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Numerical Simulation of 3D SH-Wave Fields Generated in Anisotropic Materials


Levy, M.; McAvoy, B.R.; Schneider, S.C. ; Ultrasonics Ferroelectric and Frequency Control Society; Institute of Electrical and Electronics Engineers -IEEE-:
IEEE Ultrasonics Symposium 1996. Proceedings. Vol. 1
Piscataway, NJ: IEEE, 1997
ISBN: 0-7803-3615-1
Ultrasonics Symposium <1996, San Antonio/Tex.>
Fraunhofer IZFP ()
Anisotropie; anisotropy; modeling; Modellierung; Prüfkopf; Schallfeld; Superposition; transducer; wave propagation; Wellenausbreitung

Under certain conditions, horizontally polarized shear (SH) waves can be generated by using Electromagnetic Acoustic Transducers. To explain experimentally observed phenomena and to predict the cases where SH-waves might be best employed, simulation of inherent wave propagation effects such as beam skewing, splitting and distortion is required. In this paper, a previously developed methodology to map radiation fields for longitudinal piezoelectric transducers is applied to the imaging of three-dimensional SH-fields generated in anisotropic propagation media. The processed data files are calculated for transversely isotropic materials via the Generalized Point-Source-Synthesis method. The synthetic data is transferred to an imaging workstation, where the 3D-transducer fields are displayed using commercially available graphic packages.