Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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EFFECT OF SURFACE ROUGHNESS ON ADHESIVE STRENGTH OF HEAT-RESISTANT ADHESIVE RTV88

  • Cho, Tae-Min (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Choo, Yeon-Seok (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Min-Jung (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Oh, Hyeon-Cheol (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Byung-Chai (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Park, Tae-Hak (Agency for Defense Development) ;
  • Shin, Young-Sug (Agency for Defense Development)
  • Published : 2008.11.05
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Abstract

In this study, effects of surface roughness on adhesive strength of heat-resistant adhesive RTV88 were examined. Sandblast was used to generate rough surfaces on aluminum adherends, and then tensile-shear tests of Al/RTV88 single lap joints were performed. The shear strength was shown to be affected by the surface roughness. Effective area, peel failure area, and cohesive failure area were introduced to explain the effects of surface roughness on the adhesive strength. An empirical relation for the failure force was proposed based on these parameters and verified by the test results.

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