Lifetime prediction in medium-cycle fatigue regime of notched specimens. (August 2016)

• Record Type: Journal Article
• Authors: Negru, R.; Șerban, D.A.; Marșavina, L.; Magda, A.
• Is Part Of: Theoretical and applied fracture mechanics. Volume 84(2016)
• Page Start: 140
• Page End: 148
• Publication Date: 2016-08
• Subjects: Lifetime estimation -- Theory of critical distances -- Volumetric method -- Strain energy density; Fracture mechanics -- Periodicals; 620.1126
• DOI: 10.1016/j.tafmec.2016.03.006
• Languages: English
• ISSNs: 0167-8442

Abstract

Highlights: Three methods were assessed to predict lifetime of notched components. Three notched components were considered (semi-circular and two V -notches). The predicted results are compared with experimental fatigue data. Good predictions were obtained for line method on TCD, volumetric method and SED. Predictions for V -notches are accurate than those on semicircular notches. Abstract: This paper assesses three methods (Theory of Critical Distances, Volumetric method and Strain Energy Density) for the lifetime prediction of notched components in medium-cycle fatigue. The predictions are compared with experimental fatigue data, obtained by authors by testing aluminium 2024-T3 specimens with semi-circular and two types of V -notches. The presented methods, based on simple FEM analysis, could successfully substitute time-consuming experimental fatigue tests.