Recording of Elevated Temperature Fatigue Crack Growth Data by DCPD System

N. Ramachandran, N. Arakere, T. Goswami

Research output: Contribution to journalArticlepeer-review

Abstract

The growth of "long" fatigue cracks, in α-β titanium alloy forging, subjected to cyclic stresses, is studied in this paper. The fatigue crack growth rate (FCGR) data were recorded at room temperature, 350, 450, 550 and 650°F using the Direct Current Potential Difference (DCPD) technique. The DCPD method, used in this investigation, was found to record and correlate the potential difference in terms of crack growth rate (da/dN) and Mode I stress intensity factor range satisfactorily. Various factors related to error minimization and calibration equations for compact tension specimens have been elaborated. Also discussed were the means to enhance the accuracy of the data by the DCPD system for elevated temperature fatigue crack growth rate testing.

Original languageAmerican English
Pages (from-to)367-370
Number of pages4
JournalHigh Temperature Materials and Processes
Volume19
Issue number5
DOIs
StatePublished - Aug 2000

ASJC Scopus Subject Areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Physical and Theoretical Chemistry

Keywords

  • Technology
  • Engineering
  • Chemical Technology
  • TP1-1185
  • Checmicals: Manufature, use, etc.
  • TP200-248

Disciplines

  • Biomedical Engineering and Bioengineering
  • Engineering
  • Industrial Engineering
  • Operations Research, Systems Engineering and Industrial Engineering

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