Iosipescu shear properties of graphite fabric/epoxy composite laminates Room temperature mechanical tests only were performed by Hitco the results are presented. The panels were fabricated for testing on NASA/Ames Research Center's Composites Modification Program. The current state-of-the-art resin system selected was Fiberite's 934 Epoxy the advanced resin systems evaluated were Phenolic, Phenolic/Novolac, Benzyl and Bismaleimide. Three weaves were evaluated a balanced plain weave, a balanced 8- harness satin weave, and a semiunidirectional crowfoot satin weave. A detailed examination of the Young's modulus and stress distributions near the crack tip is carried out which provides insight into material behavior at cryogenic temperatures.įabrication and physical testing of graphite composite panels utilizing woven graphite fabric with current and advanced state-of-the-art resin systems Two-dimentional generalized plane strain finite element models are developed to study the effects of residual thermal stresses and cracks on the mechanical behavior of CFRP woven laminates. Cracks are considered to occur in the transverse fiber bundles and extend through the entire thickness of the fiber bundles. This paper examines the thermal-mechanical response of satin weave carbon fiber reinforced polymer (CFRP) laminates with internal and/or edge cracks subjected to uniaxial tension load at cryogenic temperatures. Thermal-Mechanical Response of Cracked Satin Weave CFRP Composites at Cryogenic Temperatures
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