焊接结构断裂寿命估算的试验研究  

Experiment and study on estimation of fracture life of welded structures

作　　者：张宝昌[1] 白付平 焦伟[1] 孟繁荣[1] 

机构地区：[1]哈尔滨焊接研究所,黑龙江省水利水电勘测设计研究院

出　　处：《焊接学报》1994年第3期154-159,共6页Transactions of The China Welding Institution

摘　　要：以天然气输送管道和桥梁为典型构造，对其对接接头进行疲劳裂纹扩展速率的实测，并按国内外标准进行断裂寿命估算，绘测出应力幅与寿命的关系曲线，从而给出了焊接结构寿命估算的完整方法。The fatigue crack propagation rates of butt welded joints have been actuallymeasured with using natural gas pipeline and bridge as the typical structures.Thefracture life have been estimated according to the standards both domestic and abroad,and a curve of stress amplitude vs.life was obtained.A complete method forestimation of service life of welded structure is given in this paper.

关 键 词：断裂 疲劳裂纹扩展 寿命 焊接结构 

分 类 号：TG405[金属学及工艺—焊接]