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Journal of Reinforced Plastics and Composites
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Fracture Propagation in Composites with Biaxial Fiber Reinforcement

Wenming Zhao

Department of Civil and Environmental Engineering Clarkson University Potsdam, NY 13699-5710, USA

Levon Minnetyan

Department of Civil and Environmental Engineering Clarkson University Potsdam, NY 13699-5710, USA levon{at}clarkson.edu

Christos C. Chamis

NASA-Glenn Research Center at Lewis Field Cleveland, OH 44135, USA

Fracture characteristics such as damage progression, work of fracture, ultimate fracture loads, and failure modes are evaluated by computational simulation for composites with biaxial braided fiber reinforcements. Several Graphite–Epoxy Mode I compact tension (C(T)) specimens with different biaxial fiber orientations are modeled and simulated. Damage initiation, growth, and propagation processes at the microscopic level are tracked, enabling a more insightful interpretation of the test results. The effects of ply-layup with various orientations of the braid axis with reference to the notch directions are investigated with respect to their influences on damage and fracture progression characteristics. Results validate the computational simulation method and identify fracture characteristics for biaxially reinforced composites.

Key Words: braided composite • C(T) specimen • notch angle • computational simulation • fracture characteristics

Journal of Reinforced Plastics and Composites, Vol. 23, No. 2, 221-234 (2004)
DOI: 10.1177/0731684404031654
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Digg Digg   Add to Reddit Reddit   Add to Technorati Technorati    What's this?