ABSTRACT
The mechanical properties of welded joints are influenced by the base and filler metal as well as the execution of the welds. However, the design formulas according to EN 1993-1-8 and part 1–12 so far only considers the influence of the mechanical properties of the base metal. The different manufacturing processes of the steels are not taken into account either, nor the execution parameters used. As part of the ongoing AiF FOSTA research project P1020, a design approach is being developed to address the actual mechanical properties of welds. For this purpose, a new test specimen was developed with which the influence of the cooling time t 8/5 on the load-bearing and deformation behaviour of welds can be systematically investigated and statistically evaluated. In addition, dilatometer investigations were carried out to examine the influence of the manufacturing parameters on the properties of the heat-affected zone, representative for a large number of possible execution parameters.
