Fundamental theory of elastic wave scattering by defects in elastic materials: integral equation methods for application to ultrasonic flaw detection

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The use of ultrasonic methods in nondestructive testing depends on the interpretation of the scattering of sound waves by flaws. The theory of elastic waves and their scattering in non-uniform media is developed in detail from first principles, and in generality. Both integral equation and differential methods are discussed, with emphasis on the former. General methods for defining scattering cross sections are presented, and conservation theorems are noted. The Born Approximation to the integral equation is presented, and computed results for several experimental situations are discussed. Several corrections to papers in the literature are made, and in particular the exact ... continued below

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Pages: 96

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Gubernatis, J.E.; Domany, E.; Krumhansl, J.A. & Huberman, M. May 1, 1976.

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Description

The use of ultrasonic methods in nondestructive testing depends on the interpretation of the scattering of sound waves by flaws. The theory of elastic waves and their scattering in non-uniform media is developed in detail from first principles, and in generality. Both integral equation and differential methods are discussed, with emphasis on the former. General methods for defining scattering cross sections are presented, and conservation theorems are noted. The Born Approximation to the integral equation is presented, and computed results for several experimental situations are discussed. Several corrections to papers in the literature are made, and in particular the exact scattering of a transverse wave by a spherical flaw is compared with the Rayleigh (long wave) limit.

Physical Description

Pages: 96

Notes

Dep. NTIS, PC A05/MF A01.

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  • Report No.: COO-3161-42
  • Grant Number: EY-76-S-02-3161
  • DOI: 10.2172/5091705 | External Link
  • Office of Scientific & Technical Information Report Number: 5091705
  • Archival Resource Key: ark:/67531/metadc1055533

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • May 1, 1976

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

Description Last Updated

  • Jan. 25, 2018, 7:07 p.m.

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Gubernatis, J.E.; Domany, E.; Krumhansl, J.A. & Huberman, M. Fundamental theory of elastic wave scattering by defects in elastic materials: integral equation methods for application to ultrasonic flaw detection, report, May 1, 1976; United States. (https://digital.library.unt.edu/ark:/67531/metadc1055533/: accessed March 19, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.