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Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/1758

Title: Effect of weld residual stresses and their re-distribution with crack growth during fatigue under constant amplitude loading.
Authors: Liljedahl, CDM
Zanellato, O
Fitzpatrick, ME
Lin, J
Edwards, L
Keywords: Neutron Diffraction
Residual Stresses
Fatigue
Welding
Finite Element Method
Crack Propagation
Issue Date: Apr-2010
Publisher: Elsevier
Citation: Liljedahl, C. D. M., Zanellato, O., Fitzpatrick, M. E., Lin, J., & Edwards, L. (2010). Effect of weld residual stresses and their re-distribution with crack growth during fatigue under constant amplitude loading. International Journal of Fatigue, 32(4), 735-743.
Abstract: In this work the evolution of the residual stresses in a MIG-welded 2024-T3 aluminium alloy M(T) specimen during in situ fatigue crack growth at constant load amplitude has been measured with neutron diffraction. The plastic relaxation and plasticity-induced residual stresses associated with the fatigue loading were found to be small compared with the stresses arising due to elastic re-distribution of the initial residual stress field. The elastic re-distribution was modelled with a finite element simulation and a good correlation between the experimentally-determined and the modelled stresses was found. A significant mean stress effect on the fatigue crack growth rate was seen and this was also accurately predicted using the measured initial residual stresses. © 2010, Elsevier Ltd.
URI: http://dx.doi.org/10.1016/j.ijfatigue.2009.10.012
http://apo.ansto.gov.au/dspace/handle/10238/1758
ISSN: 0142-1123
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