ISSN: 0884-6804
CODEN: JCTRER
Page Count: 6

The Effect of Cooling Rate on Residual Stress in a Thermoplastic Composite
Hahn, HT
Visiting scientist and professor, The Pennsylvania State University, PA

Kim, K-S
Visiting scientist and professor, The Pennsylvania State University, PA

Croman, RB
Research engineer, Pioneering Research Laboratory, E. I. du Pont de Nemours & Company, Inc., DE

Abstract

The effect of cooling rate on residual stress development in a graphite/thermoplastic matrix composite was studied by monitoring warping of an unsymmetric cross-ply laminate. Being amorphous, the thermoplastic resin showed only a minimal sensitivity to the cooling rates employed. The residual stresses at room temperature were high enough to cause ply cracking. Therefore, the effect of transverse crack on the curvature was evaluated by using a modified stiffness model based on the classical laminate theory.

Keywords:
thermoplastic matrix composites, cooling rate effects, ply cracking, residual stresses

Paper ID: CTR10151J
DOI: 10.1520/CTR10151J
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