A Novel Finite Fracture Mechanics Approach to Assess the Lifetime of Notched Components
International journal of fatigue(2023)
Abstract
A novel model is proposed to assess the fatigue lifetime of notched components under uniaxial loading conditions in the medium/high-cycle fatigue regime. It is based on the Finite Fracture Mechanics approach, previously proposed in static and fatigue limit frameworks, according to which failure occurs when a stress and an energy condition are simultaneously satisfied. Basquin's equations are employed to catch the variation of input parameters based on SN data of a plain and a notched sample. The criterion is validated against various experimental data sets from the literature, encompassing different notch shapes, loading conditions and materials.
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Key words
Fatigue life,Lifetime estimation,Finite fracture mechanics,Notch,Fatigue strength
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