| Development of Reliability Analysis Procedures for Repairable Systems with Interval Failure Time Data and a Related Case Study |
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Cha-Hyun Cho, Bong-Jin Yum |
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KAIST |
| 구간 고장 데이터가 주어진 수리가능 시스템의 신뢰도 분석절차 개발 및 사례연구 |
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조차현, 염봉진 |
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한국과학기술원 |
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| Abstract |
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The purpose of this paper is to develop reliability analysis procedures for repairable systems with interval failure time data and apply the procedures for assessing the storage reliability of a subsystem of a certain type of guided missile. In the procedures, the interval failure time data are converted to pseudo failure times using the uniform random generation method, mid-point method or equispaced intervals method. Then, such analytic trend tests as Laplace, Lewis-Robinson, Pair-wise Comparison Nonparametric tests are used to determine whether the failure process follows a renewal or non-renewal process. Monte Carlo simulation experiments are conducted to compare the three conversion methods in terms of the statistical performance for each trend test when the underlying process is homogeneous Poisson, renewal, or non-homogeneous Poisson. The simulation results show that the uniform random generation method is best among the three. These results are applied to actual field data collected for a subsystem of a certain type of guided missile to identify its failure process and to estimate its mean time to failure and annual mean repair cost. |
| Key Words:
Interval Failure Time Data, Repairable System, Trend Test, Renewal Process, Storage Reliability |
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