Predicting Fatigue in Welded Joints: New Theories and some Practical Experience
A few years ago we showed that the Theory of Critical Distances (TCD) and the Crack Modelling Method (CMM) could be used to predict the behaviour of welded joints of various geometries, in both steel and aluminum alloys. However we found that there were certain kinds of joints for which our methods, and also other methods which are commonly used, consistently underpredicted the fatigue strengths. Some explanations are suggested for this problem. Finally, mention is made of some of failure investigations in which the author has been involved, to illustrate the complexities which arise in real-world situations.
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
D. Taylor "Predicting Fatigue in Welded Joints: New Theories and some Practical Experience", Key Engineering Materials, Vols. 348-349, pp. 557-560, 2007