COMPARISON OF TWO EVALUATION METHODS OF RESIDUAL STRESS CONDITIONS IN RAILS

SRAVNENIE DVUKH METODOV OTSENKI OSTATOCHNOGO NAPRIAZHENNOGO SOSTOIANIA REL'SOV

During the periodic determination of the level of residual stresses in rails, the method of longitudinal section of rail samples along the neutral axis of the rail web is used widely on a length of 400 mm, by measuring the slot gapping (or convergence). A more complete information can be obtained using the method of a cut-out of a template, with the subsequent tensile measurement of deformations, which arise during the relieving of the residual stress. The resulting residual stress sheet on the rail surface has a very complex character. In order to determine the maximum value of residual stresses on the head surface, in the web, and in the middle part of the rail flange, a statistical processing of results of residual stresses by both methods was used. It was found that it was not possible to determine with sufficient accuracy the stress magnitudes due to the complex character of distribution of residual stresses according to slot gapping. For an approximate evaluation, one can use the value of gapping (or convergence) of the slote of the rail sample along the web.

• Supplemental Notes:
  • Performing organization was the All-Union Scientific Research Institute of Railroad Transport (V.N.I.I.). Abstract only is available in English, original untranslated as of December 1976.
• Corporate Authors:

  Ministerstvo Chernoi Metallurgi SSSR

  2-i Obydenski per 14
  Moscow G-34,   USSR 
• Authors:
  • Koniukhov, A D
  • Reikhart, V A
  • Kaportsev, V N
• Publication Date: 1973

Language

• Russian

Media Info

• Features: Figures; References;
• Pagination: p. 87-89
• Serial:
  • Zavodskaia Laboratoriia
  • Issue Number: 1
  • Publisher: Ministerstvo Chernoi Metallurgi SSSR

Subject/Index Terms

• TRT Terms: Railroad rails; Residual stress; Stresses; Structural analysis; Structural tests; Testing
• Old TRIS Terms: Rail stress; Rail tests
• Subject Areas: Bridges and other structures; Railroads;

Filing Info

• Accession Number: 00144455
• Record Type: Publication
• Source Agency: Federal Railroad Administration
• Files: TRIS, USDOT
• Created Date: Feb 16 1977 12:00AM