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Hot Spot의 시각적 분석을 통한 Hot Judder 저감의 실험적 연구
조상운(Sangwoon Cho),황선덕(Sunduk Hwang),장진성(Jinsung Jang),이정주(Jungju Lee),권성욱(Sungwook Kwon) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
This paper introduces hot judder, among the issues of NVH braking system, caused by hot spot on disc that generates unpleasant, anxious experience to the driver. Hot Judder generates around low frequency, effected by order analysis from the velocity of disc rotation. It is a phenomenon, which caused by occurrence of hot spot due to friction between disc and pad. Hot spot is the cause of the hot judder vibration. It transferred chassis, brake pedal and steering that is generated judder vibration. This study analyzes the cause of hot judder, according to the shape and property of a brake pad (type of slot, size of chamfer, compression rate and under layer). Thermal IR camera was used to visual analysis thermal behaviour and hot spot generation of disc. Correlation of DTV, BTV and thermal visual analysis were studied to analyze the cause of hot judder reduction.