OS0714 Numerical Modeling by Hybrid Method of EFIT and BEM for Ultrasonic Testing with EMAT

Abstract

Electromagnetic acoustic transducers (EMATs) are widely used in nondestructive testing for metal. The advantage of the EMAT is that a non-contact inspection is possible. To enhance the reliability and applicability of the EMAT testing, a numerical simulation tool for the EMAT testing is proposed in this study. Our tool is based on the boundary element method (BEM) and elastodynamic finite integration technique (EFIT). A hybrid usage of the BEM and EFIT produces an efficient and accurate calculation of ultrasonic wave generated from the EMAT. In this study, a simulation of ultrasonic wave propagation in a pipe is demonstrated.