ETEK

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The performance of composite materials is based on their elastic modulii. Measurement of these is essential for accurate simulation and modeling. The ETEK is a fast and efficient system for measuring the important elastic properties of materials. The elastic and engineering constants of materials, like those of complex composites, can be determined at ambient and elevated temperatures.

The ETEK integrates advanced ultrasonic instrumentation with temperature control, coupling force, and sample thickness monitoring to provide an automated system for elastic constant measurements. By exploiting the fundamental relationship between sound velocity and elastic constants and engineering constants, like Young's modulus, the shear modulus and Poisson's ratio can be determined. ETEK operates at elevated temperatures up to 600 degrees F (320 degrees C). This advanced ultrasonic system reduces preparation and test time. ETEK is applicable to all solids but is optimal for anisotropic composites where the cost of using conventional methods to measure modulus is prohibitive.