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      • Performance assessment of two unit’s redundant system under different failure and repair policies using copula

        Jyoti Gulati,V. V. Singh,Dilip Kumar Rawal 한국신뢰성학회 2018 International Journal of Reliability and Applicati Vol.19 No.2

        This paper deals with the study of reliability measures of a two-units redundant system under different types of failure and two types of repair. The system consists of two redundant units attached to the main unit. Initially, in starting, the main unit start working and perform the task. Whenever the main unit fails, one of the redundant units takes the load of the failed unit and the fail unit assigned for repair or waits for repair if the repair facility/repairman available or is not available. After, failure of any one of the redundant unit ceases the other redundant unit take a load of the failed units. Thus, the system will fail if both redundant units fail before the repair of the main unit. An operator is handling the system; hence, the human error can also appear due to mishandling the system at any stage during its operations. All failure rates constant and follows an exponential distribution, but the repair follows two types of distributions general distribution and Gumbel-Hougaard family copula distribution. The system studied by using supplementary variable and Laplace transform wherein some essential measures of reliability have discussed.

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