Hybrid areas in components with a high fatigue life under stress induced by combinations of rolling, torsion and structural loads (C03)

The subproject C03 investigates the fatigue behavior of hybrid components under rolling contact stress. A crack simulation is added to the existing fatigue life model. The simulation calculates crack growth, starting from welding and forming defects. Critical defects, such as pores in the highly stressed material area, are investigated simulatively and experimentally and provide information on the fatigue behavior of the demonstrators. Analyses such as ultrasonic microscopy are used to evaluate the quality of the material and the process chain, and optimizations are fed back to the manufacturing subprojects. Furthermore, experimental investigations are carried out on the demonstrators subjected to rolling loads.

DFG Programme Collaborative Research Centres

Subproject of SFB 1153:  Process Chain for Manufacturing of Hybrid High Performance Components by Tailored Forming

Applicant Institution Gottfried Wilhelm Leibniz Universität Hannover

Project Heads Dr.-Ing. Florian Pape; Professor Dr.-Ing. Gerhard Poll