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Wave propagation in railway tracks at high frequencies

Wave propagation in railway tracks at high frequencies
Wave propagation in railway tracks at high frequencies
In terms of the long range rail inspection, rail vibration which can propagate over long distances along rails may be a useful tool to detect rail defects. In order to understand long range wave propagation in railway tracks, it is required to identify how far vibration can travel along a rail. To answer this question, the attenuation characteristics of all propagating waves should be determined. In this work decay rates of propagating waves are investigated for frequencies up to 80 kHz. The Wavenumber Finite Element (WFE) method is used to represent a track which has a rail on a continuous foundation. Different damping loss factors are introduced in this model for the damping in the rail and in the foundation. By this simulation, the efficient wave types and their decay rates are predicted. These are presented in terms of what is measurable on various regions of the rail cross-section. In order to validate the simulation results, an experiment was performed on an operational railway track. The measured results are presented for comparison with the simulated ones and good agreement between them is found.
978-3-540-74892-2
440-446
Springer
Ryue, Jungsoo
06336056-2b9b-4620-9c4a-f2cbd602ab3e
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Thompson, D.R.
1d9c2d44-fc82-4f30-a7c8-0563650852b9
Schulte-Werning, Burkhard
Thompson, David J.
Gautier, Pierre-Etienne
Hanson, Carl
Hemsworth, Brian
Nelson, James
Maeda, Tatsuo
de Vos, Paul
Ryue, Jungsoo
06336056-2b9b-4620-9c4a-f2cbd602ab3e
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
White, Paul R.
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Thompson, D.R.
1d9c2d44-fc82-4f30-a7c8-0563650852b9
Schulte-Werning, Burkhard
Thompson, David J.
Gautier, Pierre-Etienne
Hanson, Carl
Hemsworth, Brian
Nelson, James
Maeda, Tatsuo
de Vos, Paul

Ryue, Jungsoo, Thompson, David J., White, Paul R. and Thompson, D.R. (2008) Wave propagation in railway tracks at high frequencies. Schulte-Werning, Burkhard, Thompson, David J., Gautier, Pierre-Etienne, Hanson, Carl, Hemsworth, Brian, Nelson, James, Maeda, Tatsuo and de Vos, Paul (eds.) In Noise and Vibration Mitigation for Rail Transportation Systems: Proceedings of the 9th International Workshop on Railway Noise, Munich Germany 4-8 September 2007. vol. 99, Springer. pp. 440-446 . (doi:10.1007/978-3-540-74893-9_62).

Record type: Conference or Workshop Item (Paper)

Abstract

In terms of the long range rail inspection, rail vibration which can propagate over long distances along rails may be a useful tool to detect rail defects. In order to understand long range wave propagation in railway tracks, it is required to identify how far vibration can travel along a rail. To answer this question, the attenuation characteristics of all propagating waves should be determined. In this work decay rates of propagating waves are investigated for frequencies up to 80 kHz. The Wavenumber Finite Element (WFE) method is used to represent a track which has a rail on a continuous foundation. Different damping loss factors are introduced in this model for the damping in the rail and in the foundation. By this simulation, the efficient wave types and their decay rates are predicted. These are presented in terms of what is measurable on various regions of the rail cross-section. In order to validate the simulation results, an experiment was performed on an operational railway track. The measured results are presented for comparison with the simulated ones and good agreement between them is found.

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More information

Published date: 8 April 2008
Organisations: Dynamics Group, Signal Processing & Control Group

Identifiers

Local EPrints ID: 148527
URI: http://eprints.soton.ac.uk/id/eprint/148527
ISBN: 978-3-540-74892-2
PURE UUID: 133cd38b-0060-4550-8936-7849490db073
ORCID for David J. Thompson: ORCID iD orcid.org/0000-0002-7964-5906
ORCID for Paul R. White: ORCID iD orcid.org/0000-0002-4787-8713

Catalogue record

Date deposited: 28 Apr 2010 12:20
Last modified: 14 Mar 2024 02:40

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Contributors

Author: Jungsoo Ryue
Author: Paul R. White ORCID iD
Author: D.R. Thompson
Editor: Burkhard Schulte-Werning
Editor: David J. Thompson
Editor: Pierre-Etienne Gautier
Editor: Carl Hanson
Editor: Brian Hemsworth
Editor: James Nelson
Editor: Tatsuo Maeda
Editor: Paul de Vos

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