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A Study on the Surface Treatment of Prepreg with $Ar^+$ Ion to Increase Mode I Fracture Characteristics of Fiber-Reinforced Composites

섬유강화 적층복합재의 열림모드 파괴특성 향상을 위해 $Ar^+$ 이온도움반응법을 적용한 프리프레그의 표면처리 연구

  • Published : 2000.11.01

Abstract

In this work, the effect of surface treatment of prepreg on the mode I fracture behavior was studied. Unidirectional (0-deg) double cantilever beam (DCB) specimens were used for fracture tests. Two groups of DCB specimens were made: the first group was made of prepregs surface-treated by Ar(sup)+ ion beam under oxygen environment and the second group was made of regular prepregs. For both groups, fracture resistance curve (R-curve) was determined and compared to each other, Results showed that resistance behavior of the first group is better than that of the second group. That is, mode I fracture toughness, G(sub)Ic of the first group is 24% larger than that of the second group. SEM examination shows that the improvement of G(sub)Ic is due to the increase of interfacial strength between plies.

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