Alumino-thermic welding of hush rails:- boutet welds in hush rails (IM-MF-061)

In order to reduce wheel/rail noise and therefore improve the envi¬ronment for lineside residents, British Rail Research, in conjunction with the British Steel Corporation, has developed "Hush Rail". By reducing the cross-section of the rail (i.e. shorter but slightly thicker web), radiation efficiency is reduced at low frequencies. High...