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EXPERIMENTAL CHARACTERIZATION OF WHEEL AND RAIL SURFACE ROUGHNESS

โœ Scribed by J.-F. CORDIER; P. FODIMAN

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
262 KB
Volume
231
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

For several years, studies carried out in Europe have shown the need to consider wheel and rail surface roughness as a major excitation parameter in railway rolling noise. Measuring the rail roughness may be critical in the assessment of the noise created by the wheel/track system. It can be measured by means of two complementary methods: z an indirect method based on the measurement of the axle box vibration or the noise level in the bogie region, z a direct scanning of the surface defects with a displacement sensor.

The direct scanning method allows a spectral representation of roughness levels that can be strongly in#uenced by the applied data processing. It must include the removal of sharp spikes resulting from pits or spikes, which are not representative of the actual excitation of the wheel/rail system.

๐Ÿ“œ SIMILAR VOLUMES

ROUGHNESS ON DUTCH RAILWAY WHEELS AND RA
ROUGHNESS ON DUTCH RAILWAY WHEELS AND RAILS
โœ P.C. Dings; M.G. Dittrich ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 352 KB

Surface roughness on 150 railway wheels and on the rails of 30 sites in the Netherlands have been measured. Block braked wheels were found to show higher roughnesses than the rail at any site. The smoothest rail is 8 dB smoother than the smoothest wheel. It was concluded that in reducing railway rol