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다구찌 기법을 이용한 FCM 가스켓의 강건 설계에 관한 연구

A Study of Robust Design of FCM Gasket Using Taguchi Method

  • 정진은 (한국기술교육대학교 기계공학부) ;
  • 안중규 (한국기술교육대학교 대학원 기계공학과)
  • Chung, Jin-Eun (School of Mechanical Engineering, Korea University of Technology & Education) ;
  • Ahn, Jueng-Kyu (Department of Mechanical Engineering, Graduate School, Korea University of Technology & Education)
  • 투고 : 2013.04.23
  • 심사 : 2013.07.11
  • 발행 : 2013.07.31

초록

본 연구에서는 비석면 FCM(Fiber-elastomer Coated Metal) 가스켓의 강건 설계를 수행하였다. 이를 위하여 직교배열표를 사용한 실험계획법에 따라 전단력을 측정하는 실험을 수행하고 다구찌 기법을 사용하여 망대 SN비를 산출하여 영향을 미치는 제어인자를 파악하고 분산 분석을 수행하였다. 전단력에 영향을 미치는 제어인자로 온도, 압력, 시간 및 습도를 선택하였으며 각 제어인자에 대하여 3수준을 고려하여 $L_9(3^4)$ 직교배열표를 작성하였고, 이에 근거하여 측정 실험을 수행하였다. 다구찌 기법을 사용하여 망대 SN비를 산출하고 델타 통계량을 계산하였다. 시간의 델타 통계량이 0.93으로, 시간이 전단력에 가장 큰 영향을 미치는 결과를 얻었다. 다음으로 온도, 압력, 습도 순으로 영향을 미쳤다. 또한 시간 80초, 온도 $200^{\circ}C$, 압력 90 $kgf/cm^2$, 습도 60 %RH의 조건에서 전단력이 최대가 됨을 보였다. 이에 대한 분산 분석을 수행한 결과 시간과 온도는 각각 p값 0.037, 0.098을 보여 신뢰수준 95%와 90%에서 유의함을 밝혔다.

This paper deals with the robust design of the non-asbestos FCM(Fiber-elastomer Coated Metal) gasket. In order to this, the measurement of the shear stress based on the design of experimet using the orthogonal table was carried out and the control factors for shear stress using the larger-the-better SN ratios with the Taguchi method were evaluated. In addition, the analysis of variance for SN ratios was conducted. The temperature, pressure, duration time and humidity were selected as the control factors. The orthogonal table $L_9(3^4)$ was made of 3 levels for each factor and the measurement of shear stress was acomplished on the base of the table. Delta statistics of time is the highest value 0.93 and therefore the time affect the largest effect on the shear stress of gasket. Also from the analysis, the shear stress shows maximun at the duration time 80 sec, temperature $200^{\circ}C$, pressure 90 $kgf/cm^2$, humidity 60 %RH. P values of duration time and temperature as a results of the analysis of variance are 0.037 and 0.098. Therefore the analysis has significant each with 95% and 90% confidence level.

키워드

참고문헌

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