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Proceedings Paper

A New Optical Method For Determining The Stress Intensity Factor
Author(s): Cao Hong; Jia Youquan; Wang Yinyan
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Paper Abstract

This paper provides an optical method for determining the stress intensity factor. The optical properties of grating and wedge are used to form two images of a specime which stagger a small distance. The distance can be regulated stepless. Information of the partial derivative of the sum of principal stress around the crack tip is directly obtained by the shearing interference of two images and then the stress intensity factor is evaluated. This method is suited to both transparent and opaque material. Its sensitivity can be increased by multiplying technique.

Paper Details

Date Published: 17 February 1987
PDF: 5 pages
Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); doi: 10.1117/12.941703
Show Author Affiliations
Cao Hong, Tianjin University (China)
Jia Youquan, Tianjin University (China)
Wang Yinyan, Tianjin University (China)

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

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