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Residual stresses analysis in plasma dressed welded joints
Ramalho, A. L.; Ferreira, J. A. M.; Branco, C. M.The presence of residual stresses in a structure influences his behaviour. Fatigue strength of welded joints is significantly influenced by the presence of residual stresses, of flaws and notch sharpness at the weld toe. Plasma dressing at the weld toe is frequently used to remove flaws and to lessen the notch sharpness at the weld toe. With this re-melt, the stress field in the weld toe is also profoundly modi...
Fatigue Behaviour of T Welded Joints Rehabilitated by Tungsten Inert Gas and Pl...
Ramalho, A.; Ferreira, J. A. M.; Branco, C. M.This paper concerns a fatigue study on the effect of tungsten inert gas (TIG) and plasma dressing in non-load-carrying fillet welds of structural steel with medium strength. The fatigue tests were performed in three point bending at the main plate under constant amplitude loading, with a stress ratio of R = 0.05 and a frequency of 7 Hz. Fatigue results are presented in the form of nominal stress range versus f...
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