Journal Published Online: 01 June 1992
Volume 14, Issue 2

Residual Thermal and Moisture Influences on the Analysis of Local Delaminations

CODEN: JCTRER

Abstract

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° and angle-ply (non 90°) 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 layups and materials.

Author Information

O'Brien, TK
U.S. Army Aerostructures Directorate, NASA Langley Research Center, Hampton, VA
Pages: 9
Price: $25.00
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Stock #: CTR10087J
ISSN: 0884-6804
DOI: 10.1520/CTR10087J