Journal of the Korea Convergence Society (한국융합학회논문지)

Korea Convergence Society (한국융합학회)
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Convergence Study on Fracture at Joint Using Adhesive at Inhomogeneous Materials Bonded with CFRP

CFRP와 결합된 이종재료들에서의 접착제를 이용한 접합부의 파손에 관한 융합 연구

  • Kim, Jae-Won (Major in Automotive Engineering, Division of Mechanical & Automotive Engineering, Kongju National University) ;
  • Cho, Jae-Ung (Division of Mechanical & Automotive Engineering, Kongju National University)
  • 김재원 (공주대학교 기계자동차학부 자동차공학전공) ;
  • 조재웅 (공주대학교 기계자동차학부)
  • Received : 2018.03.15
  • Accepted : 2018.05.20
  • Published : 2018.05.28
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Abstract

In this study, CFRP and metal or nonmetal were bonded with adhesive and the fracture study on this material was carried out. CFRP at the upper side of specimen and metal or nonmetal were assigned at the lower side of specimen by using DCB specimen as the analysis condition. And it was desribed that the structural adhesive were bonded between both upper and lower sides. As this analysis result, the least equivalent stress was shown at the specimen bonded with aluminium. The maximum shear stress was shown to become lowest at the de-bonded CFRP specimen when titanium was used. In conclusion, it was shown that the deformation of specimen became lowest when titanium was used. On the basis of this study result, the esthetic sense can be shown as the fracture data of bonded interface using adhesive are grafted onto the real life.

본 연구에서는 CFRP와 금속 또는 비금속을 접착제로 접합시켜 이 재료에 대한 파손 연구를 수행하였다. 그 해석 조건으로는 DCB 시험편을 이용하여 시험편의 상부에는 CFRP, 시험편의 하부에는 금속 또는 비금속 재료로 지정하였고 두 상부와 하부 사이를 구조용 접착제로 부착하는 것을 묘사하였다. 이 해석 결과로는 알루미늄으로 접착된 시험편에서 가장 작은 등가응력 보였고 티타늄을 사용하였을 때 박리된 CFRP시험편에서의 최대 전단응력은 가장 낮음을 보였다. 결론적으로 티타늄을 사용하였을 때 시험편의 변형이 가장 작은 것을 알 수 있었고 본 연구 결과를 토대로 접착제를 이용한 접착 계면의 파손데이터를 실생활에 융합하여 그 미적 감각을 나타낼 수 있다.

Keywords

References

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