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이제명(JAE-MYUNG LEE),백점기(JEOM-KEE PAIK),윤동렬(DONG-RYUL YOON) 한국해양공학회 2003 韓國海洋工學會誌 Vol.17 No.2
In this paper, a practical design criteria for judgement of crack occurrence in weldments is presented as a function of typical welding parameters, such as diffusible hydrogen, restraint intensity, and preheating temperature. The elastic analyses using the finite element techniques are employed in order to quantify the restraint intensities, numerically. Systematic experiments are also conducted in order to investigate the propensity of crack to typical welding parameters. The results of numerical estimation using the proposed method for the experimental specimens show the usefulness as a practical tool in welding induced crack problems with extensive uncertainties.