Acoustic emission from macro-microcrack configurations

Ch Zhang*, J. D. Achenbach

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter


In an earlier paper the effect of the proximity of a macrocrack on the acoustic emission generated by microcrack nucleation was analyzed under the restriction that the microcrack was located in the plane of the macrocrack. In this paper the microcrack may be arbitrarily oriented with regard to the macrocrack. The elastodynamic crack-opening displacements of both cracks were computed as numerical solutions of a set of coupled singular integral equations by use of the boundary element method. The fields were computed using the elastodynamic representation integral and the fast Fourier transform. Parametric studies showed the effect of microcrack orientation and distance from the macrocrack on the acoustically emitted fields.

Original languageEnglish (US)
Title of host publicationReview of Progress in Quantitative Nondestructive Evaluation
Number of pages7
Volume7 B
StatePublished - 1988
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)


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