DAMAGE MECHANISMS AND ACCUMULATION IN GRAPHITE/EPOXY LAMINATES.

Alain Charewicz*, Isaac M. Daniel

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

83 Scopus citations

Abstract

Damage mechanisms and accumulation, and associated stiffness and residual strength reductions, were studied in cross-ply graphite/epoxy laminates under cyclic tensile loading. Stress-life data were fitted by straight lines on a log-log scale. The fatigue sensitivity decreases with the number of contiguous 90-deg plies. Five different damage mechanisms were observed: transverse matrix cracking, dispersed longitudinal cracking, localized longitudinal cracking, delaminations along transverse cracks, and local delaminations at the intersections of longitudinal and transverse cracks. A cumulative damage model is proposed based on residual strength and the concept of equal damage curves.

Original languageEnglish (US)
Title of host publicationASTM Special Technical Publication
EditorsH.Thomas Hahn
PublisherASTM
Pages274-297
Number of pages24
ISBN (Print)0803104707
StatePublished - Dec 1 1986

Publication series

NameASTM Special Technical Publication
ISSN (Print)0066-0558

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Charewicz, A., & Daniel, I. M. (1986). DAMAGE MECHANISMS AND ACCUMULATION IN GRAPHITE/EPOXY LAMINATES. In H. T. Hahn (Ed.), ASTM Special Technical Publication (pp. 274-297). (ASTM Special Technical Publication). ASTM.