Cumulative Damage in Composites

[+] Author and Article Information
H. A. Whitworth

Department of Mechanical Engineering, Howard University, Washington, D.C. 20059

J. Eng. Mater. Technol 112(3), 358-361 (Jul 01, 1990) (4 pages) doi:10.1115/1.2903338 History: Received May 08, 1989; Online April 29, 2008


The problem of cumulative fatigue damage in composites is analyzed based upon the development of a phenomenological damage model. In this modeling, a damage function is defined based on the degradation of the residual stiffness and used to predict the remaining life of composite specimens subjected to dual stress level fatigue loading. Available experimental data for graphite/epoxy composites are compared with the predictions of the present model.

Copyright © 1990 by The American Society of Mechanical Engineers
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