Residual thermal and moisture influences on the analysis of local delaminations
Journal Article
·
· Journal of Composites Technology and Research; (United States)
OSTI ID:7203526
- U.S. Army, Aerostructures Directorate (United States) NASA, Langley Research Center, Hampton, VA (United States)
An analysis using laminated plate theory is developed to calculate the strain energy release rate associated with local delaminations originating at off-axis, angle-ply, matrix cracks in laminates subjected to uniaxial loads. The analysis includes the contribution of residual thermal and moisture stresses to the strain energy released. Examples are calculated for the strain energy release rate associated with local delaminations originating at 90 deg and angle-ply(non 90 deg) matrix-ply cracks in glass-epoxy and graphite-epoxy laminates. The solution developed may be used to assess the relative contribution of mechanical, residual thermal, and moisture stresses on the strain energy release rate for local delamination for a variety of lay-ups and materials. 12 refs.
- OSTI ID:
- 7203526
- Journal Information:
- Journal of Composites Technology and Research; (United States), Journal Name: Journal of Composites Technology and Research; (United States) Vol. 14:2; ISSN 0885-6804; ISSN JCTRE
- Country of Publication:
- United States
- Language:
- English
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