Abstract
A study is presented concerning the influence of misalignment on the fatigue behaviour of transversely loaded butt welded joints. The following main types of misalignment were analysed: parallel misalignment between two plates with equal or different thickness, longitudinal seams in tubular connections and also angular misalignment. An LEFM approach was used to predict crack propagation life. The theoretical predictions for the joints between plates with equal thickness and with parallel and angular misalignment were compared against experimental results taken from the literature, and good agreement was found. In the case of parallel misalignment and equal plate thicknesses a crack initiation model was applied and the total S-N curves were obtained for the fatigue life of the joint.
Published Version
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