Evolution of Interlayer and Intralayer Cracks Under Compressive Fatigue in Composites

[+] Author and Article Information
Assimina A. Pelegri

Mechanical and Aerospace Engineering, Rutgers—The State University of New Jersey, Piscataway, NJ 08854-8058

J. Eng. Mater. Technol 121(4), 430-435 (Oct 01, 1999) (6 pages) doi:10.1115/1.2812398 History: Received January 19, 1999; Revised June 25, 1999; Online November 27, 2007


An investigation into the growth behavior of interlayer and intralayer cracks in delaminated cross-ply laminates subjected to fatigue compression is presented. Experimental data indicate different fatigue growth patterns for the two cases. The effects of mode mixity and position of the delamination in the formation of the cracks are studied. A mode-dependent fatigue growth law is applied in order to predict the behavior of the intralayer and interlayer cracks. Successful correlation of the analytical and test data is conducted for the interlayer cracks. For the intralayer cracks, addition of contact effects and local geometrical parameters in the model are suggested.

Copyright © 1999 by The American Society of Mechanical Engineers
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