FATIGUE CRACK PROPAGATION IN RAIL STEELS
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.
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Battelle Columbus Laboratories505 King Avenue
Columbus, OH United States 43201
Transportation Systems Center55 Broadway, Kendall Square
Cambridge, MA United States 02142
Washington, DC United States 20590
- Feddersen, G E
- Buchheit, R D
- Broek, D
- Publication Date: 1977-6
- Pagination: 108 p.
- TRT Terms: Alloy steel; Cracking; Defects; Fatigue (Mechanics); Inspection; Rail (Railroads); Rail steel; Railroad tracks; Statistical analysis; Steel; Testing
- Uncontrolled Terms: Crack propagation; Fractography
- Old TRIS Terms: Rail cracks; Rail steel metallurgy; Track inspection
- Subject Areas: Data and Information Technology; Railroads;
- 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