Evaluating degradation at railway crossings using axle box acceleration measurements

Zilong Wei, Alfredo Núñez, Zili Li*, Rolf Dollevoet

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

33 Citations (Scopus)
67 Downloads (Pure)

Abstract

In this paper, we investigate the capability of an axle box acceleration (ABA) system to evaluate the degradation at railway crossings. For this purpose, information from multiple sensors, namely, ABA signals, 3D rail profiles, Global Positioning System (GPS) and tachometer recordings, was collected from both nominal and degraded crossings. By proper correlation of the gathered data, an algorithm was proposed to distinguish the characteristic ABA related to the degradation and then to evaluate the health condition of crossings. The algorithm was then demonstrated on a crossing with an unknown degradation status, and its capability was verified via a 3D profile measurement. The results indicate that the ABA system is effective at monitoring two types of degradations. The first type is uneven deformation between the wing rail and crossing nose, corresponding to characteristic ABA frequencies of 230–350 and 460–650 Hz. The second type is local irregularity in the longitudinal slope of the crossing nose, corresponding to characteristic ABA frequencies of 460–650 Hz. The types and severity of the degradation can be evaluated by the spatial distribution and energy concentration of the characteristic frequencies of the ABA signals.

Original languageEnglish
Article number2236
Pages (from-to)1-16
Number of pages16
JournalSensors
Volume17
Issue number10
DOIs
Publication statusPublished - 29 Sep 2017

Keywords

  • 3D profile measurement
  • Axle box acceleration measurement
  • Crossing degradation
  • Railway infrastructure monitoring
  • OA-Fund TU Delft

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