한국초전도ㆍ저온공학회논문지 (Progress in Superconductivity and Cryogenics)

  • 제12권3호
  • /
  • Pages.1-6
  • /
  • 2010
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  • 1229-3008(pISSN)
  • /
  • 2287-6251(eISSN)
한국초전도저온학회 (The Korean Society of Superconductivity and Cryogenics)
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극저온 환경에서의 섬유강화 복합재료의 열팽창 계수 측정을 위한스트레인 게이지의 보정에 관한 연구

Calibration of Strain Gauge for Thermal Expansion Coefficientof Fiber Reinforced Composites at Cryogenic Temperature

  • 이원오 (한국기계연구원 부설 재료연구소) ;
  • 이상복 (한국기계연구원 부설 재료연구소) ;
  • 이진우 (한국기계연구원 부설 재료연구소) ;
  • 엄문광 (한국기계연구원 부설 재료연구소)
  • 투고 : 2010.08.03
  • 심사 : 2010.09.05
  • 발행 : 2010.09.30
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초록

Since the fiber reinforced polymeric (FRP) composites are considered in next generation of space transportation systems, reliable thermal expansion properties should be well provided for structural design of composite materials. To obtain accurate mechanical behaviors at a cryogenic temperature, precise strain measurement and calibration must be provided. In this work, apparent strains (or thermal output) of temperature self-compensated strain gages were deliberately investigated for epoxy, CTBN modified epoxy and carbon fabric composite system from room temperature to liquid nitrogen temperature. Also, fourth-order thermal output curves were presented for the further calibration. The results showed that the thermal output is heavily dependent on test materials and a large amount of apparent strains were observed for the polymer resins.

키워드

참고문헌

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