Detection Algorithm of the Abnormal Heat for the Lower Parts of Railway Vehicle

초록

The lower parts of the railway vehicle is composed of driving gears, bearings, wheels, wheelsets, motors and so on. And there are creating mechanical troubles during the running by different reasons. Most of troubles of railway vehicles have recently been reported in core parts (motor frames, tripods, axle bearings, wheels, etc.) and overhauls are practiced with 3~4 year cycle for preventing the accident and for safety in running. But an appropriate time and accuracy to check the core parts and increase of the maintenance cost are still occurring. Infrared thermography is a powerful nondestructive diagnosis technology for the characterization of thermal phenomenon in the railway vehicle components. The high-speed infrared camera provides the measurement of temperature change during running. This paper deals with the detecting algorithm of the abnormal heat of the lower parts of railway vehicle as part of nondestructive diagnosis technology for core parts (driving motors, driving gears) using the high-speed infrared camera.