Influences of Post Weld Heat Treatment on Fatigue Crack Growth Behavior of Transverse TIG Welded Al6013-T4 Aluminum Alloy Joint 횡방 향 TIG 용접 된 Al6013-T4알루미 늄 합 금 용접부의

There is growing interest in the structure use of aluminum alloys, for such applications as automotive and railway vehicles, bridges, offshore structure topsides, and high-speed ships. In all cases, welding is the primary joining method and fatigue is a major design criterion. However, it is well known that welded joint can exhibit poor fatigue properties. Thus, proper design guidelines are needed to ensure that fatigue failures are avoided in welded aluminum alloy structures1). Apart from basic design of new structures, there is also increasing interest in methods for assessing the remaining lives of existing structures. Prompted by difficulties experienced in reaching a consensus on fatigue performance of welde