On this website you can read about me, Bertil Jonsson, and what I can help you within the area of simulation and analysis of fatigue in welded joints, my area of expertice.
This figure tries to illustrate my area of expertice:
For welded joints: different loading leads to different critical points concerning fatigue. Consequently, the quality needed in the weld is different in these cases and this must be reflected in the design process and later in fabrication in the work shop:
---- > principal to be used:
"Design and weld for purpose"