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완전요인 배치법을 이용한 이륜자동차 디스크 브레이크의 마찰계수와 온도분포에 관한 연구
류미라,박흥식 동아대학교 생산기술연구소 2006 生産技術硏究所硏究論文集 Vol.11 No.-
The effect of manufacturing parameters on friction characteristics of motorcycle break system was studied using a disk-on-pad type friction tester. Such parameters conditions have an effect on the frictional factor such as applied load, sliding speed, and number of ventilated disk hole. However, it is difficult to know the mutual relation of these factors. In this study, the friction characteristics using design of experiment containing 3 elements were investigated for an optimal condition for the best motorcycle break system employing Full factorial design. From this study, the result was shown that the applied load in frictional factors was the most important, next to sliding speed, number of ventilated disk hole.
삼원배치법을 이용한 자동차 후면 열선의 성능 평가에 관한 연구
류미라,전환영 한국기계기술학회 2018 한국기계기술학회지 Vol.20 No.3
Both theoretical and experimental investigations were conducted to analyze defrosting behavior of a window heater operating in the low outdoor temperature(-20℃). To achieve this purpose, first a warm-chamber experiment(23℃) were performed to measure inner and outer surface temperature of the rear window as functions of both time and position. Secondly, a cold chamber experiment was made to continuously record defrosting process of the frosted window. Therefore this study was carried out to presume for mutual relation of analysis condition to get the optimum temperature distribution by three-way layout. The results shown that coefficient of determination has a fine reliability over 99.77%, 99.85% and temperature distribution is made by three-way layout.
프레스 성형법을 이용한 자동차용 카본 휠 금형 설계에 관한 연구
류미라,전환영,박철현,배희은,배효준 한국기계기술학회 2016 한국기계기술학회지 Vol.18 No.6
The driving efficiency in vehicles depends on a weight lightening of wheels. Lightweight aluminum wheel research has been widespread over the years. Carbon wheels reduce weight by 50% compared to aluminum wheels and have high tensile strength and low heat absorption. This study was investigated to apply the carbon fiber of molding pressure to produce the carbon wheel. Carbon wheel of mold structure analysis was performed.