Thameslink To Go Noise-Free, Courtesy SilentTrack

Scheduled for completion in 2018, Thameslink will offer more recurrent and longer newly-build trains to three central London stations. This indicates elevated traffic through Blackfriars station plus the related commotion, states David Benton. Altogether, 0.8 miles (1.3km) of SilentTrack shall be needed to get the stations within noise regulations founded on the technology committing about 50 per cent decrease in noise. SilentTrack was created buy the Southampton researchers in collaboration with Tata Steel engineers, and as of now has been installed in over 90 miles of localized noisy areas throughout the world.
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The system has two or three resonant masses of Scunthopre-made steel fixed in elastomer having a high damping factor. The dampers are then connected to bot sides of the rail using spring clips. A lot of emphasis was given to the acoustic behavior between the wheel-rail interface, and now it is possible to tune the dampers as per the given stretch of track. Then the decay rate, which affects the acoustic behavior, is measured, and the frequencies where decay rates are the worst are the frequencies yielding noise.