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The fatigue behavior of composite laminates under various mean stressesA method is developed for predicting the S-N curve of a composite laminate which is subjected to an arbitrary stress ratio, R (minimum stress/maximum stress). The method is based on the measuring of the S-N behavior of two distinct cases, tension-tension and compression-compression fatigue loadings. Using these parameters, expressions are formulated that estimate the fatigue behavior under any stress ratio loading. Experimental results from the testing of graphite/epoxy laminates, with various structures, are compared with the predictions and show good agreement.
Document ID
19910033499
Document Type
Reprint (Version printed in journal)
Authors
Rotem, A. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Composite Structures
Volume: 17
Issue: 2, 19
ISSN: 0263-8223
Subject Category
STRUCTURAL MECHANICS
Distribution Limits
Public
Copyright
Other