Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Analysis of Thermomechanical Properties Considering the Thermal Expansion Anisotropy of Membrane-Type Fiber-Reinforced Composite Material

멤브레인 형 섬유강화 복합재료의 열팽창 이방성을 고려한 열 기계적 특성 분석

  • Jeong, Yeon-Jae (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Hee-Tae (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Jeong-Dae (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Oh, Hoon-Gyu (Maritime Research institute, Hyundai Heavy Industries Co. Ltd) ;
  • Kim, Yong-Tai (Maritime Research institute, Hyundai Heavy Industries Co. Ltd) ;
  • Park, Seong-Bo (Maritime Research institute, Hyundai Heavy Industries Co. Ltd) ;
  • Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
  • 정연제 (부산대학교 조선해양공학과) ;
  • 김희태 (부산대학교 조선해양공학과) ;
  • 김정대 (부산대학교 조선해양공학과) ;
  • 오훈규 ((주)현대중공업 선박연구소) ;
  • 김용태 ((주)현대중공업 선박연구소) ;
  • 박성보 ((주)현대중공업 선박연구소) ;
  • 이제명 (부산대학교 조선해양공학과)
  • Received : 2020.06.15
  • Accepted : 2020.11.03
  • Published : 2021.02.20
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Abstract

The membrane-type Liquefied Natural Gas (LNG) cargo tank is equipped with a double barrier to seal the LNG, of which the secondary barrier serves to prevent LNG leakage and mainly uses fiber-reinforced composite materials. However, the composite materials have thermal expansion anisotropy, which deteriorates shape distortion and mechanical performance due to repeated thermal loads caused by temperature changes between cryogenic and ambient during the unloading of LNG. Therefore, in this study, the longitudinal thermal expansion characteristics of the composite materials were obtained using a vertical thermo-mechanical analyzer, and the elastic modulus was obtained through the tensile test for each temperature to perform thermal load analysis for each direction. This is considered that it is useful to secure reliability from the viewpoint of the design of materials for a LNG cargo hold.

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References

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