THIRTEENTH PROGRESS REPORT OF THE ROLLING-LOAD TESTS OF JOINT BARS

Twelve tests of new 132 RE headfree bars with ground easements averaged 403,610 cycles in the rolling-load tests. Fourteen of the bars failed. Twelve tests of used 132 RE headfree bars, reheat treated by oil quenching at 1500 to 1550 deg F, after grinding easements, averaged 761,870 cycles. Twelve tests of used 132 RE headfree bars, reheat treated by oil quenching at 1500 to 1550 deg F and tempering at 800 deg F after grinding easements, averaged 484,980 cycles. The ground easements from 1/32 to 7/64 in. in depth were effective in eliminating or reducing gouging by the rail ends. Tests on four 112 K2 headfree bars which failed in service indicated yield points below AREA specifications and Brinell hardnesses below 200 on the tensile specimens.

• Corporate Authors:

  American Railway Engineering Association

  59 East Van Buren Street
  Chicago, IL  United States  60605
• Authors:
  • Jensen, R S
• Publication Date: 1955-2

Media Info

• Features: Figures; Photos; Tables;
• Pagination: p. 938-951
• Serial:
  • AREA BULLETIN
  • Volume: 56
  • Issue Number: 521
  • Publisher: American Railway Engineering Association

Subject/Index Terms

• TRT Terms: Cracking; Dynamic loads; Fastenings; Hardness; Railroad rails; Stresses; Technology; Tension; Tie bars
• Uncontrolled Terms: Tensile stress
• Geographic Terms: United States
• Subject Areas: Materials; Railroads;

Filing Info

• Accession Number: 00040514
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 8 1994 12:00AM