An Experimental Study on the Tensile and Fatigue Strengths of SUS304L Lap Joint Weld at the Cryogenic Temperature

J. Ocean Eng. Technol. 2008;22(3):96-102.

Kim Kyung-Su,Boo Seung-Hwan,Park Chang-Youl,Cho Young-Gun,Lee Jeung-Soo

Dept. of Naval Architecture Engineering Inha University,Dept. of Naval Architecture Engineering Inha University,Dept. of Naval Architecture Engineering Inha University,Dept. of Naval Architecture Engineering Inha University,Hanjin Heavy Industries & C

SUS304L 겹침 용접부에 대한 극저온에서의 인장 및 피로강도에 관한 실험적 연구

김경수,부승환,박창열,조영근,이정수

인하대학교 선박해양공학과,인하대학교 선박해양공학과,인하대학교 선박해양공학과,인하대학교 선박해양공학과,한진중공업(주)

Keywords: LNG(Liquefied natural gas), Membrane, Lap joint weld, Tensile strength, Fatigue strength, S-N curve

핵심용어: 액화천연가스, 멤브레인, 겹침 용접, 인장강도, 피로강도, S-N 선도

Abstract

As LNG tank is operated around $-162^{circ}C$, an experimental approach on 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 d