The effect of load stepdown on fatigue crack arrest and retardation

Huseyin Sehitoglu, D. L. McDiarmid

Research output: Contribution to journalArticle

Abstract

The effect of a decrease in stress range on fatigue crack propagation behaviour in mild steel plate is investigated. The delay period between the arrest of a Stage II crack and its re-propagation is found to be a function of load stepdown ratio and specimen thickness. The length over which crack retardation is observed is related to the platic zone size associated with the initial high stress level. Non-propagating cracks occur when the ratio of the stepdown stress intensity range is approximately 0.6 times the initial stress intensity range, for the thicknesses tested.

Original languageEnglish (US)
Pages (from-to)55-60
Number of pages6
JournalInternational Journal of Fatigue
Volume2
Issue number2
DOIs
StatePublished - Apr 1980
Externally publishedYes

Fingerprint

Fatigue Crack
Crack
Cracks
Range of data
Fatigue Crack Propagation
Initial Stress
Steel
Fatigue crack propagation
Propagation
Carbon steel
Decrease
Fatigue cracks

ASJC Scopus subject areas

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

Cite this

The effect of load stepdown on fatigue crack arrest and retardation. / Sehitoglu, Huseyin; McDiarmid, D. L.

In: International Journal of Fatigue, Vol. 2, No. 2, 04.1980, p. 55-60.

Research output: Contribution to journalArticle

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