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Reinforcing Characteristics on Volume and Shape of Ductile Short-Fiber in Brittle Matrix Composites

취성기지 복합재료에서 연성 단섬유의 함유량 및 형상에 관한 보강특성

  • Published : 2000.01.01

Abstract

The reinforcing effects of ductile short-fiber reinforced brittle matrix composites are studied by, measuring flexural strength, fracture toughness and impact energy as functions of fiber volume fraction and length. The parameters of fracture mechanics, K and J are applied to assess fracture toughness and bridging stress. It is found that fracture toughness is greatly, influenced by the bridging stress ill which fiber pull-out is occur. For the reinforcing effects as functions of fiber volume fraction($V_f$ = 1, 2, 3 %) and length(L = 3, 6. 10cm), the flexural strength is maximum at $V_f$ = 1% and both fracture toughness.

Keywords

Brittle Matrix Composites;Ductile Short-fiber;Volume Fraction;Aspect Ratio;Bridging Effect

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