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A new approach to the prediction of fatigue notch reduction factorKf

Authors
Journal
International Journal of Fatigue
0142-1123
Publisher
Elsevier
Publication Date
Volume
18
Issue
2
Identifiers
DOI: 10.1016/0142-1123(95)00056-9
Keywords
  • Local Stress-Strain
  • Cyclic Property
  • Plastic Deformation
  • Fatigue Notch Reduction Factor

Abstract

Abstract From the point of view of energy, a fundamental relationship of local stress-strain at a notch is derived. Defining K f, the fatigue notch reduction factor, in terms of such factors as cyclic behaviour of material, plastic deformation of notch root and theoretical stress concentration factor, an equation for K f taking into consideration comprehensively is proposed, and verified by the results of experimental K f and then compared with the values of K f predicted from the Neuber-Kuhn and Peterson equations.

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