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International Journal of Railway Technology
ISSN 2049-5358
IJRT, Volume 5, Issue 4, 2016
Lineside and On-board Monitoring Techniques for Infrastructure and Rolling Stock on High-Speed Lines
M. Entezami1, P. Weston1, E. Stewart1, G. Yeo1, M. Wang1, L. Saade1, C. Roberts1, R. Lewis2, M. Hayward3, S. Morley3, S. Bayram4 and T. Kono44

1Birmingham Centre for Rail Research and Education, University of Birmingham, Birmingham, United Kingdom
2TWI Ltd, Port Talbot, United Kingdom
3Network Rail High Speed Ltd, Kent, United Kingdom
4Hitachi Rail Europe, London, United Kingdom

Full Bibliographic Reference for this paper
M. Entezami, P. Weston, E. Stewart, G. Yeo, M. Wang, L. Saade, C. Roberts, R. Lewis, M. Hayward, S. Morley, S. Bayram, T. Kono, "Lineside and On-board Monitoring Techniques for Infrastructure and Rolling Stock on High-Speed Lines", International Journal of Railway Technology, 5(4), 49-77, 2016. doi:10.4203/ijrt.5.4.3
Keywords: Condition monitoring, railway, railhead, axle bearing, inertial measurement unit, energy harvesting.

Condition monitoring and condition-based maintenance of railway systems is increasingly important to the train operating companies and infrastructure managers. Degraded rolling stock or infrastructure elements can lead to inefficient operation, or even failures and their associated downtime and damage to the track and-or train. Condition monitoring equipment for retrofitting on high speed (HS) lines needs to be low cost and non-intrusive. Such equipment can lead to more efficient maintenance scheduling and can also be used for prognostic purposes. This paper describes the use of some recently developed on-board and lineside monitoring systems: \ i. Locating hunting within long tunnels using an on-board inertial measurement unit (IMU). ii. Identifying railhead defects with an on-board electromagnetic acoustic monitoring system. iii. An on-board energy harvesting axle bearing monitoring system. iv. A lineside acoustic monitoring system for wheel and axle bearing condition. These systems address a number of issues within the HS lines in the UK. This paper also discusses the adaptations required to develop such condition monitoring systems for use in a high-speed railway environment.

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