FATIGUE CRACK GROWTH PROPERTIES OF RAIL STEELS

Fatigue crack propagation properties of rail steels were determined experimentally. The investigation covered 66 rail steels. The effects of the following parameters were studied: stress ratio (ratio of minimum to maximum stress in a cycle), frequency, temperature and orientation. The results were presented on the basis of the stress intensity factor. The threshold value of the stress intensity was determined. An equation correlating the crack growth rate and the stress intensity factor was established. A limited number of mixed mode crack growth tests were conducted. Also the behavior of surface flaws was studied. The results serve as a data base for a failure model presented in DOT-TSC-FRA-80-30/FRA/ORD-81/31.

• Record URL:
  https://railroads.dot.gov/elibrary/fatigue-crack-growth-properties-rail-steels
• 
• Corporate Authors:

  Battelle Columbus Laboratories

  Columbus, OH  United States 

  Federal Railroad Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142
• Authors:
  • Broek, D
  • Rice, R C
• Publication Date: 1981-10

Media Info

• Media Type: Digital/other
• Pagination: 160 p.

Subject/Index Terms

• TRT Terms: Cracking; Fatigue (Mechanics); Railroad tracks; Repeated loads; Statistical analysis; Steel
• Uncontrolled Terms: Crack propagation; Fractography
• Subject Areas: Data and Information Technology; Railroads;

Filing Info

• Accession Number: 00346747
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FRA/ORD-81/30
• Contract Numbers: DOT-TSC-1076-1
• Files: NTIS, USDOT
• Created Date: Jan 29 2003 12:00AM