Determination Of Stress Intensity Factors (K[sub]1[/sub], K[sub]2[/sub], K[sub]3[/sub]) By Optical Methods

C. W. Smith

doi:10.1117/12.941651

17 February 1987 Determination Of Stress Intensity Factors (K₁, K₂, K₃) By Optical Methods

C. W. Smith

Proceedings Volume 0814, Photomechanics and Speckle Metrology; (1987) https://doi.org/10.1117/12.941651
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

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.

Citation Download Citation

C. W. Smith "Determination Of Stress Intensity Factors (K₁, K₂, K₃) By Optical Methods", Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); https://doi.org/10.1117/12.941651

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