Development of Predictive Models for Spall Growth in Railroad Bearing Rolling Elements

The mechanics of spall growth in a railroad rolling element bearing will be studied using a number of bearings with spalls of various sizes. Bearings undergoing simulated service life testing will be monitored and the developing spalls will be periodically measured. From this data, a model for spall growth as a function of bearing loading, speed, and mileage will be developed. The thermal signature and vibration response of bearings with the spalls will also be obtained during testing. This signal information will permit the eventual coupling of a model of spall growth to spall detection technology to permit economical scheduling of bearing replacement after spall detection without a reduction of safety margin. Given advancements in monitoring technologies which are likely to emerge in the near future, operators will be able to identify the initiation of a spall on a bearing in service. However, a bearing with a spall is not necessarily in danger of imminent failure. To minimize disruption to operations while providing the same level of accident prevention that early detection provides, it will be necessary to understand the growth process and the associated signals generated by various size spalls to permit timely and economical replacement of failing components.

Language

  • English

Project

  • Status: Active
  • Funding: $79,180
  • Contract Numbers:

    DTRT13-G-UTC59

  • Sponsor Organizations:

    University of Texas Rio Grande Valley

    1201 W. University Dr
    Edinburg, Texas  United States  78539

    Research and Innovative Technology Administration

    University Transportation Centers Program
    1200 New Jersey Avenue
    Washington, DC  United States  20590
  • Managing Organizations:

    University of Texas Rio Grande Valley

    1201 W. University Dr
    Edinburg, Texas  United States  78539
  • Performing Organizations:

    University of Texas Rio Grande Valley

    1201 W. University Dr
    Edinburg, Texas  United States  78539
  • Principal Investigators:

    Jones, Robert

    Tarawneh, Constantine

    Fuentes, Arturo

  • Start Date: 20150101
  • Expected Completion Date: 20170531
  • Actual Completion Date: 0
  • USDOT Program: University Transportation Centers
  • USDOT Program: University Transportation Centers Program

Subject/Index Terms

Filing Info

  • Accession Number: 01601741
  • Record Type: Research project
  • Source Agency: University Transportation Center for Railway Safety
  • Contract Numbers: DTRT13-G-UTC59
  • Files: UTC, RiP
  • Created Date: Jun 8 2016 5:59PM