Investigation of the mixed-mode fatigue crack growth of a hot-rolled steel plate with a circular microdefect

Ki Jeong Seo, Byoung Ho Choi, Jeong Moo Lee, Seung Man Shin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The interaction between cracks and microdefects under mixed-mode loading conditions is important for precisely estimating the fatigue lifetime of a structure. In this study, the fatigue crack growth behavior of a crack with a circular microdefect is investigated under mixed-mode loading conditions experimentally using modified compact tension shear (CTS) specimens for various loading angles with/without a circular microdefect. The fatigue crack growth behavior observed through experiments is analyzed by linear elastic finite element (FE) analyses and the simulated crack path using the maximum tangential stress (MTS) criterion is compared and discussed with the crack path observed through experiments.

Original languageEnglish
Pages (from-to)1190-1199
Number of pages10
JournalInternational Journal of Fatigue
Volume32
Issue number7
DOIs
Publication statusPublished - 2010 Jul

Keywords

  • CTS specimen
  • Crack-microdefect interaction
  • Fatigue crack propagation
  • MTS criterion
  • Mixed-mode loading

ASJC Scopus subject areas

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

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