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RESEARCH PAPERS

Photoelastic Determination of Stress Intensity Factor of an Interfacial Crack in a Bi-material

[+] Author and Article Information
Hua Lu, F. P. Chiang

Laboratory for Experimental Mechanics Research, Department of Mechanical Engineering, State University of New York, Stony Brook, NY 11790-2300

J. Appl. Mech 60(1), 93-100 (Mar 01, 1993) (8 pages) doi:10.1115/1.2900785 History: Received August 02, 1989; Revised January 11, 1991; Online March 31, 2008

Abstract

The stress intensity factor of an interfacial crack in a bi-material can be represented by a complex vector whose phase changes as a function of r , the radial distance from a crack tip. Two photoelasticity approaches are proposed for the determination of both the magnitude and the phase angle of this complex vector. It is shown that within the K -dominated zone the complex stress intensity factor can be determined at any r and then converted to any other r . The case of an interfacial crack under remote tension is used as an example for the illustration of the proposed techniques.

Copyright © 1993 by The American Society of Mechanical Engineers
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