Every time before a new material is introduced to production with welding and joining, a lot of investigations have to be carried out to evaluate the weldability of the material and feasibility of implementing the material in production.
From time to time, material suppliers may be changed even for on-going production at the assembly plants. This often needs evaluation of the weldability of materials from the new suppliers in order to maintain weld quality and production stability.
SORPAS has been used as a powerful tool to evaluate the weldability of materials both during the research and development and for production maintenance.
One of the most commonly encountered weldability problem in automotive industry is the three-sheet spot welding with a thin low carbon steel sheet and two thicker higher strength steels.
Publication on Welding journal 2011: Three-Sheet Spot Welding of Advanced High-Strength Steels.