In the period from October 1, 1965, to October 1,1966, sixteen rolling load tests and six slow bend tests were conducted on butt-welded rail joints at the Association of American Railroads Research Center. The joints were made by the thermite (Thermex Metallurgical, Exomet and Orgotherm), submerged-arc and oxyacetylene pressure-butt-welding process. The rolling-load tests were made on a 12-in-stroke rolling-load machine. Welded specimens were tested for various reasons including: (1) to determine the quality of the submerged-arc-welded rail joints, (2) to evaluate 115-lb thermite welded rail joints made by the Exomet process, (3) to determine the seriousness of making butt welds from rails with hairline cracks of (pipe) in the web. (4) to investigate the possible detrimental effects of a collar that was not removed from an Orgotherm thermite welded rail joint. The slow bend tests were made with the rail resting on supports 4 ft. apart and loaded at 2 points, one on each side of and 6 in. from the weld. These tests were made with the rail base down, thereby subjecting the head to a compressive stress and the base to a tension stress. For satisfactory service performance a minimum of 1.5 in. of deflection and 140,000 psi modulus of rupture are being used as tentative criteria for oxyacetylene and electric-flash pressure butt welds. A summary of the slow bend test results is provided.

  • Corporate Authors:

    American Railway Engineering Association

    59 East Van Buren Street
    Chicago, IL  United States  60605
  • Publication Date: 1967-2

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 383-396
  • Serial:
    • Volume: 68
    • Publisher: American Railway Engineering Association

Subject/Index Terms

Filing Info

  • Accession Number: 00040426
  • Record Type: Publication
  • Report/Paper Numbers: Bulletin 605
  • Files: TRIS
  • Created Date: Jan 22 1976 12:00AM