A Crack Initiation Threshold Methodology in Fretting Fatigue

This work aims to develop a fretting crack initiation threshold methodology based on the application of high cycle fatigue (HCF) multiaxial models. The proposed methodology considers the use of multiaxial stress based models, which define safe and damage zones in an appropriate stress space, associated with a volume-averaging procedure. The methodology proved satisfactory in estimating the fretting fatigue limit of simple experiments using cylindrical contacts and was also able to capture the size effect phenomenon present in such tests.