Constitutive Behavior and Damage Characterization of High Temperature Polymer Composites
Final rept. 15 Oct 1997-14 Apr 2001
NORTHWESTERN UNIV EVANSTON IL SCHOOL OF ENGINEERING AND APPLIED SCIENCE
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The objective of this investigation was to characterize the constitutive behavior, physical aging, damage mechanisms and damage development in high temperature polymer matrix composites under various environmental and loading conditions. The aging induced volumetric shrinkage was measured and a model was proposed capable of predicting aging under any temperature history. In the case of monotonically loaded laminates a unique and simple general relationship was developed between applied load and crack density independent of lamination geometry and temperature and accounting for statistical variability. Under fatigue conditions a master curve was developed relating damage crack density and fatigue cycles, independent of layup and temperature.
- Polymer Chemistry
- Laminates and Composite Materials