Investigation of fusion welded butt joints in structural steels.

In the present paper research work is presented combining material related research, weld fabrication related research and research in the field of numerical analysis of welded joint performance. Elements belonging to this extensive combination are mechanical testing (tensile, impact), fracture mechanics testing of small scale and full thickness specimens, component testing including engineering defect assessment and numerical modelling using the finite element method. Examples are given for each of the above mentioned elements.