Propagation of "small fatigue crack" initiated from notch-root

Furuya Yasubumi, Shimada Heihachi

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Recently, early stage of initiated fatigue crack propagation, so-called, "small crack" propagation behavior from notch-root is becoming more and more important for the developement of improved prediction of fatigue life of structural components. In the present paper, fine-grid-method which was already presented in the previous paper was applied to this problem. Special attention was given to the crack-tip strain changes of "small crack" engulfed in the plastic field of the notch. The relationship between fatigue crack propagation rate, da dN, and stress intensity factor range, ΔK, as well as local crack-tip strain range, Δε{lunate}T, which was previously proposed by the authors were investigated.

Original languageEnglish
Pages (from-to)41-48
Number of pages8
JournalEngineering Fracture Mechanics
Volume19
Issue number1
DOIs
Publication statusPublished - 1984

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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