CHARACTERIZATION OF RESIDUAL STRESS AND TEXTURE IN CAST STEEL RAILROAD WHEELS. FINAL REPORT

Residual stress and texture were characterized in the rim of a cast steel railroad wheel, using both an electromagnetic-acoustic transducer (EMAT) and a piezoelectric transducer. Orthogonally polarized shear-horizontal waves were propagated through the thickness of the rim, and arrival times measured (in pulse-echo) with a precision of about 0.00001. The difference in arrival times (birefringence) is related to the difference of principal stresses and also to texture. The wheel had been sawcut in a previous experiment; the residual stress had been relieved at the sawcut. The birefringence was measured at the sawcut and subtracted from the birefringence measured at stressed regions. This allowed the authors to map out variations in stress around the circumference of the wheel. the circumference of the wheel. Stresses measured with the agreed to within 10 MPa.

• Corporate Authors:

  Butterworth Scientific Limited

  Journals Division, P.O. Box 63, Westbury House, Bury
  Guildford, Surrey  England  GU2 5BH

  Federal Railroad Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Clark, A V
  • Fukuoka, H
  • Mitrakovic, D V
  • Moulder, J C
• Publication Date: 1986

Media Info

• Pagination: p. 281-286
• Serial:
  • Ultrasonics
  • Volume: 24
  • Issue Number: 5
  • Publisher: Butterworth Scientific Limited

Subject/Index Terms

• TRT Terms: Cast steel; Electromagnetism; Piezoelectricity; Railroad cars; Refraction; Residual stress; Sawing; Wheels
• Old TRIS Terms: Birefringence; Saw cutting
• Subject Areas: Bridges and other structures; Highways; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00480684
• Record Type: Publication
• Files: TRIS, USDOT
• Created Date: Mar 31 1989 12:00AM