Numerical Calculations of Ultrasonic Field/Crack Interactions

摘要

A program for calculating realistic ultrasonic fields in solids has been shown to be in good agreement with the model of Thompson and Gray. The program has been used in combination with some simple field/flaw interaction models to predict the spectra of the returning echoes from the flaws, and these spectra have been compared to experimental measurements, with fair agreement for the best model. However, some details of the spectra have only been partially reproduced, indicating that some improvement in the field/flaw interaction models is required. (ERA citation 11:007669)