Application-directed modeling of radiation and propagation of elastc waves in anisotropic media: GPSS and OPOSSM
Abstract
Based on a theory of elastic wave propagation in transversely isotropic media, the Generalized Point-Source-Synthesis-method (GPSS) has been developed to model the radiation, propagation and scattering of elastic waves as generated by ultrasonic trasnducers in this media. The method accounts for the three dimensionality and the vectorial character of anisotropic wave phenomena and is particularly useful in view of application-directed modeling at low computation times. A specifically interseting outcome is OPoSSM (Optimization by Point-Source-Synthesis-Modeling) which allows optimized dimensioning and build-up of complex transducers according to their selected field of application. In this contribution, results are presented for austenitic weld material and fiber composites. Furthermore, OPoSSM-results on optimized TR-array-probes are presented as well as snapshots of transducer-generated wavefronts.
