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브레이크 패드의 모재강도에 대한 형상 및 제조공정의 영향 연구
김창석(Changseok Kim),심재환(Jaehwan Shim),배지수(Jisu Bae),현보원(Bowon Hyun) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
The physical properties of brake friction materials vary by shape or manufacturing condition. Futhermore, the shape of the lining is tuned to reduce braking noise. The strength of the friction materials is an important characteristic to prevent breakage and is directly related to braking performance. In this study, a method to check the strength of the friction materials and the effectiveness of each control factor on it is proposed through the evaluation of some cases. Also the results were reverified through finite element analysis. Through this study, it was found that the shape and contact area of friction materials greatly affects the strength of it.
디스크 부식에 의한 DTV 변화에 패드 마모가 미치는 영향 연구
이완규(Wankyu Lee),이강국(Kangkuk Lee),이인호(Inho Lee),현보원(Bowon Hyun),이성주(Seongju Lee) 한국자동차공학회 2019 한국자동차공학회 부문종합 학술대회 Vol.2019 No.5
The rust judder due to the disc corrosion have been known as a serious problem on automobile. Among various sources on the rust judder of vehicle, in this paper, the influence of brake pad wear particles was investigated using rig unit and vehicle with different friction materials. Results showed that the amount of wear particles critically affected to the change of DTV and to make a contact trace on the disc surface after corrosion test. In the case of pad material with the largest wear amount, the vibration of brake pedal and steering after corrosion was strongly felt during all braking stop in contrast with wear life enhanced pad material. Furthermore, the wear amount of disc was related with the linear change of DTV by corrosion. This study shows that the occurrence level of rust judder due to friction material can be predicted at the development stage of friction material.