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남궁재관,홍재학 한국산업안전학회 1990 한국안전학회지 Vol.5 No.3
In this study, the transient temperature distribution of welded zone was analyzed by Finite Element Method for the optimal design of weldment. This study was carried out for the steel plate 8㎜ thick, 100㎜ wide, 100㎜ long that butt weld. The weld was made with a heat input of 2,250 joule/㎝(arc current : 180 amperes : arc voltage : 25 volts : and arc travel steed : 0.28 ㎝/sec). In the analysis of temperature, cooling in the welded zone by the conduction between materal was almost completed at 600 sec when a unique temperature field was formed. after this, the material was gradually cooled by the heat transfer to the circumference. In the early phase the temperature in base metal zone is little changed. but after the rise in temperature the whole area is cooled gradually.