Trackbed behavior analysis based on distributed acoustic sensor

Ali Masoudi; David Milne; John Harkness; Geoff Watson; Louis Le Pen; Gilberto Brambilla; William Powrie

doi:10.1117/12.2679768

23 May 2023 Trackbed behavior analysis based on distributed acoustic sensor

Ali Masoudi, David Milne, John Harkness, Geoff Watson, Louis Le Pen, Gilberto Brambilla, William Powrie

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 1264329 (2023) https://doi.org/10.1117/12.2679768
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

In this study, an optical fiber, buried in the trackbed during track renewal, is used to measure the vertical support and pressure distribution of the track. The pressure distribution was obtained using a distributed acoustic sensor (DAS) system by measuring the pressure-induced strain changes on the sensing fiber. The experimental results obtained by the DAS system show a good agreement with the numerical model of the trackbed.

Citation Download Citation

Ali Masoudi, David Milne, John Harkness, Geoff Watson, Louis Le Pen, Gilberto Brambilla, and William Powrie "Trackbed behavior analysis based on distributed acoustic sensor", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 1264329 (23 May 2023); https://doi.org/10.1117/12.2679768

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