Quiet Track - Monitoring of track roughness and track decay rate

Invited paper

Martin Höjer

Tyréns AB

Wednesday 3 june, 2015, 09:40 - 10:00

0.1 London (90)

As a part of the EU-financed project ”Quiet track”, a method for monitoring parameters influencing the noise from the rail/wheel contact in the Stockholm Metro is developed. By continuous monitoring of the sound level beneath a regular operational train of model C20, the aim is to facilitate determination of rail roughness and track decay rate (TDR). The objective is that the monitoring will provide more efficient track maintenance, possibility to optimize track maintenance to reduce rolling noise, and increase the knowledge of the rail status in terms of noise generation, which may facilitate increased accuracy in measured and calculated noise levels. The paper, will give a closer description of the advantages with the system, the targets of the project, basic principles for the measurement system and some preliminary measurement results.

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