Optimization of Discontinuous Fiber Compositesby Victor C. Li, Univ of Michigan, United States,
M. Maalej, Univ of Michigan, United States,
T. Hashida, Univ of Michigan, United States,
Abstract: Discontinuous Random Fiber Reinforced Composites (DRFRC) exhibit different behaviors depending on their microstructural properties. Small fraction of fiber rupture can have a beneficial effect on the tensile and fracture energy properties of the composite. This paper briefly summarizes the results of an analytical model that predicts the pre-peak and post-peak bridging stress-COD relationship which accounts for fiber pull-out and rupture. The model can be used to optimize the design of DRFRC in terms of composite tensile strength and fracture energy.
Subject Headings: Fiber reinforced composites | Fabrics | Ultimate strength | Optimization models | Material tests | Cracking
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