Component Analysis of Extraneous Stuffs Attached on Measurement Target of Track Irregularity

Abstract

The rail track is one of the most important structures for maintenance among railway structures. The rail track is subjected to repeated loads by the wheels directly, causing track deviation. Track irregularity causes unsafety and uncomfortable running of train. There is a method of measuring orbital deviation. By installing a recursive target for image measurement on the rail of the train, the coordinates of the center of gravity are measured with a digital camera. Track distortion caused by repeated train running is measured. However, since the train repeatedly travels, deposits are attached due to external environmental factors, and the target becomes black. In this study, the attached matter was analyzed and the kind of attached matter was confirmed. By analyzing the attached matter, various materials are found, and it is possible to infer a blackened state. Knowing the actual condition of the adhering matter enables countermeasures and prevention, leading to a reduction in maintenance work.