FATIGUE CRACK-GROWTH IN MULTIPASS BUTT-WELDED JOINTS OF MILD-STEEL

被引：3
|
作者：
NICOLETTO, G
机构：
[1] DIEM, University of Bologna, 40136 Bologna, Viale Risorgimento
来源：
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 1990年 / 42卷 / 03期
关键词：
D O I：
10.1016/0308-0161(90)90033-E
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fatigue crack growth rate properties obtained by testing multi-pass butt-welded joints in the through-the-thickness direction are presented along with a characterization of the mild steel base material. Edge-notched four-point-bending specimens are used to investigate R-ratio, specimen geometry and post-weld heat-treatment effects on fatigue crack growth rates. The pervasive influence of residual stresses on welded joint fatigue testing using the fracture mechanics approach is also discussed. For these multi-pass joints, conservative fatigue crack growth rates are obtained with post-weld heat-treated specimens. © 1990.
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页码：363 / 378
页数：16
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