철도차량 제동 디스크 표면온도 모니터링

초록

In mechanical braking systems, there are hot spots on the surface of a braking disc due to thermal deformation witha high thermal gradient. Controlling such hot spots is important for extending the life of a braking disc. In this study,surface temperatures of railway brake discs were monitored using infrared (IR) thermal imaging technique. A highspeedinfrared camera with a maximum speed of 380 Hz was used to monitor surface temperature changes of thebraking disc. Braking tests were performed with a full-scale dynamometer. During the braking test, the surfacetemperature change of the braking disc were monitored using a high-speed infrared camera. Hot spots and thermaldamage observed on the surface of railway brake discs during braking tests were quantitatively analyzed usinginfrared thermographic images. Results revealed that monitoring disc surface temperature using IR thermographictechnique can be a new method for predicting surface temperature changes without installing a thermocouple insidethe disc.

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