Balancing burn-in and mission times in environments with catastrophic and repairable failures |
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Authors: | Mark Bebbington Chin-Diew Lai |
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Affiliation: | a Institute of Fundamental Sciences - Statistics, Massey University, Private Bag 11222, Palmerston North, New Zealand b Department of Statistical and Actuarial Sciences, University of Western Ontario, London, Ontario, Canada N6A 5B7 |
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Abstract: | In a system subject to both repairable and catastrophic (i.e., nonrepairable) failures, ‘mission success’ can be defined as operating for a specified time without a catastrophic failure. We examine the effect of a burn-in process of duration τ on the mission time x, and also on the probability of mission success, by introducing several functions and surfaces on the (τ,x)-plane whose extrema represent suitable choices for the best burn-in time, and the best burn-in time for a desired mission time. The corresponding curvature functions and surfaces provide information about probabilities and expectations related to these burn-in and mission times. Theoretical considerations are illustrated with both parametric and, separating the failures by failure mode, nonparametric analyses of a data set, and graphical visualization of results. |
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Keywords: | Burn-in Repairs Curvature Reliability |
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