Brake noise measurements on mixed freight trains with composite brake blocks
conference paper
Brake noise is known to be a major contributor to the total sound emission of railway yards and areas near stations. It has been established that composite brake blocks reduce rolling noise, but it is not known if this is also the case for braking noise. Therefore, in order to investigate this, noise measurements were conducted on mixed freight trains according to the applicable protocols. Measurements were conducted on trains slowing down from a speed of 30 km/h to standstill and on trains passing-by with brakes applied. Some composite brake blocks showed a considerable reduction of both braking pass-by levels and peak noise levels. Results are presented. If squeal noise is absent, braking noise of most considered brake blocks show a speed dependency similar to that for rolling noise.
TNO Identifier
470811
ISSN
22265147
Source title
7th European Conference on Noise Control, EURONOISE 2008 and Acoustics '08, 29 June - 4 July 2008, Paris, France
Pages
2655-2660
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