WHEEL RAIL ADHESION CONTAMINATED RAIL AND METHODS FOR IMPROVEMENT (WORKING PAPER ON)

A basic study of wheel-rail adhesion on contaminated rail has been conducted. The mechanisms of production and loss of adhesion due to various factors and especially due to contaminants, have been discussed. A study of physical and chemical properties of rail contaminants based on earlier British Rail work and current A.A.R. work is included. The rail surface is coated with a thin film of surface active oils/greases and solid debris. Its composition is discussed. Five series of adhesion creep experiments were conducted on a quarter scale facility using simulated organic and inorganic contaminants. Magnitude of creep was found to have a dominating influence on adhesion levels. Eight different wheel rail scenarios and methods of improving adhesion enhancement and their comparison with the method of sanding are discussed.

• Supplemental Notes:
  • See also PB96-114525. Sponsored by Transportation Research Board, Washington, DC, Federal Transit Administration, Washington, DC, and Association of American Railroads, Pueblo, CO, Transportation Test Center.
• Corporate Authors:

  Tranergy Corporation

  774 Foster Avenue
  Bensenville, IL  United States  60106
• Authors:
  • Kumar, S
  • Dyavanapalli
• Publication Date: 1995-4

Language

• English

Media Info

• Pagination: 41 p.

Subject/Index Terms

• TRT Terms: Adhesion; Coefficients; Contaminants; Defects; Railroad rails; Railroad wheels; Wheels
• Old TRIS Terms: Adhesion coefficient; Adhesion creep; Adhesion enhancement; Rail contamination
• Subject Areas: Public Transportation; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00721027
• Record Type: Publication
• Report/Paper Numbers: TC-NAS-95-3
• Files: TRIS
• Created Date: May 29 1996 12:00AM