Effect of residual stress redistribution and weld reinforcement geometry on fatigue crack growth of butt welded joints

Journal article (2020)

Authors

Amir Reza Shahani Shahani K.N. Toosi University of Technology
Iman Shakeri Shakeri K.N. Toosi University of Technology
C.D. Rans Structural Integrity & Composites - Aerospace Engineering
Research Group
Structural Integrity & Composites (Aerospace Engineering) (TU Delft)
Copyright: © 2020 Amir Reza Shahani, Iman Shakeri, C.D. Rans
DOI: https://doi.org/10.1016/j.ijfatigue.2020.105780
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Published Date

2020-10

Language

English

Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Structural Integrity & Composites

Abstract

Redistribution of residual stress during crack growth in butt welded joint of Al5083-H111 was studied. Furthermore, the effect of post weld heat treatment and removing the weld reinforcements on fatigue crack growth rate was investigated. Three dimensional simulations of welding process and fatigue crack growth were conducted. It was shown that removing the weld reinforcements causes an increase in the residual stress. A correlation between the fatigue crack growth rate data of welded joints can be obtained with that of the parent metal by considering the weld geometry and redistribution of residual stresses in calculation of stress intensity factor.

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