다중변위센서를 사용한 레일 표면 조도의 측정 정밀도 향상

초록

A large roughness growth on the rail surface becomes a main cause of rolling noise when a train passes a railway track. Therefore, a proper track maintenance activity and intervention has to be performed with a reliable knowledge of rail surface roughness status. Various techniques can be used to measure the rail roughness. This paper, however, proposes a measuring method of the rail surface roughness with an automated surface exploring device. It is also presented to increse the accuracy of the surface roughness data with multiple displacement sensors on the mesuring device.