Journal Published Online: 01 October 1981
Volume 3, Issue 3

Tensile Fatigue Performance of Glass Fiber Dominated Composites



The fatigue data curves of a variety of glass fiber composites ranging from injection-molded thermoplastics and sheet molding compounds to unidirectional laminates are shown to have the same fatigue degradation rate, losing approximately 10% of their initial tensile strength per decade of fatigue cycles. This degradation rate is derived from the reinforcement: unimpregnated strands have the same fatigue performance as do composites. The matrix and interface contribute nothing to the resistance to fatigue failure. The underlying mechanisms responsible for this behavior are discussed. Exceptions occur in some materials because of specimen size effects and in others because of more severe degradation mechanisms such as those that occur with woven fabric reinforcement. The behavior at very low stresses and long lifetimes requires further investigation.

Author Information

Mandell, JF
Massachusetts Institute of Technology, Cambridge, Mass.
Huang, DD
Massachusetts Institute of Technology, Cambridge, Mass.
McGarry, FJ
Massachusetts Institute of Technology, Cambridge, Mass.
Pages: 7
Price: $25.00
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Stock #: CTR10732J
ISSN: 0884-6804
DOI: 10.1520/CTR10732J