Die Paarung Rad/Verbundstoffbremssohle: Reduzierung des Rollgeräusches

Reducing the noise emissions generated by railway traffic has long been one of the priorit objectives of SNCF and since the 1990s also of the Community of European Railways. The aim is to reduce rolling noise predominantly through measures taken at the source of the noise, in other words at the wheel/rail contact point. Whilst new passenger vehicles today are fitted almost without exception with low-noise disc brakes, reducing noise on older treadbraked coaches and on freight wagons especially is achieved by replacing the existing cast-iron brake blocks with composite and sintered materials. This paper uses the acoustic characteristics of some of SNCF's most important rolling stock and the results obtained from UIC development work to illustrate specific technical solutions with their potential performance and depict the state of the art. Cost-effective solutions are emerging that are set to cut future railway noise emissions by half, simply through measures targeting rolling noise.