کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1066286 | 948685 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Internal noise reduction in railway carriages: A case study in China
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
علوم زیست محیطی (عمومی)
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چکیده انگلیسی
To enhance the travel environment of passengers, various damping materials are tested on new Chinese railway carriages; namely bitumen based, butyl rubber and water based materials. Two sets of experiments are carried out indicating that internal noise is spatially non-homogeneous in the whole carriage and dominated by low-frequency contents below 250 Hz. The faster the speeds, the greater the noise reduction in a carriage in terms of the A-weighted sound pressure level. At 150 km/h, the bitumen-based damping sheet along with water-based coating reduces internal noise by 5.7–8.6 dBA, and butyl rubber damping by 3.1–6.2 dBA with the former performing better in the major frequency range of 100–160 Hz.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transportation Research Part D: Transport and Environment - Volume 13, Issue 4, June 2008, Pages 213–220
Journal: Transportation Research Part D: Transport and Environment - Volume 13, Issue 4, June 2008, Pages 213–220
نویسندگان
Rongping Fan, Guang Meng, Jun Yang, Caichun He,