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Residual stress effects on fatigue crack growth in a Ti‐6Al‐4V friction stir weld
Author(s) -
PASTA S.,
REYNOLDS A. P.
Publication year - 2008
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2008.01258.x
Subject(s) - residual stress , materials science , welding , paris' law , friction stir welding , crack closure , joint (building) , metallurgy , stress concentration , structural engineering , composite material , fracture mechanics , engineering
Recent studies have illustrated a predominant role of the residual stress on the fatigue crack growth in friction stir welded joints. In this study, the role of the residual stress on the propagation of fatigue cracks orthogonal to the weld direction in a friction stir welded Ti‐6Al‐4V joint was investigated. A numerical prediction of the fatigue crack growth rate in the presence of the residual stresses was carried out using AFGROW software; reasonable correspondence between the predictions and the experimental results were observed when the effects of residual stress were included in the simulation.