材料科学
对焊
焊接
激光器
电弧焊
疲劳试验
激光束焊接
疲劳极限
复合材料
残余应力
机械工程
冶金
结构工程
工程类
光学
物理
标识
DOI:10.1533/9781845699765.218
摘要
Abstract: A description of fatigue in laser welds is presented in this chapter. The processes of laser welding and hybrid laser arc welding are discussed briefly. Properties of laser welds are summarized related to their influence on fatigue resistance including comparisons to conventional welding techniques. The advantages of laser and hybrid laser welding are presented including a description of applications where laser welding can be used advantageously. The results of fatigue studies of several common connection details are presented including: butt-welds, T and double T joints, lap welds and stake welds used in sandwich panels. The large variation in fatigue test results which are dependent on material and process parameters are demonstrated. Fatigue testing of connections fabricated with new materials and processes is essential. Research on fatigue response of laser welded connections is active.
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