The interlaminar fracture of organic-matrix,woven reinforcement composites |
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| Affiliation: | 1. Naval Research Laboratory, Washington D.C., USA;2. Hexcel Corporation, Dublin, California, USA;3. B.F. Goodrich Company, Chemical Division, Cleveland, Ohio, USA;1. Institute of Biology, University of Siegen, 57076 Siegen, Germany;2. Institute of Biology, Freie Universität Berlin, 12163 Berlin, Germany;3. Department of Biochemistry and Molecular Biophysics, Kansas State University, 141 Chalmers Hall, Manhattan, KS 66506, USA;1. Yuvaraja''s College, Department of Biochemistry, Yuvraja''s College, University of Mysore, Mysore, Karnataka, 570-005, India;2. Post Graduate Department of Biotechnology, Teresian College, Affiliated to the University of Mysore, Mysore, Karnataka, 570-011, India;1. Surgical Outcomes and Quality Improvement Center, Department of Surgery and Center for Healthcare Studies, Feinberg School of Medicine and Northwestern Medicine, Northwestern University, Chicago, IL;2. American College of Surgeons, Chicago, IL;3. American Board of Surgery, Philadelphia, PA;4. Department of Surgery and Center for Surgery and Health Economics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA;5. Division of General Internal Medicine, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA;1. State Key Laboratory of Ocean Engineering and School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. Department of Civil and Environmental Engineering, Washington State University, Sloan Hall 117, Pullman, WA 99164-2910, USA |
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| Abstract: | A study has been made of the interlaminar (transverse) fracture of glass and graphite fabric composites. A double cantilever beam specimen was used and was width-tapered for constant change in compliance with crack length so that the fracture energy calculation is independent of crack length. It was found that the interlaminar fracture energy could be significantly increased either by the addition of elastomeric toughening agents to the epoxy matrix or by using a thermoplastic matrix resin instead of an epoxy. The largest increase in interlaminar fracture energy (approximately eight-fold) was obtained for an epoxy matrix/graphite fabric composite by the addition of elastomeric modifiers. |
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