Correlation of Continuous Vehicle Based and Wayside Inspection Data to Develop Non-Traditional Maintenance Intervention Strategies

The vehicle/track interface continues to be of great concern in all rail operations to include high speed and conventional passenger, freight and transit operations. Much research has been performed in this area and in the associated area of the wheel/rail interface, and have resulted in the development of sophisticated inspection technologies aimed at evaluating various track and train component performance and conditions. Until now, the data from these varied inspection technologies have been evaluated at a basic data analysis level, e.g. threshold analysis based. This activity extends improved data Analytic techniques to the analysis of data collect on a complete New York City Transit Authority (NYCT) transit line. The focus of this study was analysis of wayside measurement data with a specific emphasis Wheel Profile Data using wheel profile data for every passing wheel on every vehicle in the fleet that operates on the study NYCT line. This data was supplemented by the following additional data: (1) Applied Rail Force Data: measured lateral and vertical forces on the rail from every passing axle and (2) Angle of Attack Data: measured angle of attack of the bogie for every passing vehicle. This research study used this wheel wear data, as provided by the NYCT, to analyze wheel wear trends and forecast wheel maintenance (truing based on flange thickness) and wheel life (replacement based on rim thickness). Using automatic wheel-scanning technology, NYCT was able to collect wheel profile measurements for nearly 4,000 wheels in their fleet over a six-month period, measured weekly. The resulting wheel measurement data was analyzed using advanced stochastic techniques to determine relationships for the changes in flange thickness over time for each wheel in the fleet. The expected research results will be a set of wheel wear models that can be used to forecast the time it would take for a wheel to reach the flange thickness maintenance threshold as defined by NYCT standards. This is to include both wheel truing maintenance and wheel replacement.

    Language

    • English

    Project

    • Status: Completed
    • Funding: $100000
    • Contract Numbers:

      69A3551747132

    • Sponsor Organizations:

      Office of the Assistant Secretary for Research and Technology

      University Transportation Centers Program
      Department of Transportation
      Washington, DC  United States  20590
    • Managing Organizations:

      University Transportation Center on Improving Rail Transportation Infrastructure Sustainability and Durability

      University of Nevada, Las Vegas
      Las Vegas, NV  United States  89154
    • Performing Organizations:

      University of Delaware, Newark

      College of Engineering
      Newark, DE  United States  19711
    • Principal Investigators:

      Zarembski, Allan

    • Start Date: 20170901
    • Expected Completion Date: 20210430
    • Actual Completion Date: 0
    • USDOT Program: University Transportation Centers

    Subject/Index Terms

    Filing Info

    • Accession Number: 01702434
    • Record Type: Research project
    • Source Agency: University Transportation Center on Improving Rail Transportation Infrastructure Sustainability and Durability
    • Contract Numbers: 69A3551747132
    • Files: UTC, RiP
    • Created Date: Apr 22 2019 11:24PM