Thickness and weld orientation effects on fatigue crack growth after a single tensile overload

被引：8

作者：

Gadallah, Ramy ^{[1
]}

Murakawa, Hidekazu ^{[2
]}

Shibahara, Masakazu ^{[1
]}

机构：

[1] Osaka Metropolitan Univ, Grad Sch Engn, Osaka, Japan

[2] Osaka Univ, Joining & Welding Res Inst, Osaka, Japan

来源：

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2023年 / 206卷

关键词：

Thickness; Weld orientation; Welding residual stress; Overload; Elastic-plastic fracture mechanics; Fatigue crack growth; STRESS INTENSITY FACTOR; PLASTIC ZONE SIZE; RESIDUAL-STRESS; SPECIMEN THICKNESS; LASER WELDS; STEEL; DEFORMATION; PROPAGATION; DISTRIBUTIONS; RETARDATION;

D O I：

10.1016/j.ijpvp.2023.105020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Numerical calculations were performed to investigate the effects of thickness and weld orientation on welding residual stress (WRS) and fatigue life after a single tensile overload (OL) using a centrally-cracked steel specimen. First, welding simulations were carried out to predict WRS due to the change in thickness and weld orientation. The WRS was then considered in elastic-plastic crack growth calculations in addition to the single tensile OL. A rigorous discussion was conducted to explain the effects of thickness and weld orientation on the state of the local stress ahead of the crack tip, crack driving force, and fatigue life.

引用

页数：19

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