the specimen.

An assembly for shock testing a specimen, the assembly including first and second opposing brackets and opposing lower and upper caps. The opposing brackets include lower and upper angled surfaces. The lower cap includes lower angled surfaces configured to engage the lower angled surfaces of the left and right brackets. The upper cap includes upper angled surfaces configured to engage the upper angled surfaces of the left and right brackets. The first and second brackets are configured to be drawn toward each other via fasteners, thereby wedging the lower and upper caps toward each other against the specimen.

A support jig for use with a testing machine applying tensile loads, the support jig includes a frame and a pair of spaced apart supports joined to the frame to provide an alignment axis. Each support is configured to releasably hold a test specimen holder on the alignment axis in a fixed spatial relationship with ends of the test specimen holders mountable to the test machine facing in opposite directions. A method of using the support jig to remotely mount the test specimen to the test specimen holders from the test machine, and then using the support jig to maintain the fixed special relationship while the test specimen holders are mounted to the test machine is also provided.

Disclosed is a material testing system that includes an output shaft configured to be moved by operation of a motor, the output shaft coupleable to a test specimen such that movement of the output shaft imparts a mechanical force on the test specimen. The material testing system includes a haptic feedback system configured to provide an operator of the material testing system haptic feedback related to a position or state of the output shaft relative to the test specimen during setup. Methods of testing using haptic feedback are also disclosed.