Failure behavior of quasi-isotropic carbon fiber-reinforced polyamide composites under tension |
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Authors: | Mazlina Mohd Tahir Wen-Xue Wang Terutake Matsubara |
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Affiliation: | 1. Department of Aeronautics and Astronautics, Engineering School, Kyushu University , Motooka Nishi-ku, Fukuoka 819-0395, Japan;2. Research Institute for Applied Mechanics, Kyushu University , Kasuga, Fukuoka 816-8580, Japan |
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Abstract: | In this paper, the microscopic failure behavior of quasi-isotropic carbon fiber-reinforced polyamide-6 (CF/PA6) laminates under tension was investigated experimentally. Laminates of two layups, namely 45°/0°/?45°/ 90°]s and 45°/0°/?45°/ 90°]2s, were made from CF/PA6 tapes of two different manufacturers and then subjected to tensile testing. Crack initiation and progression on the polished free edge of specimens were examined using optical microscopy, under several load levels. Crack growth behavior through the specimen width was also traced by observing the crack configurations in different sections in the specimen width direction. The effects of the spatial distribution of fiber on the microscopic damage events were elucidated. The difference in failure behavior between the present CF/PA6 laminates and conventional thermosetting CF/Epoxy laminate is discussed. |
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Keywords: | thermoplastic composites fiber distribution tensile test damage behavior |
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