Proceedings of the Korean Society For Composite Materials Conference (한국복합재료학회:학술대회논문집)

The Korean Society for Composite Materials (한국복합재료학회)
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Tensile Properties of CERP Fabric/Unidirectional Composites under Cryogenic Environment

극저온 환경에서 탄소섬유강화 직조/일방향 복합재료의 인장 물성 측정

  • 김명곤 (한국과학기술연구원 항공우주공학전공 대학원) ;
  • 김철웅 (한국과학기술연구원 항공우주공학전공 대학) ;
  • 강상국 (한국과학기술연구원 항공우주공학전공 대학) ;
  • 김천곤 (한국과학기술연구원 항공우주공학전) ;
  • 홍창선 (한국과학기술연구원 항공우주공학전공)
  • Published : 2003.10.01
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Abstract

This research aims to measure mechanical tensile properties of CFRP composites for cryogenic tank material. Through the cryogenic chamber, tensile tests are peformed under cryogenic temperature for graphite/epoxy fabric specimen aged at $-150^{\circ}C$ for 30hrs with load and graphite/epoxy unidirectional specimen 3-cycled from RT to $-100^{\circ}C$ with load. For graphite/epoxy fabric specimen, tensile modulus showed to increase after aging at cryogenic temperature(CT) while to decrease after aging at room temperature(RT) and tensile strength is more decreased after CT-aged than at RT-aged. For graphite/epoxy unidirectional specimen, tensile modulus was almost not changed after 3-cycling but strength showed the trend of decrease as increase the number of cycling.

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