Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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Convergence Study on Durability Improvement due to Radius of Arch Type at CFRP Structure with Stacking Angle

적층각도를 가진 CFRP구조물에서의 아치형 반경에 따른 내구성 개선에 대한 융합 연구

  • Hwang, Gue-wan (Department of Mechanical & Automotive Engineering, Graduate School, Kongju University) ;
  • Cho, Jae-ung (Division of Mechanical & Automotive Engineering, Kongju University)
  • 황규완 (공주대학교 대학원 기계공학과) ;
  • 조재웅 (공주대학교 기계자동차 공학부)
  • Received : 2017.04.15
  • Accepted : 2017.07.20
  • Published : 2017.07.28
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Abstract

This paper investigates equivalent stress and deformation happening at inner fiber structure when the tensile force acts on the specimen with arch type composed of carbon fiber. The countless many each fiber is applied on the unidirectional axis at CFRP and has the high specific strength and stiffness by comparing with iron. In this study, the distribution of stress due to radius is investigated at the structure of arch type composed with the optimum stacking angle of $60^{\circ}$. And the durability is seen to be lower as the radius increases at the same stacking angle. By applying the result of this study to the design of structure with arch type, it can be devoted to the safe design for the prevention of damage and the durabilty improvement. And it is possible to be grafted onto the convergence technique at the designed factor and show the esthetic sense.

본 논문은 탄소섬유로 구성된 아치형태의 시험편에 인장각도가 작용할 때 내부의 섬유구조에서 발생되는 등가응력과 변형량에 관한 것이다. CFRP는 무수히 많은 각 섬유가 하나의 축으로 작용하며 이를 통해 금속과 비교할 때 높은 비강도와 비강성을 가질 수 있다. 본 연구에서 사전연구에 의해 최적 적층각도는 $60^{\circ}$로 구성된 아치형 구조에서 반경에 따른 응력분포를 결과를 검토하며 같은 적층각도에서 그 반경이 증가할수록 내구성이 낮아짐을 알 수 있다. 이를 통해 본 연구 결과를 적층 각도에 따른 아치형 구조의 설계에 적용함으로써, 파손방지와 내구성 향상을 위한 안전설계에 기여할 수 있으며, 패드 형상의 디자인적인 요소를 융합기술에 접목하여 그 미적인 감각을 나타낼 수 있다.

Keywords

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