In order to establish safe inspection periods of railroad rails, information on fatigue crack growth rates is required. These data should come from a sufficiently large sample of rails presently in service. The reported research consisted of the generation and analysis of fatigue crack growth data of 66 rail samples taken from existing track all over the United States. Additional information concerns mechanical properties, chemical composition, microstructure, and fractographic features. A statistical analysis was performed to evaluate possible correlations with fatigue crack growth properties and microstructural parameters. Weak correlations were found with carbon, manganese and oxygen content, and with the fraction of pearlite. A subsequent phase of this research program is discussed.

  • Record URL:
  • Corporate Authors:

    Battelle Columbus Laboratories

    505 King Avenue
    Columbus, OH  United States  43201

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142

    Federal Railroad Administration

    Office of Research and Development, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Feddersen, G E
    • Buchheit, R D
    • Broek, D
  • Publication Date: 1977-6

Media Info

  • Pagination: 108 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00167280
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT-TSC-FRA-77-3 Intrm Rpt.
  • Contract Numbers: DOT-TSC-1076
  • Files: NTIS, TRIS, USDOT
  • Created Date: Nov 23 1977 12:00AM