NEW EXPERIMENTAL METHODS FOR AN IMPROVED CHARACTERISATION OF THE NOISE EMISSION LEVELS OF RAILWAY SYSTEMS
✍ Scribed by C. DINE; P. FODIMAN
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 184 KB
- Volume
- 231
- Category
- Article
- ISSN
- 0022-460X
No coin nor oath required. For personal study only.
✦ Synopsis
The requirements to harmonize the limits for noise emission for the railway systems within Europe demands improvements of the existing joint measurement standards (ISO 3095 and CEN/TC 256). Recent research on rolling noise mechanisms or speci"c measurement techniques may help to meet the EC noise emission requirements. Some results from these studies have been taken into account in the CEN project standard document on noise emission of railbound vehicles. A review of the standardization approach is presented initially. Some measurement methods developed by SNCF, mainly of a diagnostic nature are then reviewed, including: * identi"cation of track and vehicle noise contributions; * statistical approach to characterize the railway system noise emission values in operational conditions of maintenance;
* quanti"cation techniques with a vertical microphone array. These methods, which may contribute to research work in that "eld, are reported, and results are presented.