Impact Response of a Single Edge Crack in an Orthotropic Strip

[+] Author and Article Information
Yasuhide Shindo, Hiroaki Higaki

Department of Materials Processing, Faculty of Engineering, Tohoku University, Sendai 980, Japan

Hideaki Nozaki

Department of Mechanical Engineering, Tokyo National College of Technology, Hachioji, Tokyo 193, Japan

J. Appl. Mech 59(2S), S152-S157 (Jun 01, 1992) doi:10.1115/1.2899480 History: Received November 28, 1990; Revised July 21, 1991; Online March 31, 2008


The elastodynamic response of a single edge crack in an orthotropic strip under normal impact is considered in this study. The edge crack is oriented in a direction normal to the edge of the strip. Laplace and Fourier transforms are used to reduce the transient problem to the solution of a pair of dual integral equations in the Laplace transform plane. The solution to the dual integral equations is then expressed in terms of a Fredholm integral equation of the second kind. A numerical Laplace inversion routine is used to recover the time dependence of the solution. Numerical values on the dynamic stress intensity factor for several fiber-reinforced composite materials are obtained, and the results are graphed to display the influence of the material orthotropy.

Copyright © 1992 by The American Society of Mechanical Engineers
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