Crack closure effects on fatigue crack growth thresholds and remaining life in an hsla steel

Judith Todd Copley, L. Chen, E. Y. Yankov, S. Mostovoy

Research output: Contribution to journalArticle

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Abstract

The effects of crack closure on the near-threshold corrosion fatigue crack growth behavior of Mil S-24645 HSLA steel and its weld metal have been investigated in air, ASTM seawater at the free corrosion potential, and ASTM seawater at -0.8V and -l.OV (SCE) using frequencies of 10, 2, and 0.2 Hz, and a stress ratio, R - 0.1. Remaining life, in the presence and absence of crack closure, has been estimated as a function of applied stress range for a structure containing a 3-mm-deep surface semi-elliptical flaw.

Original languageEnglish (US)
Pages (from-to)37-44
Number of pages8
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume119
Issue number1
DOIs
StatePublished - Jan 1 1997

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All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

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