Fatigue mechanisms in metal matrix composite laminatesCertain aspects of the damage process are described. The shakedown phenomenon in laminates is first explained. This is followed by a presentation of matrix test data used in evaluating the shakedown limits of the laminates used in the subsequent experiments. Test results suggesting that there is no loss of elastic stiffness in laminates loaded at constant amplitudes within their shakedown limits are presented. Damage accumulation and the development of the saturation damage state are illustrated by experimental results on specimens loaded outside the shakedown range. Attention is also given to the behavior of laminates subjected to variable cyclic loading.
Document ID
19820045493
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Dvorak, G. J. (Utah, University Salt Lake City, UT, United States)
Johnson, W. S. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1981
Subject Category
Composite Materials
Meeting Information
Meeting: 1981 advances in aerospace structures and materials