Acoustic emission due to nucleation of a microcrack in the proximity of a macrocrack

J. D. Achenbach*, K. I. Hirashima, K. Ohno

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Acoustic emission generated by the nucleation of a microcrack in the proximity of a macrocrack is discussed in this paper. On the basis of some simple approximations the acoustic emission from a crack-opening event is directly related to its crack-opening volume as a function of time. It is shown that the nucleation of a microcrack in the immediate vicinity of a macrocrack generates additional crack-opening volumes for both the macrocrack and the microcrack, whose signals tend to be much larger than those that would emanate from a nucleating solitary microcrack.

Original languageEnglish (US)
Pages (from-to)523-532
Number of pages10
JournalJournal of Sound and Vibration
Volume89
Issue number4
DOIs
StatePublished - Aug 22 1983
Externally publishedYes

Funding

This work was carried out in the course of research sponsored by the Office of Naval Research under Contract N00014-7-74-C0063.

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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