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Proceedings Paper

Determination Of Stress Intensity Factors (K[sub]1[/sub], K[sub]2[/sub], K[sub]3[/sub]) By Optical Methods
Author(s): C. W. Smith
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Paper Abstract

An early description of the photoelastic method was provided by Coker and Filon in 1931. Then, in 1937, Oppel introduced the concept of frozen stress photoelasticity. However, one of the first applications of photoelasticity to the field of fracture mechanics did not come until 1958, when Wells and Post conducted their photoelastic study of a running crack. In a discussion of this latter paper, Irwin described a method for extracting the Mode I stress intensity factor (SIP) hereafter referred to as K1, from the photoelastic stress fringe signatures. Subsequently, Fessler and Mansell were among the first to apply Oppel's frozen stress method to the extraction of K1 distributions from three dimensional cracked body problems.

Paper Details

Date Published: 17 February 1987
PDF: 7 pages
Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); doi: 10.1117/12.941651
Show Author Affiliations
C. W. Smith, Virginia Polytechnic Institute and State University (United States)

Published in SPIE Proceedings Vol. 0814:
Photomechanics and Speckle Metrology
Fu-Pen Chiang, Editor(s)

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