Fracture behavior using AE method and reliability assessment of CFRP based on absorbed moisture |
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흡습된 CFRP의 AE에 의한 파과거동과 신뢰성 평가 |
남기우,김선진 |
부경대학교 재료공학과,부경대학교 기계공학과 |
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© 1996 The Korean Society of Ocean Engineers
Open access / Under a Creative Commons License
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Keywords:
Cfrp[Carbon Fiber Reinforced Plastic], AE[Acoustic Emission] Method, Fracture Toughness, Reliability Assessment, Weibull Distribution, Moisture Absorption |
핵심용어:
탄소섬유강화 복합재료, 음향방출법, 파괴인성, 신뢰성평가, Weibull분포, 흡습율 |
Abstract |
Recently carbon fiber reinforced plastic (CFRP) has been used structural materials in corrosive environment such as for water, chemical tank and pipes. However, mechanical properties of such materials may be change when CFRP and exposed to corrosive environment for long periods of time. The degradation behavior of carbon fiber/epoxy resin composite material in distilled water is investigated using acoustic emission (AE) technique, Fracture toughness tests are performed on the compact tension specimens that are pilled by two types of $[O_2/9O_2]_{3s}$ and $[O/9O]_6s$. During the testes, AE test was carried out to monitor the damage of CFRP by moisture absorption. The data was treated by 2-parameter Weibull distribution and the fracture surface was observed by scanning electron microscope. |
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