A testing arrangement includes a test specimen that is formed of a fiber composite that has first, second, and third groups of fiber ply layers. Each fiber ply layer is curved so as to have an elbow. The elbows are joined back-to-back at a central region to form first, second, and third arms that extend outwardly from the central region. The elbows define a space in the central region, and there is a space-filler within the space. The test specimen is mounted in a testing fixture such that the first and second arms are in four-point bend loading and the third arm is oriented vertically. The testing fixture is actuatable to apply an actuated load. There is an applied load on the third arm. The applied load and the actuated load cause stress in the space-filler for evaluating mechanical behavior of the space-filler.

A system and related methodology for inflicting structural impact damage to an article are disclosed. Certain embodiments of the system include: a main support body; a guide tube having a lower end region couplable to the main support body, and having a hollow interior passageway; an adjustable weight assembly receivable and moveable within the hollow interior passageway; an impact tip receivable within an opening formed in a lower end section of the main support body, the impact tip movable within the opening such that an exposed length of the impact tip protrudes outside of the main support body; and a travel-limiting assembly associated with the impact tip. The travel-limiting assembly is adjustable to define a variable maximum penetration depth of the impact tip relative to the article.

A racquet extending along a longitudinal axis and including a frame including a head portion, a handle portion, and a throat portion. The head portion forms a hoop that defines a string bed plane. At least the head portion and the throat portion of the frame are formed at least in part of a fiber composite material. When the racquet is tested under the racquet lateral bending test, the racquet has a lateral deflection of at least 6.0 mm when measured in a direction that is parallel to the string bed plane and perpendicular to the longitudinal axis. When the racquet is tested under the racquet torsional stability test, the racquet has an angular deflection of less than 5.5 degrees about the longitudinal axis. The head portion has a maximum beam height distance of at least 20 mm.

A drop test device for a micromechanical component. The drop test device includes a drop body having a shell and having an interior space for receiving at least one micromechanical component.

Steady load testing apparatus and methods are disclosed. An example test machine comprises a support extending vertically from a base, a weight assembly including a rod extending along a vertical axis, the rod to couple to a test article, a block coupled to the support, the block to guide the rod such that the rod moves along the vertical axis, an actuator operatively coupled to the block, the actuator to selectively fix and release the rod, a mounting bracket operatively coupled to the support, the mounting bracket to couple to the test article such that the test article aligns with the vertical axis, and a sensor to measure movement of the weight assembly along the vertical axis.

A testing device for mechanical properties of a spray anchor net support system, comprising a main frame (100), a lifting and transporting mechanism (200), a mechanical testing mechanism, a testing platform (500), and a monitoring mechanism (600). The lifting and transporting mechanism (200) is arranged on the main frame (100): the testing platform (500) comprises a mold set and a support assembly to be tested (530); the mold set is movably arranged on the main frame (100), and said support assembly (530) is arranged at the bottom end of the mold set, the mechanical testing mechanism is arranged corresponding to said support assembly (530) and is used for implementing a dynamic impact property test or a static mechanical property test on said support assembly (530); and the monitoring mechanism (600) is communicatively connected to the testing platform (500). The present invention further relates to a testing method for dynamic impact properties of a spray anchor net support system and a testing method for static mechanical properties of a spray anchor net support system.

A solid pharmaceutical dosage form testing apparatus and a method are presented. The solid pharmaceutical dosage form testing apparatus includes a striker component, an impact platform, a sensor data acquisition system, and a solid dosage form placement mechanism. The solid dosage form placement mechanism has first and second push components that are movable toward each other to position a solid dosage form at an impact site. The method includes performing an impact strike test on a first plurality of solid dosage forms, and measuring a plurality of peak impact force values. The method may include performing a drop test on a second plurality of solid dosage forms, and measuring a plurality of physical defect rates. The method may include determining a model that describes a relationship between peak impact force values and physical defect rates, and determining, based on the model, a predicted physical defect rate.

A repetitive impact system is disclosed for testing soft material samples under controlled impact conditions. The system includes a drop tower with a moveable mass that is repeatedly lifted and dropped by a motor-driven rack and pinion mechanism. The pinion gear may be configured to fail before other components. A sample holder is positioned in the path of the mass and may contain foam and rubber layers on one or both surfaces. An accelerometer may detect horizontal acceleration exceeding a threshold, triggering a camera to capture images for cavitation analysis. The system may apply smooth acceleration trajectories and allow adjustment of impact height based on gear tooth configuration. A method is also disclosed for detecting initial cavitation nucleation by monitoring acceleration values during repeated impacts. This system enables precise, repeatable testing of soft materials and supports real-time detection of cavitation events.