The use of approximate strain-life fatigue crack initiation predictions

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18 Citations (Scopus)

Abstract

This paper describes the most commonly used approximate strain-life equations for prediction of fatigue crack initiation. Despite the development of advanced multiphase material memory models, the simple strain-life equations are useful 'first-shot' approximations of a component's resistance to fatigue crack initiation. There are, however, certain precautions that should be observed when using these equations. Selection of appropriate cyclic material properties is of utmost importance. These properties must be internally consistent; however, many values given in published literature are not. A sensitivity analysis is also presented for predicted fatigue life with respect to percentage error in cyclic material properties.

Original languageEnglish
Pages (from-to)351-356
Number of pages6
JournalInternational Journal of Fatigue
Volume16
Issue number5
DOIs
Publication statusPublished - 31 Jul 1994

Keywords

  • consistency
  • cyclic material behaviour
  • engineering design
  • sensitivity
  • strain life

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