Abstract
An ultrasonic measurement system that can measure longitudinal and transverse wave velocities, elastic modulus, Poisson’s ratio, and acoustic nonlinearity parameter, and that can estimate strain-stress relationship has been developed. The system sequentially performs a series of measurements including linear and nonlinear ultrasonic measurements automatically. The linear measurement includes an auto-correlation signal processing function to accurately measure the time-of-flight of echoes. The nonlinear measurement includes a function of automatically adjusting the input voltage, the fast Fourier transform processing, and a linear fitting function to obtain acoustic nonlinearity parameter. A strain-stress relationship in the elastic region, reconstructed from the measured linear and nonlinear properties, is also provided.
How to Cite:
Song, D. ., Ryu, J. ., Hong, J. ., Choi, S. . & Jhang, K. ., (2019) “Linear/nonlinearity ultrasonic measurement system for evaluation of material elastic properties”, Review of Progress in Quantitative Nondestructive Evaluation .
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