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

The Society of Naval Architects of Korea (대한조선학회)
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An Experimental Study on Mechanical Properties and Failure Behavior of Plywood

Plywood의 기계적 특성 및 파손 거동 분석에 관한 실험적 연구

  • Cha, Seung-Joo (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Jeong-Dae (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Jeong-Hyeon (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Oh, Hoon-Kyu (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)
  • 차승주 (부산대학교 조선해양공학과) ;
  • 김정대 (부산대학교 조선해양공학과) ;
  • 김정현 (부산대학교 조선해양공학과) ;
  • 오훈규 ((주)현대중공업 선박연구소) ;
  • 김용태 ((주)현대중공업 선박연구소) ;
  • 박성보 ((주)현대중공업 선박연구소) ;
  • 이제명 (부산대학교 조선해양공학과)
  • Received : 2018.11.05
  • Accepted : 2019.02.02
  • Published : 2019.08.20
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Abstract

The objective of this study is to analyze the mechanical properties of plywood used as a thermal insulating material for LNG CCS (Liquefied Natural Gas, Cargo Containment System). It is created by bonding an odd number of parallel and perpendicular direction for preventing contraction and expansion of wood. Also plywood is widely used as LNG CCS insulating material because of its durability, light weight and high stiffness. Since LNG CCS is loaded with liquid cargo, the impact load by sloshing during operation and the wide temperature range (room temperature, low temperature, cryogenic temperature) exposed during loading, unloading should be considered. The thickness of the plywood which is used for the membrane type MARKIII was selected as the thickness of the test specimen. In this present study, plywood is analyzed by the fracture behavior and mechanical properties of plywood by temperature and grain direction. In addition, it is necessary to analyze the fracture shape and predict the fracture strain by using regression model because the critical load may cause cracks inside the tank, which may affect the leakage of cryogenic liquid.

Keywords

References

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