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Degradation Characteristics of Filament-Winding-Laminated Composites Under Accelerated Environmental Test

필라멘트 와인딩 복합적층재의 환경가속 노화시험 평가

  • 김덕재 (한양대학교 대학원 기계공학과) ;
  • 윤영주 (국방과학연구소) ;
  • 최낙삼 (한양대학교 기계정보경영공학부)
  • Published : 2007.03.01

Abstract

Degradation behaviors of filament-winded composites have been evaluated under the accelerated environmental test of high temperature, water immersion and thermal impact conditions. Two kinds of laminated composites coated by an urethane resin have been used: carbon-fiber reinforced epoxy(T700/Epon-826, CFRP) and glass-fiber reinforced phenolic (E-glass/phenolic, GFRP). For tensile strength of $0^{\circ}$ composites, CFRP showed little degradation while GFRP did high reduction by 25% under the influence of high temperature and water However for water-immersed $90^{\circ}$ composites tensile strength of both CFRP and GFRP showed high reduction. Bending strength and modulus of $90^{\circ}$ composites were largely reduced in water-immersion as well as high temperature environment. Urethane coating on the composite surface improved the bending properties by 20%, however hardly showed such improvement for water-immersed $90^{\circ}$ composites. In case of shear strength and modulus, both CFRP and GFRP showed high reduction by water-Immersion test but did a slight increase by high temperature and thermal impact conditions.

Keywords

Laminated Composites;Water Immersion;Thermal Impact;Degradation;Tensile Strength;Bending

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Cited by

  1. Evaluation of Mechanical Properties of Carbon/Epoxy Composites Under In situ Low- and High-Temperature Environments vol.39, pp.6, 2015, https://doi.org/10.3795/KSME-A.2015.39.6.567