The fatigue life evaluation methods (LPV) developed at WWHK in recent years have so far been limited purely to the transition between LCF (Low Cycle Fatigue) and HCF (High Cycle Fatigue) and to the HCF field. This has recently led to controversial discussions regarding the exploitation of the potential of LPV, which is why comprehensive investigations are being carried out within the scope of this research project. The fact that the procedures and methods have not yet been extended to the VHCF (Very High Cycle Fatigue) field is due to the fact that the necessary testing infrastructure was not available at the WWHK. Thanks to the approval of the large-scale equipment application INST 252/21-1, a resonance testing system was procured and put into operation, which makes it possible to also achieve numbers of cycles in the VHCF range in a technically justifiable time frame.

The aim of the research project is to develop the LPV for use in the VHCF range and to implement influences regarding deformation rate and stress-related mechanisms in mathematical approaches and to validate the prediction quality through experiments.

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