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디스크 브레이크의 제동마찰 및 마멸특성에 관한 실험적 연구
김청균(Chung Kyun Kim),이병관(Boung Kwan Lee),김한구(Han Goo Kim) 한국트라이볼로지학회 2006 한국윤활학회지(윤활학회지) Vol.22 No.3
This paper presents the braking friction and wears on the rubbing surfaces of a friction pad-disk brake. In this study, four friction disk specimens are sampled from unused and used disks in which are taken from the disk brake system when the friction induced vibration and noise problems have been occurred during a braking period at a running period of 10,000 ㎞, 20,000 ㎞, and 30,000 ㎞ in random. The experimental results indicate that the tribological characteristics of an unused disk brake shows equal and stable as a friction coefficient and temperature distributions during a braking friction/wear test period including a total friction mode from the start to running periods. But the used disk brake shows unstable and uneven friction modes between an outside and inside rubbing surfaces of a disk brake in terms of a friction coefficient and wears. This may lead to a friction induced friction vibration and noise problems of a used disk brake.