This paper is a case study of reliability assessment with field warranty data of Clutch Master Cylinder(CMC) in hydraulic clutch system. We estimate lifetime distribution using field warranty data which contain much useful information for understanding reliability of the system in the real-world environments. However, the estimated parameters are far from existing reference values, which seems to be caused right censored field warranty data. To modify the parameters, we use the information of the durability test which is performed to verify that the lifetime of the item meets the required level. After that, we can observe that the modified parameters are closer to the existing reference values. This case study shows a possible idea to supplement lack of right censored field warranty data and its applicability

1. 서론
 2. 유압클러치시스템(Hydraulic Clutch System) 
 3. 신뢰성 척도분석 및 해석
 4. 결론
 참고문헌

• Sang Cheon Lee(Division of Industrial Systems Engineering, Gyeongsang NationalUniversity) | 이상천
• Jong Hun Park(Department of Business Administration, Catholic University of Daegu) | 박종훈 교신저자