Phase Transformation Theory Applied to Predict Fatigue Crack Propagation in Solid Materials

Yao Yao*, Leon M. Keer, Morris E. Fine

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Mechanical deformation of a solid during fatigue cycling is broadly defined a phase transformation, because defects are produced that increase its internal energy. Change in the defect structure, crack initiation and growth are also examples Of phase transformations. Many of the concepts of phase transformation theory are applicable to fatigue crack nucleation and propagation. The physical meaning of fatigue crack propagation in solid materials is studied by using energy considerations. Phase transformation theory is applied to predict the fatigue crack propagation rate in metals and alloys. The fatigue crack propagation rates predicted is compared with experimental data for different steels and aluminum alloys to demonstrate that the prediction of the theory agrees reasonably well with experimental results. The theory is applicable to predict fatigue crack propagation in solids under cyclic stress with corresponding experimental data.

Original languageEnglish (US)
Title of host publicationFatigue of Materials
Subtitle of host publicationAdvances and Emergences in Understanding
PublisherWiley-Blackwell
Pages289-298
Number of pages10
ISBN (Electronic)9781118013373
ISBN (Print)9780470943182
DOIs
StatePublished - Nov 11 2010

Keywords

  • Crack propagation
  • Energy
  • Fatigue
  • Phase transformation
  • Solid material

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)

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