Kalle Lipiäinen works as a postdoctoral researcher in the Laboratory of Steel Structures, LUT University, Lappeenranta, Finland. His research has focused on performance of ultra-high-strength steels. The main interest on research is the effects of local quality and geometry on the fatigue performance. The research combines experimental testing and characterizing local properties, from various techniques incl. cutting, welding, post-treatments, surface coatings and additive manufacturing etc., to understand cyclic loaded component behavior.