Effect of plastic zone on the fatigue crack propagation behavior between two fatigue cracks

S. H. Song, B. H. Choi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this study, the fatigue crack propagation behavior in the stress interaction field between two different fatigue cracks is studied by experiment and finite element analysis. In the experiment, the offset distance between two cracks and the applied stress are varied to create different stress interaction fields. The size of the plastic zone area is used to examine the crack propagation path and rate. Three types of crack propagation in the interaction field were found by experiment, and the crack propagation behavior of two cracks was significantly changed as different stresses were applied. The size of the plastic zone obtained by finite element analysis can be used to explain crack propagation behavior qualitatively.

Original languageEnglish
Pages (from-to)225-231
Number of pages7
JournalExperimental Mechanics
Volume41
Issue number3
DOIs
Publication statusPublished - 2001 Sep

Keywords

  • Crack interaction
  • Crack propagation
  • Fatigue life
  • Finite element analysis
  • Plastic zone

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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