A numerical integration Green's function model for ultrasonic field profiles in mildly anisotropic media

J. L. Rose, K. Balasubramaniam, A. Tverdokhlebov

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A numerical integration technique utilizing a point source Green's function is introduced to analyze the wave behavior in transversely isotropic-type anisotropic media allowing us to make fast and accurate computations of the acoustic field. The centrifugally cast stainless steel (CCSS) used in nuclear power plants is chosen as a sample medium because of its columnar grain character leading to material anisotropy. A representative number of field profiles are computed and plotted to illustrate the quasi-longitudinal, quasi-transverse, and horizontally-polarized shear wave propagation in a transversely-isotropic medium. Phenomena such as beam skewing, beam splitting, beam focusing, unsymmetrical beams, and other anisotropic effects, some of which are already known from earlier experimental observations, emerge as a computational result of the introduced technique.

Original languageEnglish (US)
Pages (from-to)165-179
Number of pages15
JournalJournal of Nondestructive Evaluation
Issue number3
StatePublished - Sep 1 1989


All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

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