Monitoring of non-ballasted railway tracks in tunnel: Development of a robot for the automatic detection of damaged concrete blocks

The non-ballasted technology has yielded numerous new railway tracks, especially in tunnels. The "low vibration track" (LVT) is a system developed in 1980s, and it today covers more than 1100km of track around the world, including the Channel tunnel. This system contains a concrete block based on a micro-cellular pad...