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

Susheel K. Yadav, Sourav Banerjee, Tribikram Kundu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems 2011
DOIs
StatePublished - May 24 2011
EventHealth Monitoring of Structural and Biological Systems 2011 - San Diego, CA, United States
Duration: Mar 7 2011Mar 10 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7984
ISSN (Print)0277-786X

Other

OtherHealth Monitoring of Structural and Biological Systems 2011
CountryUnited States
CitySan Diego, CA
Period3/7/113/10/11

Keywords

  • 3D modeling
  • Circular holes
  • Crack detection
  • Distributed Point Source Method
  • Steel plate
  • Ultrasonic NDT

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Yadav, S. K., Banerjee, S., & Kundu, T. (2011). Advanced DPSM approach for modeling ultrasonic wave scattering in an arbitrary geometry. In Health Monitoring of Structural and Biological Systems 2011 [79841W] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7984). https://doi.org/10.1117/12.880334