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SUS304L 겹침 용접부에 대한 극저온에서의 인장 및 피로강도에 관한 실험적 연구
김경수(KYUNG-SU KIM),부승환(SEUNG-HWAN BOO),박창열(CHANG-YOUL PARK),조영근(YOUNG-GUN CHO),이정수(JEUNG-SOO LEE) 한국해양공학회 2008 韓國海洋工學會誌 Vol.22 No.3
As LNG tank is operated around -162 ℃ an experimental approach all the cryogenic temperature tensile and fatigue strengths of SUS304L lap joint weld is very important at the design stage of membrane type LNG tank. In this study, in order to estimate the tensile and fatigue strengths of SUS304L lap joint weld at cryogenic temperature condition, tensile and fatigue tests were conducted. Also, S-N curves are presented with statistical testing method recommended by JSME. As a result of the experimental approach, the design fatigue of fatigue strength is proposed and that is expected to be useful for membrane type LNG tank design.