Dynamic delamination fracture toughness of a graphite/epoxy laminate under impact |
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| Affiliation: | 1. Graduate Institute of Digital Learning and Education, National Taiwan University of Science and Technology, Taipei 106, Taiwan, ROC;2. Degree Program of E-Learning, College of Science, National Chiao Tung University, Hsinchu 300, Taiwan, ROC;3. Department of Computer Science, National Chiao Tung University, Hsinchu 300, Taiwan, ROC;1. Bharat University, Chennai, Tamil Nadu, India;2. Universiti Putra Malaysia, Serdang, Selangor, Malaysia;3. Velammal Engineering College, Chennai, Tamil Nadu, India;1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, CAS, Shenyang 110016, PR China;2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, PR China;3. Key Laboratory for Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, PR China;1. Florida Museum of Natural History, University of Florida, Gainesville, FL 32611, USA;2. Entomology and Nematology Department, University of Florida, Gainesville, FL 32611, USA;3. Department of Biology, University of Florida, Gainesville, FL 32611, USA;4. RAPiD Genomics, 747 SW 2nd Avenue, IMB#14, Gainesville, FL 32601, USA;5. Arthropoda Department, Zoological Research Museum Alexander Koenig, Adenauer Allee 160, Bonn 53113, Germany;6. Institute of Zoology and Evolutionary Biology with Phyletic Museum, Friedrich-Schiller-University Jena, Jena 07743, Germany;7. Laboratorio de Entomología, Departamento de Biología, Pontificia Universidad Javeriana, Bogotá, Colombia;8. Department of Organismic and Evolutionary Biology and Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA;9. Biology Department, City College of New York, New York, NY 10031, USA;10. Ph.D. Program in Biology, Graduate Center, City University of New York, New York, NY 10016, USA;11. Entomology Section, National Museum of the Philippines, Manila 1000, Philippines |
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| Abstract: | Dynamic delamination fracture toughness in a [90/0]5s T300/934 graphite/epoxy laminate was investigated using impact loading. Delamination cracks of three different sizes were embedded at the mid-plane of the composite specimen. The threshold impact velocity that causes propagation of the delamination crack was used in the dynamic analysis with the finite element method. From the finite element solution, the time-history of the strain energy release rate was calculated. The critical strain energy release rate was taken to equal the maximum value of the response history. |
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