FAILURE ANALYSIS OF RAILS FROM FACILITY FOR ACCELERATED SERVICE TESTING

Failure analyses have been made of three rails from the Facility for Accelerated Service Testing (FAST). A standard 115 lb (57 kg/m) rail showed severe wear from heavy wheel loads of 100 ton (90.7 Mg) cars. This rail also had a detailed fracture. A high-strength chromium-molybdenum steel rail showed poor fracture toughness. Test results indicate it might be desirable to lower the alloy content of this steel to get a better combination of strength and toughness. The third rail failed by fatigue initiated at a badly ground weld reinforcement. This points up the importance of grinding welded rail very carefully to avoid stress-raising notches.

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 413-446
  • Serial:
    • Volume: 79

Subject/Index Terms

Filing Info

  • Accession Number: 00183297
  • Record Type: Publication
  • Source Agency: American Railway Engineering Association
  • Report/Paper Numbers: Bulletin 668 Proceeding
  • Files: TRIS
  • Created Date: Nov 14 1978 12:00AM