Strength of Composite-to-Aluminum Bonding and Bolting Hybrid Joints

복합재-알루미늄 이종재료 하이브리드 체결부 강도 특성에 관한 연구

  • 정재우 (경상대학교 항공기품기술연구소) ;
  • 김태환 (경상대학교 대학원 항공공학과) ;
  • 권진희 (경상대학교 기계항공공학부 항공기부품기술연구소) ;
  • 최진호 (경상대학교 기계항공공학부 항공기부품기술연구소)
  • Published : 2005.11.18

Abstract

Composite-to-aluminum joins were tested to get failure loads and modes for three types of joins; adhesive bonding, bolt fastening, and adhesive-bolt hybrid joining. Film type adhesive FM73 and paste type adhesive Cytec EA9394S were used for aluminum and composite bonding to make a double-lap joint. A digital microscope camcorder was used to monitor the failure initiation and propagation. It was found that the hybrid joining is an effective method to strengthen the joint when the mechanical fastening is stronger than the bonding as in the case of using the paste type adhesive. On the contrary, when the strength of the bolted joint is lower than the strength of the bonded joint as in the joint with the film type adhesive, the bolt joining contribute little to the hybrid joint strength.

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