Random microstructural effects on fatigue accumulation

K. Sobczyk, B. F. Spencer

Research output: Contribution to journalArticlepeer-review


In this paper we combine the known empirical information about the effects of microstructure (especially grain size) on fatigue with the appropriate description of their random variations. First, the most essential microstructural features of fatigue (extracted from the available experimental work) are briefly presented. Then, the statistical problems concerned with quantifying the microstructure are discussed, and the generalization of the associated empirical equations is proposed. This generalization takes into account the higher-order statistical moments of grain sizes as well as their probability distributions.

Original languageEnglish (US)
Pages (from-to)521-530
Number of pages10
JournalInternational Journal of Fatigue
Issue number8
StatePublished - 1995
Externally publishedYes


  • averaging
  • grain size
  • mean grain size
  • microstructure
  • probability distributions of grains
  • randomness in fatigue
  • short cracks

ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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