Analysis of a Kinked Interfacial Crack Under Out-of-Plane Shear

[+] Author and Article Information
S. R. Choi

Department of Mechanical Engineering, Yeungnam University, Gyongsan, Korea

K. S. Lee

Department of Mechanical Engineering, University of Ulsan, Ulsan, Korea

Y. Y. Earmme

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusong-Dong, Yusung-Gu, Taejon, 305-701, Korea

J. Appl. Mech 61(1), 38-44 (Mar 01, 1994) (7 pages) doi:10.1115/1.2901418 History: Received April 04, 1991; Revised October 21, 1992; Online March 31, 2008


A kinked interfacial crack under out-of-plane shear is analyzed where a straight interfacial crack is kinked into material 1 out of the interface. Employing the Wiener- Hopf technique, the solution is obtained in a closed form. Discontinuity in the stress intensity factor as the kink angle to approaches zero is found, while the energy release rate is shown to be continuous at ω = 0. The limit case of the kinked length b approaching zero is also investigated. The result shows that the stress field has 1/r singularity and the energy release rate at b = 0+ is enhanced at some ω if the crack kinks into the more compliant material.

Copyright © 1994 by The American Society of Mechanical Engineers
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