Abstract
Abstract : The mechanics of woven fabric-based laminated composites is complex. Then, many researchers have studied woven fabric CFRP materials but fracture resistance behaviors for composites have not been still standardized. It also shows the different behavior according to load and fiber direction. Therefore, there is a need to consider fracture resistance behavior in conformity with load and fiber direction at designing structure using woven CFRP materials. In this study, therefore, the tensile strength and resistance for plain-weave CFRP composite materials were investigated under various different angle condition(load to fiber angle: 0°, 15°, 30°, 45°). Tensile strength and fracture toughness tests were carried out under mode I transverse crack opening load by using compact tension specimens. Key words Plain weave CFRP, Transverse crack, Failure strength, Fracture toughness 1.서 론 최근 복합재료는 해양수송기, 풍력발전 분야 및 차량의 경량화를 위해 주요 부품들의 중량 감소에 따른 연비향상, 제동 및 조향에 따른 에너지 절약 및 이산화탄소 배출을 최소화 하는 장점 때문에 그 수요가 증가하고 있다
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