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Elastic Wave Scattering by Irregular Shaped Flaws

  • P. J. Schafbuch
  • R. B. Thompson
  • F. J. Rizzo
  • T. J. Rudolphi
Chapter
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series

Abstract

This work is part of a continuing effort to develop a capability for quantifying the scattering of ultrasonic waves by arbitrarily shaped flaws. The general problem of elastodynamic behavior of a homogeneous, isotropic defect in an otherwise homogeneous, isotropic fullspace is cast as a Boundary Integral Equation (BIE). A general scattering model is needed to provide information for probability of detection (POD) models and inversion schemes for cases when low or high frequency approximations are not appropriate. Previously the Boundary Element Method (BEM), a method for solving the BIE, was adapted to NDE and the void problem was investigated [1]. Here we focus on the inclusion problem, experimental verification, and to overall extensions of the capability.

Keywords

Boundary Element Method Boundary Integral Equation Hand Side Vector High Frequency Approximation Titanium Sphere 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • P. J. Schafbuch
    • 1
  • R. B. Thompson
    • 1
  • F. J. Rizzo
    • 2
  • T. J. Rudolphi
    • 2
  1. 1.Center for NDE Institute for Physical Research and TechnologyIowa State UniversityAmesUSA
  2. 2.Dept. of Engineering Science and MechanicsIowa State UniversityAmesUSA

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