The paper describes the development of a method of predicting brake block wear and gives the results of a first attempt to establish its reliability by comparing the predicted wear with that which actually occurs in an existing service. A new approach to laboratory-scale wear testing has enabled the wear per unit energy dissipated of a given composition material to be determined for any relevant combination of the three basic parameters -- tire surface temperature, rubbing speed and applied force. The values of energy dissipation, rubbing speed and brake force at any instant during a given service are calculated from a knowledge of the relevant vehicle parameters and from direct observation or calculation of the braking duties undertaken. The surface temperatures are calculated from these data using one-dimensional heat flow equations which are improvements on those developed previously. A computer program has been developed which calculates these temperatures and uses laboratory wear data to work out the predicted wear for the service being studied.

  • Supplemental Notes:
    • International Conference on Railway Braking, University of York, England, September 26-27, 1979.
  • Corporate Authors:

    Institution of Mechanical Engineers

    1 Birdcage Walk
    London SW1H 9JJ,   England 
  • Authors:
    • McGuire, M
  • Conference:
  • Publication Date: 1979

Media Info

  • Features: References;
  • Pagination: p. 143-151

Subject/Index Terms

Filing Info

  • Accession Number: 00324898
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: 1979-11 Conf Paper
  • Files: TRIS
  • Created Date: Feb 6 1981 12:00AM