Fatigue performance of AAR class A railroad wheel steel at ambient and elevated temperatures

Details

• Creators:
  McKeighan, P C ; McMaster, F J ; Gordon, J E
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.) ; Southwest Research Institute ; United States. Department of Transportation. Federal Railroad Administration
• Subject/TRT Terms:
  • Atmospheric temperature
  • Fatigue limit
  • Fatigue tests
  • Heat convection
  • High temperature
  • Railroad cars
  • Sine curves
  • Specimens
  • Steel
  • Stress ratio
  More +
• Publication/ Report Number:
  IMECE2005-82519
• Resource Type:
  Proceedings
• Geographical Coverage:
  United States
• Corporate Publisher:
  American Society of Mechanical Engineers
• Abstract:
  This paper reports on tests to measure the effect of temperature on fatigue performance of railroad wheel steel. Classical stress-life (S-N) curves were developed for AAR Class B wheel steel with specimens removed from the tread areas of an as-forged railcar wheel. The specimen geometry was a standard hourglass fatigue test specimen with a low stress concentration of 1.05. Fatigue testing was performed at stress ratios of -1.0, 0.05, 0.5 and 0.7. Testing was performed at ambient, 500 deg F, and 1000 deg F using high current resistance or convection methods. Endurance limit data was obtained for all R-ratios, although for the 1000 deg F condition, there did not appear to be a clear endurance limit transition. The sines parameters, A and alpha, were estimated using these endurance limit data.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/8989/dot_8989_DS1.pdf
• File Type:
  [PDF - 2.50 MB]
• Collection(s):
  Volpe Center ; Federal Railroad Administration
• Main Document Checksum:
  urn:sha-512:3c4b70c0be61887581842c44098f1b7d428417837a423424901441f1d624e881702fb03268a9eb11415a5fa3881cc38bf8ceddd46cfafa58e77dee0d21305bb0