Described are a test device, a multi-specimen test fixture star and a multi-specimen test fixture. The test device includes a bath chamber that is automatically replenished with bath liquid throughout an extended test period. The multi-specimen test fixture star is non-circularly symmetric and can be used, for example, in a rectangular bath chamber to hold a greater number of test specimens than a circularly symmetric test fixture star. The multi-specimen test fixture includes, in part, a multi-specimen test fixture star and a shaft having one or more keyways and enables the test fixture star to be repositioned along the shaft without loss of rotational alignment to the shaft.

A device and a method for testing tensile resistance of multiple-row grouped pillars in an inclined goaf are provided. The bottoms of stands of the device are connected with a testing machine base, and the tops of the stands of the device are connected with a transverse frame; an upper slideable clamping seat and a lower slideable clamping seat are semi-cylindrical blocks, multiple lower loading jaws that are positioned to have a same central line are arranged on the lower slideable clamping seat, each of the lower loading jaws is opposite to a corresponding one of the upper loading jaws, the lower loading jaws are welded to the lower slideable clamping sea to test the tensile resistance of samples together; the upper part of the upper slideable clamping seat is connected with an upper pressure disk, and the lower slideable clamping seat is connected with a lower pressure disk.

The present invention relates to alternating stress fatigue testing equipment. The alternating stress fatigue testing equipment includes a pedestal on which linear guide rails are arranged; a deflection loading device which is arranged on the pedestal and configured to, in response to a clamped to-be-measured object being driven to slide to a first position, enable the to-be-measured object to be bent to a target degree and keep the to-be-measured object after the to-be-measured object is bent to the target degree, wherein the deflection loading device is rotatably connected to the to-be-measured object; two hinged shaft supports which are arranged on the linear guide rails, wherein the hinged shaft supports are symmetrically arranged about a longitudinal center line of the deflection loading device, connected to both ends of the to-be-measured object respectively, and configured to be adjusted obliquely to adapt to the bending of the to-be-measured object to the target degree.

The present invention relates to alternating stress fatigue testing equipment. The alternating stress fatigue testing equipment includes a pedestal on which linear guide rails are arranged; a deflection loading device which is arranged on the pedestal and configured to, in response to a clamped to-be-measured object being driven to slide to a first position, enable the to-be-measured object to be bent to a target degree and keep the to-be-measured object after the to-be-measured object is bent to the target degree, wherein the deflection loading device is rotatably connected to the to-be-measured object; two hinged shaft supports which are arranged on the linear guide rails, wherein the hinged shaft supports are symmetrically arranged about a longitudinal center line of the deflection loading device, connected to both ends of the to-be-measured object respectively, and configured to be adjusted obliquely to adapt to the bending of the to-be-measured object to the target degree.

A pressure testing system for a hollow component, such as a component formed by a filament winding system and method, includes an outer frame defining a base, and a support mechanism coupled to the base and having at least one movable platform for supporting the hollow component within the outer frame.

A pressure testing system for a hollow component, such as a component formed by a filament winding system and method, includes an outer frame defining a base, and a support mechanism coupled to the base and having at least one movable platform for supporting the hollow component within the outer frame.

The present disclosure relates to a system and method for measuring physical properties of an electrode specimen. According to the present disclosure, it is possible to suppress a slipping phenomenon of an electrode specimen and prevent disconnection of a gripping portion during a tensile test for the electrode specimen by forming a tape on the gripping portion of the electrode specimen and forming a grid pattern on the surface of a pressing jig.

A test apparatus comprises a probe movably mounted relative to a carrier. The probe comprises an end portion with a surface area of about 5 mm.sup.2 or less. The test apparatus can be used in methods of determining a crush strength of an edge of a substrate. Methods can comprise aligning the probe with a test location of the substrate at a predetermined angle relative to a probe axis. Methods can further comprise applying a mechanical force to the test location with the probe in the direction of the probe axis. Also, methods can comprise increasing the mechanical force applied by the probe until the substrate cracks or a predefined force applied by the probe is reached. Based on the mechanical force applied by the probe, a crush strength of an edge can be determined.

A test apparatus comprises a probe movably mounted relative to a carrier. The probe comprises an end portion with a surface area of about 5 mm.sup.2 or less. The test apparatus can be used in methods of determining a crush strength of an edge of a substrate. Methods can comprise aligning the probe with a test location of the substrate at a predetermined angle relative to a probe axis. Methods can further comprise applying a mechanical force to the test location with the probe in the direction of the probe axis. Also, methods can comprise increasing the mechanical force applied by the probe until the substrate cracks or a predefined force applied by the probe is reached. Based on the mechanical force applied by the probe, a crush strength of an edge can be determined.

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.