한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제38권2호
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  • Pages.119-128
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  • 2010
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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고온습도 및 저온 환경이 복합재 접착 체결부 강도에 미치는 영향 연구

Hygrothermal Effect on the Strength of Carbon/Epoxy Composite Single-Lap Bonded Joints

  • 송민규 (경상대학교 대학원 항공우주공학과) ;
  • 권진회 (경상대학교 항공기부품기술연구소) ;
  • 최진호 (경상대학교 항공기부품기술연구소) ;
  • 김효진 (한국폴리텍 항공대학 항공정비과) ;
  • 송민환 (한국항공우주산업(주)) ;
  • 신상준 (한국항공우주산업(주)) ;
  • 변재현 (경상대학교 산업시스템공학부)
  • 투고 : 2009.10.27
  • 심사 : 2010.01.15
  • 발행 : 2010.02.01
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초록

본 논문에서는 다양한 방법으로 제작된 복합재 접착 체결부의 강도에 대한 온도 및 습도 환경의 영향을 연구하였다. 시편은 두 가지 종류의 일체성형 방법 외에 동시접착 및 이차접착 등 총 네 가지 방법으로 제작하였고, 상온건조, 고온습도 및 저온건조 환경 등 세 가지 환경에서 강도시험을 수행하였다. 전체적으로 고온습도 환경에서의 파손강도가 상온 환경에 비해 11~23% 가량 높게 나타났고, 저온 환경에서의 파손강도는 동시접착 체결부를 제외하고는 8~21% 가량 상온 강도보다 낮게 나타났다. 시험 환경에 따른 체결부의 강도 차이는 환경에 따른 접착제의 물성 변화가 주 원인인 것으로 분석되었다.

The hygrothermal effect on the strength of composite single-lap bonded joints were investigated. The specimens were manufactured in four different manufacturing methods and tested in three different environmental conditions. An interesting result is that the strengths of the joints in the elevated temperature and wet (ETW) conditions were found to be 11 ~ 23% higher than those in the room temperature and dry (RTD) environment. In contrast, the strengths of the joints in the cold temperature and dry (CTD) condition decrease by 8 ~ 21% compared to those in the RTD environment except for cobonded joint. The difference in the strength by testing environments is mainly attributed to the change of the material properties of adhesive by temperature and moisture.

키워드

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피인용 문헌

  1. Evaluation of Mechanical Properties of Carbon/Epoxy Composites Under In situ Low- and High-Temperature Environments vol.39, pp.6, 2015, https://doi.org/10.3795/KSME-A.2015.39.6.567