Advancements in squats management: a Queensland rail experience

Queensland Rail has been investigating the means to manage rail squats rationally for over five years. The experience and the data collected has led to a series of improvements, with promising results based on initial results. The present work builds on previous research and discusses the effectiveness of the implemented initiatives. New findings still pending more investigation are also introduced, such as: (a) the optimization of grinding parameters for light axle load networks. (b) The introduction of friction induced martensite (FIM) helps to explain the initiation of squats in areas where this type of defects is not expected. (c) New non-destructive testing methods were introduced. Most noticeably the use of vehicle mounted eddy current to detect FIM. (d) The initial results obtained by pre-profiling vertical rail in turnouts to improve steering is discussed. Growth rate of thermally initiated squats in bi-directional track is also presented and discussed. Gauge variation and changes in steering characteristics inside turnouts also helps to better understand squats. The present works close with a discussion of the results for effective squats management and future directions to improve track reliability.

Media Info

  • Pagination: 11p. ; PDF
  • Monograph Title: AusRAIL PLUS 2019, Delivering growth; creating opportunity; embracing technology, 3-5 December 2019, Sydney, NSW, Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01748331
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • Files: ATRI
  • Created Date: Aug 20 2020 2:10PM