철도차량용 제동디스크의 온도 변화 측정 및 물성치 변화에 관한 연구(I)

초록

This study investigates the change of the temperature and mechanical properties of the braking disk for the railway vehicle. The average temperature is measured about 100℃ and the maximum temperature is measured over 200℃ by non-contact sensor from Seoul to Chun-an. As a result of measuring, we determine the temperature of test(tensile and J-integral) at 20℃, 100℃, 200℃ and 300℃. In the test, the material values are decreased by the increasing of the temperature. But ratio of decreasing is the largest at 200℃, the tensile test value is decreased about 10% and the J-integral test value is decreased 30%. The mechanical properties of this material are mostly changed at 200℃.

키워드