Review of Progress in Quantitative Nondestructive Evaluation
A numerical study is presented of the influence of crack morphology on ultrasonic pulse-echo response. Crack morphology is described as a planar crack onto which a random normal direction deviation is imposed with a specified tangential correlation length. Pulse-echo responses for ensembles of random crack profiles are computed as a function of profile height, correlation length, crack length, angle of incidence, wave mode type and signal bandwidth. Mean and variance of signal peak amplitude are compiled. Limits of validity of a Kirchhoff scattering approximation are observed through comparison to boundary element method (BEM) predictions.
American Institute of Physics
Roberts, Ronald A., "The effect of crack morphology on ultrasonic response" (2011). Center for Nondestructive Evaluation Conference Papers, Posters and Presentations. 22.