Characteristics and strength behaviour of laser hybrid welds on T- and butt joints considering European and international standards

On the field of the hybrid welding processes, a rapid technological development can currently be seen with the emphasis more and more laid on the combination of arc and laser beam processes. In this way, the main fields of the development are concentrating on such hybrid processes that are based on the application of a solid-state laser. The reason for this in the first place is that together with modern solid-state lasers (fibre or disc lasers), beam sources are available that provide high output while at the same time offering an excellent beam quality. Performing technological examinations for different materials and welding tasks is directly connected with the weld qualities and strengths produced depending on the type of joint and application. This presentation will serve as an overview on the results of the examinations on hybrid welded joints both concerning their special properties and their strength behaviour as well as the state of the development of regulations for the classification and evaluation of such welds.