Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Cryogenic Mechanical Characteristics of Laminated Plywood for LNG Carrier Insulation System

LNG운반선 방열시스템에 적용되는 적층형 플라이우드의 극저온 기계적 특성 분석

  • Kim, Jeong-Hyeon (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Park, Doo-Hwan (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Choi, Sung-Woong (Korea Institute of Machinery and Materials (KIMM), LNG Cryogenic Technology Center) ;
  • Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
  • 김정현 (부산대학교 조선해양공학과) ;
  • 박두환 (부산대학교 조선해양공학과) ;
  • 최성웅 (한국기계연구원 LNG극저온기계기술시험인증센터) ;
  • 이제명 (부산대학교 조선해양공학과)
  • Received : 2016.06.17
  • Accepted : 2017.06.16
  • Published : 2017.06.30
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Abstract

Plywood, which is created by bonding an odd number of thin veneers perpendicular to the grain orientation of an adjacent layer, was developed to supplement the weak points such as contraction and expansion of conventional wood materials. With structural merits such as strength, durability, and good absorption against impact loads, plywood has been adopted as a structural material in the insulation system of a membrane type liquefied natural gas (LNG) carrier. In the present study, as an attempt to resolve recent failure problems with plywood in an LNG insulation system, conventional PF (phenolic-formaldehyde) resin plywood and its alternative MUF (melamine-urea-formaldehyde) resin bonded plywood were investigated by performing material bending tests at ambient ($20^{\circ}C$) and cryogenic ($-163^{\circ}C$) temperatures to understand the resin and grain effects on the mechanical behavior of the plywood. In addition, the failure characteristics of the plywood were investigated with regard to the grain orientation and testing temperature.

Keywords

References

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