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.
- AAR Project No. H-119. Sponsored by Burlington Northern Transportation Company, St. Paul, Minnesota.
Chicago, IL United States 60616
- Wisnowski, M J
- Linn, T B
- Publication Date: 1978-6
- Features: Figures; References;
- Pagination: 12 p.
- TRT Terms: Bolts; Cold working; Cracking; Fatigue tests; Holes; Rail (Railroads); Rail joints; Stresses; Test facilities
- Uncontrolled Terms: Crack propagation
- Old TRIS Terms: Bolt holes; Rail ends; Rail stress
- Subject Areas: Railroads; Terminals and Facilities;
- 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