Interference of corner reflected and edge diffracted signals for a surface-breaking crack

J. D. Achenbach, A. N. Norris

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Backscatter of time-harmonic longitudinal waves from a surface-breaking crack is investigated in the high-frequency range. It is assumed that the distance of the transducer to the crack is large as compared to the crack depth, and that the incident rays are normal to the crack edge. The crack length is assumed much greater than its depth. A two-dimensional model for the transducer is considered. In the time domain, the first and second received signals are the edge-diffracted signal and the corner-reflected signal, respectively. These signals are analyzed in the frequency domain, by using the uniform asymptotic theory of diffraction. The response of the transducer due to the interference of the two signals is calculated. It is shown that the transducer’s response is a sensitive function of its position.

Original languageEnglish (US)
Pages (from-to)165-171
Number of pages7
Journaljournal of the Acoustical Society of America
Volume70
Issue number1
DOIs
StatePublished - Jul 1981

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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