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2000
Journal Article
Titel
Analytical Methods for Simulation of Ultrasonic Testing of Complex Media on a Personal Computer
Abstract
Modern structural materials mostly exhibit anisotropic elastic behavior leading to complicated wave propagation phenomena. To ensure the reliability of ultrasonic nondestructive testing techniques, these material properties as well as the influence of microstructural inhomogeneities and the effects of non-planar surfaces and interfaces on ultrasonic wave propagation have to be taken into account. In this respect, mathematical modeling provides an efficient method of assisting analysis. This paper presents two analytical approaches, which are well-suited for performing ultrasonic wave propagation and scattering simulations for complex-structured media on a personal computer. Results for both isotropic materials including curved interfaces and for anisotropic media like composites and weld material are presented. The simulation of transducer field profiles, the propagation of time-dependent rf-signals and the scattering of ultrasound at defects are addressed.