Evaluation on The Fracture Toughness of Chopped Strand Reinforced ALS Matrix Composites

촙트 스트랜드 강화 ALS계 복합재료의 파괴인성 평가

  • 차용훈 (조선대학교 기계공학과(수송기계부품 공장자동화 연구 센터)) ;
  • 김덕중 (동아전문대학 자동차정비과) ;
  • 이연신 (송원전문대학 자동차과) ;
  • 성백섭 (조선대학교) ;
  • 채경수 (조선대학교)
  • Published : 1998.03.01


It is well known in the fracture mechanics community that the fracture toughness of brittle materials, such as ceramics, can be improved improves significantly when fibers are added into the material. This is because in presence of fibers the cracks cannot propagate as freely as it can in absence of them. Fibers bridge the gap between two adjacent surfaces of the crack and reduce the crack tip opening displacement, thus make it harder to propagate. Several investigators have experimentally studied how the length, diameter and volume fraction of fibers affect the fracture toughness of chopped strand reinforced matrix composite materials. In this paper, matrix used ALS, Arizona Lunar Simulant, types of fiber used carbon steels and stainless steels. To analyze quantitatively fiber reinforced ALS composites, experimental and analytical methods was progressed. Load-displacement curve is used to experimental method, and FEM analysis program using ABAQUS is used analytical method.