An aspect of the invention is a testing system for applying loads to a test specimen. The testing system includes the actuator and the first support portion supporting the actuator. The actuator is configured to support a first end of the test specimen, while a second support portion configured to support a second end of the test specimen. In various embodiments, combination of sensors that can include displacement sensor and/or accelerometer(s) provide associated output signals that are received by a displacement compensator that is configured to provide a displacement output signal indicative of differential displacement between first end and the second end of the test specimen.

Disclosed is an exemplary test apparatus having an autoclave head, a fretting mechanism connected on a first end to a first side of the autoclave head, a load train operably connected with a first end of the fretting mechanism, an autoclave adapter connected on a first side to a second side of the autoclave head, and a force balance assembly connected to a second side of the autoclave head and configured to equalize a pressure acting on the load train. Certain exemplary embodiments include an upper plate, a plurality of upper tie rods connected to a first side of the upper plate and a second side of the autoclave adapter, a lower plate, a plurality of lower tie rods connected to the first side of the autoclave head and a first side of the lower plate, and a pressure vessel sealingly connected to the first side of the autoclave head.

A dynamic mechanical analysis system provides an actuator that imparts expansion and contraction forces (e.g. shear force) to a viscoelastic material at high frequencies. Such high frequency analysis allows for the direct and accurate measurement of the characteristics of the material at high expansion/contraction frequencies directly, without the use of additional predictive analysis techniques, such as time-temperature superposition. The system also utilizes a clamping system, whereby two different sections of the viscoelastic material are held in place between by a pair of fixed clamps and a force member that is moved by the actuator. As such, the system is able to subject the viscoelastic material sample to simulated road conditions to identify various performance properties associated with the material sample.

Disclosed is an exemplary test apparatus having an autoclave head, a fretting mechanism connected on a first end to a first side of the autoclave head, a load train operably connected with a first end of the fretting mechanism, an autoclave adapter connected on a first side to a second side of the autoclave head, and a force balance assembly connected to a second side of the autoclave head and configured to equalize a pressure acting on the load train. Certain exemplary embodiments include an upper plate, a plurality of upper tie rods connected to a first side of the upper plate and a second side of the autoclave adapter, a lower plate, a plurality of lower tie rods connected to the first side of the autoclave head and a first side of the lower plate, and a pressure vessel sealingly connected to the first side of the autoclave head.

This ultrasonic fatigue testing machine is one that resonates a test piece by an ultrasonic wave to perform a fatigue test, and configured to include an ultrasonic wave generation part 10, a displacement measurement part 20, and a control part 30 that controls the overall operation of the ultrasonic fatigue testing machine. The control part 30 is configured to have a computer that includes storage devices capable of store programs and various types of data, such as an RAM and an ROM, and an arithmetic unit such as a CPU, and includes an internal temperature estimation part 31, an allowable range setting part 32, and a determination part 33 as a main functional configuration.

A method for predicting a multiaxial fatigue life. The method includes: obtaining a first temperature rise value of a to-be-tested material in a first cycle; determining first inherent dissipation energy of the to-be-tested material in the first cycle according to the first temperature rise value and a time constant; and determining the multiaxial fatigue life of the to-be-tested material according to a first proportional value, the first inherent dissipated energy, axial fatigue test parameters and torsional fatigue test parameters; the first proportional value is a ratio of an axial strain amplitude to a torsional strain amplitude of a multiaxial fatigue test, the axial fatigue test parameters are configured to represent an axial fatigue resistance of the to-be-tested material, and the torsional fatigue test parameters are configured to represent a torsional fatigue resistance of the to-be-tested material.

An ultrasound vibrating-type defect detection apparatus (100) for detecting a defect in a semiconductor apparatus (10) is provided with: an ultrasound vibrator (42); a high-frequency power supply (40); a camera (45); and a controller (50) for adjusting the frequency of high-frequency power supplied from the high-frequency power supply (40) to the ultrasound vibrator (42), and for performing detection of a defect in the semiconductor apparatus (10). The controller (50) causes the camera (45) to capture an image of the semiconductor apparatus (10) while varying the frequency of high-frequency power supplied from the high-frequency power supply (40) to the ultrasound vibrator (42), and performs detection of a defect in the semiconductor apparatus (10) on the basis of the captured image.