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New Trends in Railway Noise Engineering

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Acoustics and Vibrations".

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 2942

Special Issue Editor


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Guest Editor
Department at the Institute for Land and Sea Transport, Technical University of Berlin, Berlin, Germany
Interests: vehicle dynamics; railway; acoustics and acoustic engineering; acoustic analysis; noise analysis; transportation; condition monitoring; transport engineering

Special Issue Information

Dear Colleagues,

Railways are environmentally friendly with few efforts, except for noise. However, even low-noise systems are achivable. There are two principle manners to get there. Secondary measures, such as noise barriers or even noise tunnels, are selected very often, but have only limited benefits, are very costly, and have significant disadvantages. Noise inside the vehicle increases, traction energy consumption increases, and safety is reduced. Primary measures, with noise reduction at the source, are superior. Tracknoise and vehicle noise can be reduced significantly compared to todays situation. Costs are also kept within tight limits if good measures are foreseen.

Prof. Dr. Markus Hecht
Guest Editor

Manuscript Submission Information

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Keywords

  • railway noise
  • noise reduction at source
  • quiet tracks
  • low-noise bogies
  • low-noise EMUs

Published Papers (1 paper)

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Research

17 pages, 7484 KiB  
Article
Acoustic Roughness Measurement of Railway Tracks: Implementation of a Chord-Based Optical Measurement System on a Train
by Florian Mauz, Remo Wigger, Tobias Wahl, Michal Kuffa and Konrad Wegener
Appl. Sci. 2022, 12(23), 11988; https://doi.org/10.3390/app122311988 - 23 Nov 2022
Cited by 4 | Viewed by 2619
Abstract
A large part of the noise emissions from rail traffic originates from rolling noise. This is significantly determined by the surface roughness of the wheel and the rail. To quantitatively assess the noise generation from the wheel–rail contact, it is necessary to measure [...] Read more.
A large part of the noise emissions from rail traffic originates from rolling noise. This is significantly determined by the surface roughness of the wheel and the rail. To quantitatively assess the noise generation from the wheel–rail contact, it is necessary to measure the surface roughness of the rail network. Direct measurements via trolley devices are usually associated with the need for a free track and limitation in velocity. Indirect measurements of rail roughness, such as measuring axle-box accelerations, enable operation during regular passage but only estimate the acoustic roughness. In this study, the potential of an optical and consequently contact-free measurement method using laser triangulation sensors to measure rail roughness from the train is investigated. The approach can combine the advantage of operation during regular passage with the characteristics of a direct measurement, enabling large-scale monitoring of the rail network. A measurement run with a train was carried out on a meter-gauge track at speeds up to 80 km h1 The results of the optical measurement approach were compared with a tactile reference measurement on the track. The results show good agreement of the new measurement setup for dry rail surface conditions at 50 km h1, with a mean deviation of 1.48 dB. Full article
(This article belongs to the Special Issue New Trends in Railway Noise Engineering)
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