Application of MOOT to scattering of elastic waves from compound inclusions

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It is shown how MOOT (method of optimal truncation, a convergent T-matrix scheme) can be used to calculate elastic wave scattering from compound inclusions, i.e., inclusions which themselves contain flaws - inclusions, voids, or cracks. The general equations are derived, and they are solved for a particular axially-symmetric case - a cracked spherical inclusion immersed in fluid. The crack edge is a circle on the equatorial plane; the crack can extend either inward to the center or outward to the surface of the sphere. Numerical results are given for scattering of acoustic waves from cracked spheres of various materials. Cracked ... continued below

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Pages: 6

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Visscher, W.M. January 1, 1980.

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Description

It is shown how MOOT (method of optimal truncation, a convergent T-matrix scheme) can be used to calculate elastic wave scattering from compound inclusions, i.e., inclusions which themselves contain flaws - inclusions, voids, or cracks. The general equations are derived, and they are solved for a particular axially-symmetric case - a cracked spherical inclusion immersed in fluid. The crack edge is a circle on the equatorial plane; the crack can extend either inward to the center or outward to the surface of the sphere. Numerical results are given for scattering of acoustic waves from cracked spheres of various materials. Cracked spheres can be fabricated relatively easily, and may be useful in NDE calibrations.

Physical Description

Pages: 6

Notes

NTIS, PC A02/MF A01.

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  • DARPA/AFML review of progress in quantitative NDE conference, La Jolla, CA, USA, 14 Jul 1980

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  • Report No.: LA-UR-80-2039
  • Report No.: CONF-800767-2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5152954
  • Archival Resource Key: ark:/67531/metadc1060490

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1980

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  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 2, 2018, 3:03 p.m.

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Visscher, W.M. Application of MOOT to scattering of elastic waves from compound inclusions, article, January 1, 1980; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1060490/: accessed May 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.