Acoustic emission from a surface-breaking crack in a layer under cyclic loading

Jan D. Achenbach*

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

An isotropic, homogeneous, elastic layer is subjected to a time-harmonic tensile stress of constant amplitude parallel to the free surfaces. The cyclic stresses are assumed to generate a surface-breaking crack of length l(t) which propagates normally to the top surface of the layer. The unloading of the crack faces generates acoustic emission, which is composed of Lamb waves. The elastodynamic reciprocity theorem for time-harmonic waves is used to determine the amplitudes of the radiated system of time-harmonic Lamb waves.

Original languageEnglish (US)
Pages (from-to)649-657
Number of pages9
JournalJournal of Mechanics of Materials and Structures
Volume4
Issue number4
DOIs
StatePublished - Apr 1 2009

Keywords

  • Acoustic emission
  • Crack
  • Cyclic loading
  • Layer
  • Reciprocity theorem

ASJC Scopus subject areas

  • Mechanics of Materials
  • Applied Mathematics

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