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Proceedings Paper

Advanced DPSM approach for modeling ultrasonic wave scattering in an arbitrary geometry
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Paper Abstract

Several techniques are used to diagnose structural damages. In the ultrasonic technique structures are tested by analyzing ultrasonic signals scattered by damages. The interpretation of these signals requires a good understanding of the interaction between ultrasonic waves and structures. Therefore, researchers need analytical or numerical techniques to have a clear understanding of the interaction between ultrasonic waves and structural damage. However, modeling of wave scattering phenomenon by conventional numerical techniques such as finite element method requires very fine mesh at high frequencies necessitating heavy computational power. Distributed point source method (DPSM) is a newly developed robust mesh free technique to simulate ultrasonic, electrostatic and electromagnetic fields. In most of the previous studies the DPSM technique has been applied to model two dimensional surface geometries and simple three dimensional scatterer geometries. It was difficult to perform the analysis for complex three dimensional geometries. This technique has been extended to model wave scattering in an arbitrary geometry. In this paper a channel section idealized as a thin solid plate with several rivet holes is formulated. The simulation has been carried out with and without cracks near the rivet holes. Further, a comparison study has been also carried out to characterize the crack. A computer code has been developed in C for modeling the ultrasonic field in a solid plate with and without cracks near the rivet holes.

Paper Details

Date Published: 31 March 2011
PDF: 7 pages
Proc. SPIE 7984, Health Monitoring of Structural and Biological Systems 2011, 79841W (31 March 2011); doi: 10.1117/12.880334
Show Author Affiliations
Susheel K. Yadav, The Univ. of Arizona (United States)
Sourav Banerjee, Acellent Technologies, Inc. (United States)
Tribikram Kundu, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 7984:
Health Monitoring of Structural and Biological Systems 2011
Tribikram Kundu, Editor(s)

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