A method of conducting a shear strength test on a semiconductor element with improved pressing force direction includes pressing a peripheral surface of the semiconductor element with a shear tool in a direction inclined to gradually head away from the surface of the substrate along the direction of pressing to conduct a shear strength test with a die shear strength tester.

A device and method for testing fracture toughness of a solid-ice interface on a surface of coating material in a large-scale freezing status are provided. The method uses the principle of single-cantilever beam loading, and utilizes the bending stress of a metal substrate to induce the generation and extension of micro-cracks at the solid-ice interface, which are intended to observe the fracture behavior at the interface between the surface of a coating material with metal as a substrate and the ice layer, so as to obtain the fracture toughness at the interface between the ice layer and the surface of the substrate.

A device and method for testing fracture toughness of a solid-ice interface on a surface of coating material in a large-scale freezing status are provided. The method uses the principle of single-cantilever beam loading, and utilizes the bending stress of a metal substrate to induce the generation and extension of micro-cracks at the solid-ice interface, which are intended to observe the fracture behavior at the interface between the surface of a coating material with metal as a substrate and the ice layer, so as to obtain the fracture toughness at the interface between the ice layer and the surface of the substrate.

A device and test method for characterizing granular materials for angle of repose, static and dynamic flow properties, and process parameter variables by means of defining a sample retention boundary. The device is composed of a funnel for dynamic testing, a retention ring for static testing, a base, and a test device having an upper surface set at one or more angles to determine conditions in which samples are retained. By varying the texture of the surface, flow characteristics and other process issues can be evaluated.

Systems and methods for bondline inspection using mechanical wave measurement and gas excitation. A cost-effective optical interferometry technique is used to measure mechanical waves generated by gas excitation, which measurements may be used to verify the strength of a bondline of a composite bonded structure. A gas gun which produces a high-pressure short-pulsewidth gas pulse at the front free surface of the composite material. A velocity interferometer system for any reflector (VISAR) is synchronized with the controlled gas pulsation and used to measure the surface velocities. The respective shock wave-induced displacements of the back and front free surfaces are then calculated. The measured free surface displacements are compared with calibrated thresholds to determine whether a weak bond has been detected or not. Optionally, a ring magnet is aligned exactly under the gas gun nozzle to enable VISAR beam centering.

Systems and methods for bondline inspection using mechanical wave measurement and gas excitation. A cost-effective optical interferometry technique is used to measure mechanical waves generated by gas excitation, which measurements may be used to verify the strength of a bondline of a composite bonded structure. A gas gun which produces a high-pressure short-pulsewidth gas pulse at the front free surface of the composite material. A velocity interferometer system for any reflector (VISAR) is synchronized with the controlled gas pulsation and used to measure the surface velocities. The respective shock wave-induced displacements of the back and front free surfaces are then calculated. The measured free surface displacements are compared with calibrated thresholds to determine whether a weak bond has been detected or not. Optionally, a ring magnet is aligned exactly under the gas gun nozzle to enable VISAR beam centering.

A method and apparatus for determining the sealability of an oil & gas well sealant fluid, whereby a cylindrical cell assembly capable of withstanding high temperature and high pressure with an electromagnetic heater positioned radially outside the cell body while partly filled with said sealant fluid. A minor-leak assembly in connection to said cylindrical cell assembly allows said sealant fluid to continuously flow through a leak sample at a desired differential pressure, and the residual fluid is drained into said cell by a cycling pipeline system. The real-time pressure may be recorded to transmitted to a control system comprised of data acquisition and control units so as to monitor and measure the sealability of fluid in the downhole minor leaks.

A method and apparatus for determining the sealability of an oil & gas well sealant fluid, whereby a cylindrical cell assembly capable of withstanding high temperature and high pressure with an electromagnetic heater positioned radially outside the cell body while partly filled with said sealant fluid. A minor-leak assembly in connection to said cylindrical cell assembly allows said sealant fluid to continuously flow through a leak sample at a desired differential pressure, and the residual fluid is drained into said cell by a cycling pipeline system. The real-time pressure may be recorded to transmitted to a control system comprised of data acquisition and control units so as to monitor and measure the sealability of fluid in the downhole minor leaks.

A testing arrangement and method of using in performing an in-situ adhesion test of a cold spray deposit on a surface of a structure. The testing arrangement includes a specimen member having a number of apertures defined therein and a loading arrangement coupled to the specimen member. The loading arrangement is configured to provide a mechanical force of a known magnitude to the specimen member. In performing an in-situ test of a cold spray deposit on a structure, the method includes positioning the testing arrangement with respect to a surface of the structure, depositing the cold spray deposit on the surface of the structure, and testing the adhesion of the cold spray deposit to the surface.

A testing arrangement and method of using in performing an in-situ adhesion test of a cold spray deposit on a surface of a structure. The testing arrangement includes a specimen member having a number of apertures defined therein and a loading arrangement coupled to the specimen member. The loading arrangement is configured to provide a mechanical force of a known magnitude to the specimen member. In performing an in-situ test of a cold spray deposit on a structure, the method includes positioning the testing arrangement with respect to a surface of the structure, depositing the cold spray deposit on the surface of the structure, and testing the adhesion of the cold spray deposit to the surface.