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TECHNICAL PAPERS

An Axisymmetric Crack in Bonded Materials With a Nonhomogeneous Interfacial Zone Under Torsion

[+] Author and Article Information
M. Ozturk, F. Erdogan

Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015-3006

J. Appl. Mech 62(1), 116-125 (Mar 01, 1995) (10 pages) doi:10.1115/1.2895891 History: Received September 09, 1992; Revised October 28, 1993; Online October 30, 2007

Abstract

In this study the mode III axisymmetric crack problem for two dissimilar homogeneous materials bonded through a thin layer of nonhomogeneous interfacial region is considered. The shear modulus of the interfacial layer is assumed to be μ2 (z) = μ1 exp (αz). It is also assumed that μ3 = μ1 exp (αh), h being the thickness of the layer and μ1 and μ3 the shear moduli of the adherents. The main results of the study are the stress intensity factors, the strain energy release rates and, to a limited extent, the crack-opening displacements obtained as functions of the two primary variables h/a and μ3 /μ1 under various loading conditions, where a is the radius of the crack. Some results are also presented for a penny-shaped crack in an unbounded nonhomogeneous medium.

Copyright © 1995 by The American Society of Mechanical Engineers
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