Composites Research

  • 제29권2호
  • /
  • Pages.85-89
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  • 2016
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  • 2288-2103(pISSN)
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  • 2288-2111(eISSN)
한국복합재료학회 (The Korean Society for Composite Materials)
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경사진 CFRP로 접합된 시험편에서의 Mode 1 형 파괴역학적 거동에 관한 연구

An Investigation on the Behavior of Fracture Mechanics as the Type of Mode I at Specimen Bonded with Tapered Carbon Fiber Reinforced Plastic

  • Lee, Jung-Ho (Department of Mechanical Engineering, Graduate School, Kongju National University) ;
  • Cho, Jae-Ung (Division of Mechanical & Automotive Engineering, Kongju National University) ;
  • Cheon, Seong Sik (Division of Mechanical & Automotive Engineering, Kongju National University)
  • 투고 : 2016.01.19
  • 심사 : 2016.04.29
  • 발행 : 2016.04.30
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초록

본 논문에서는 복합재료 접합부의 파손거동 예측을 하는 데에 있다. CFRP를 TDCB 형태로 가공하고, 형상계수에 따른 Mode 1 정적해석을 수행하였다. 시험편은 2, 2.5, 3, 3.5의 형상계수(m)들을 가진다. 연구결과로서 시편의 접합면이 탈락이 일어나기까지의 변위는 거의 비슷하게 나왔으나 이때의 반력은 형상계수 m = 3.5에서 가장 높게 나타났으며 이 반력은 412 N으로 m = 2와 비교하면 약 14% 개선된 반력을 보여주고 있다. 접착계면의 탈락과 반력에 관한 데이터는 CFRP구조설계와 그 안전설계에 이바지 할 수 있을 것으로 사료된다.

This paper aims at estimating the fracture behavior at the bonded part of composite material. CFRP is manufactured as the type of TDCB. The static analysis of Mode 1 due to the configuartion factor of m is carried out. Four kinds of specimens have the configuartion factor(m) of 2, 2.5, 3 and 3.5. As the study result, the displacements at specimens are shown to be similar each other in these four cases. At m of 3.5, the reaction force becomes highest as 412 N and is shown to be improved as much as 14% by comparing m of 2. The data on defection of the bonded interface and reaction force are thought to be contributed to the structural design of CFRP and the safe design.

키워드

참고문헌

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