The paper investigates the effects of laser cutting on the fatigue properties of S960QL high strength steel. Two features of cut edge were taken into consideration. The cut edge profile, as surface grooves left by the cutting process act as stress concentrators, and the size and properties of heat affected zone, as crack growth parameters in this zone significantly differ from those in base material. Experimental data enabled us to formulate a short crack growth computational model while considering the effects of microstructure, cut edge profile and fatigue properties of heat affected zone.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 12419606In the context of the invited lectures in the professional trade fair Welding and cutting, we present a professional public the results of our research. They have been presented the results of high-cycle fatigue test of specimens, which were prepared by the procedure of cutting with plasma and laser, cutting at different speeds. Results shown, connecting the cut edge quality, cutting parameters and the dynamic strength of the specimens have been particularly interested in representatives from the industry.
B.04 Guest lecture
COBISS.SI-ID: 12305942