TY - JOUR
T1 - SCATTERING FROM SURFACE-BREAKING AND NEAR-SURFACE CRACKS.
AU - Achenbach, J. D.
AU - Angel, Y. C.
AU - Lin, W.
PY - 1984/12/1
Y1 - 1984/12/1
N2 - 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.
AB - 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.
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M3 - Conference article
AN - SCOPUS:0021582869
SN - 0160-8835
VL - 62
SP - 93
EP - 109
JO - American Society of Mechanical Engineers, Applied Mechanics Division, AMD
JF - American Society of Mechanical Engineers, Applied Mechanics Division, AMD
ER -