NONDESTRUCTIVE MEASUREMENT OF LONGITUDINAL RAIL STRESSES: APPLICATION OF THE ACOUSTOELASTIC EFFECT TO RAIL STRESS MEASUREMENT

An ultrasonic probe has been designed, evaluated and shown capable of measuring longitudinal stress changes in railroad rails. The probe utilizes the effect of applied stress on wave velocity (acoustoelastic effect) to determine the stress change. Both laboratory and field evaluation has shown that the probe is capable of measuring stress changes with an accuracy of plus or minus 6.9 MN sq m (plus or minus 1 ksi).

• Record URL:
  • https://railroads.dot.gov/elibrary/nondestructive-measurement-longitudinal-rail-stresses-final-report
• 
• Supplemental Notes:
  • Prepared for U.S. Department of Transportation, Federal Railroad Administration, Office of Research and Development, Washington, D.C.
• Corporate Authors:

  University of Oklahoma, Norman

  School of Aerospace, Mechanical and Nuclear Engineering
  Norman, OK  United States  73069
• Authors:
  • Egle, D M
  • Bray, D E
• Publication Date: 1978-1

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 113 p.

Subject/Index Terms

• TRT Terms: Measuring instruments; Nondestructive tests; Rail steel; Railroad rails; Stresses; Ultrasonic tests
• Old TRIS Terms: Rail steel metallurgy; Rail stress
• Subject Areas: Materials; Railroads;

Filing Info

• Accession Number: 00170421
• Record Type: Publication
• Source Agency: Federal Railroad Administration
• Report/Paper Numbers: FRA/ORD-77/34.1 Final Rpt.
• Contract Numbers: DOT-OS-40091
• Files: NTIS, TRIS, USDOT
• Created Date: Feb 16 1978 12:00AM