Abstmct-A phenomenological model of fatigue threshold in which the effects of stress level and crack length are taken into account for the crack opening conditions is proposed. A critical size of the initiation crack of the mode I fracture is determined. Based on the model the dependence between len
Fatigue notch factor and short crack propagation
β Scribed by Yves Verreman; Nathalie Limodin
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 339 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0013-7944
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Elastic-plastic and large-strain finite element analyses of propagating short cracks at notches under cyclic loading and the corresponding fatigue crack growths of short cracks have been studied. The specimens used in both numerical analyses and crack growth testing were semicircular notched and V-s
## Alldraet -Thef&urepraxgses of micro or small cracks may behave differently as suggested by ~ntinu~ medium mechanics. A minimum fracture unit should exist for a real ~1~ material, for any part sruaher than this unit fracture mechanics caunot be applied. Based on this idea, the elastic stress and