Location

La Jolla, CA

Start Date

1979 12:00 AM

Description

We discuss apparent characteristic features of Rayleigh scattering of elastic waves from cracks. Interpreting these features, we propose a procedure that in some experimental situations may be useful to distinguish generally-shaped cracks from volume defects. For elliptically-shaped cracks, we propose additional procedures that in principle allow the unique specification of crack size, shape and orientation; however, we suggest that in practice only the crack plane orientation and a lower bound on the crack length is measurable. We also comment upon the inversion procedure of Kahn and Rice.

Book Title

Proceedings of the ARPA/AFML Review of Progress in Quantitative NDE

Chapter

11. Fundamentals and New Techniques

Pages

418-423

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Crack Identification and Characterization in the Rayleigh Limit

La Jolla, CA

We discuss apparent characteristic features of Rayleigh scattering of elastic waves from cracks. Interpreting these features, we propose a procedure that in some experimental situations may be useful to distinguish generally-shaped cracks from volume defects. For elliptically-shaped cracks, we propose additional procedures that in principle allow the unique specification of crack size, shape and orientation; however, we suggest that in practice only the crack plane orientation and a lower bound on the crack length is measurable. We also comment upon the inversion procedure of Kahn and Rice.