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KOGAS Pilot LNG 저장탱크 내조 멤브레인 실거동 연구
김영균(Y.K. Kim),오병택(B.T. Oh),홍성호(S.H Hong),김지훈(J.H. Kim),김석순(S.S. Kim),윤인수(I.S. Yoon) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.11
A membrane unit for Liquefied Natural Gas(LNG) storage tank is a specifically designed structural member, which completely prevents undesirable LNG leakage. Such membrane units are interiorly mounted to the sidewall and bottom of an LNG storage tank. Therefore, membrane units have to endure gas and liquid pressures of LNG, and thermal stresses which derived from contact with cryogenic liquid having a temperature of -162℃. It is of importance to assure the strengths of membrane under LNG temperature by experimental stress analysis. In this paper, parameters which should be considered when strains are measured at -162℃, are discussed test results with the characteristics of strain gages, temperature sensor, adhesive and lead wire. And on the basis of these results, we developed the strain measurement system for membrane and measured membrane strains by using th is system.