SCATTERING FROM SURFACE-BREAKING AND NEAR-SURFACE CRACKS.

J. D. Achenbach*, Y. C. Angel, W. Lin

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations

Abstract

Paper reviews scattering of surface waves and body waves by cracks that are located at or near the free surface of an elastic body. For two-dimensional configurations, exact formulations and frequency-domain numerical results are presented for a normal surface-breaking crack, and for sub-surface cracks that are oriented under various angles with the free surface. Far-field as well as some near-field amplitude spectra are presented. Some recent results are discussed for the three-dimensional problem of reflection, transmission and scattering of obliquely incident Rayleigh surface waves by an infinitely long surface-breaking crack. An approximation to the scattered field for a surface-breaking crack of a large length to depth ratio is constructed by judicious use of crack-opening displacements for the infinitely long crack in conjunction with an elastodynamic representation integral.

Original languageEnglish (US)
Pages (from-to)93-109
Number of pages17
JournalAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume62
StatePublished - 1984
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'SCATTERING FROM SURFACE-BREAKING AND NEAR-SURFACE CRACKS.'. Together they form a unique fingerprint.

Cite this