EFFECT OF COLD WORKING OF BOLT HOLES ON RAIL LIFE

Fatigue tests of bolted joints in 112 pound rails were conducted to evaluate the effectiveness of cold working bolt holes to retard cracking. No cracks were produced in rails either with or without cold-worked holes. In the tests, the joints were subjected to bending stresses only. It is recommended that tests be made on equipment which will produce tensile as well as bending stresses to more nearly simulate conditions in track.

  • Supplemental Notes:
    • AAR Project No. H-119. Sponsored by Burlington Northern Transportation Company, St. Paul, Minnesota.
  • Corporate Authors:

    Association of American Railroads Research Center

    3140 South Federal Street
    Chicago, IL  United States  60616
  • Authors:
    • Wisnowski, M J
    • Linn, T B
  • Publication Date: 1978-6

Media Info

  • Features: Figures; References;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00188115
  • Record Type: Publication
  • Source Agency: Association of American Railroads Technical Center
  • Report/Paper Numbers: AAR Rpt R-311 Res Rpt.
  • Files: TRIS
  • Created Date: Feb 27 1979 12:00AM