NOISE CONTROL IN RAILWAY VEHICLES

被引：0

作者：

Stepan, D. ^{[1
]}

Ionel, I. ^{[1
]}

Stefanescu, W. ^{[1
]}

Dungan, L. I. ^{[1
]}

机构：

[1] Politehnica Univ Timisoara, Fac Mech Engn, Timisoara 300222, Romania

来源：

JOURNAL OF ENVIRONMENTAL PROTECTION AND ECOLOGY | 2012年 / 13卷 / 02期

关键词：

noise; attenuation incidence; frequency; phonoabsorbant structures;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the paper are presented some aspects regarding the air-borne noise pollution of the railway vehicles. Noise reduction is essential for converting acoustical energy into another, less disturbing from energy-heat. Noise control is comprised of 3 components: reduction of noise generation at the source, reduction of noise from point to point, along the transmission path and reduction of noise at the receiver through acoustical treatment. All sound transmission is both air-borne and structures-borne since the sound travel along the structure and causes the structure to vibrate. The incidence of sound energy causes the partition to vibrate and generating sound on the other side. Sound reduction index (transmission loss) is used for evaluating the sound-isolation quality of the acoustic barrier.

引用

页码：561 / 570

页数：10