Technical Reports

Cold Weather Transit Technology Program - Investigation of the High Incidence of Rail Pull Aparts on Continuous Welded Rail

  • 01
  • May
  • 1983
AUTHOR: Y. J. Elizondo, R. E. Duvall
OFFICE: RPD
REPORT NUMBER: UMTA-IN-06-0009-83-3
SUBJECT: Rail and Infrastructure Integrity
KEYWORDS: Thermite Welds, Ultrasonic Inspections, Metallurgical Analysis
ABSTRACT: This report presents the results of an investigation of the high incidence of rail pull aparts occurring on the Massachusetts Bay Transit Authority's rapid transit system during the winter of 1981-82. This investigation was accomplished as part of the Cold Weather Transit Technology (CWTT) Program under a Federal grant from the Urban Mass Transportation Administration to the University of Notre Dame. The CWTT Program is a project to improve transit operations in severe ice, snow and cold environments. The rail pull apart investigation was made to determine the probable cause for the increased failure rate and to recommend corrective actions to prevent or reduce recurrence of this problem. The investigation involved site, literature and industry surveys, laboratory analyses of the failures and a test and analyses program to define the process and/or operational methodology to reduce the failure rate.
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