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Published in:
2013 | OriginalPaper | Chapter
A New Bounded Intensity Function for Repairable Systems
Authors : Fu-Kwun Wang, Yi-Chen Lu
Published in: Proceedings of the Institute of Industrial Engineers Asian Conference 2013
Publisher: Springer Singapore
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Abstract
Lifetime failure data might have a bathtub-shaped failure rate. In this study, we propose a new model based on a mixture of bounded Burr XII distribution and bounded intensity process, to describe a failure process including a decreasing intensity phase, an increasing phase, and an accommodation phase for repairable systems. The estimates of the model parameters are easily obtained using the maximum likelihood estimation method. Through numerical example, the results show that our proposed model outperforms other existing models, such as superposed power law process, Log-linear process-power law process, and bounded bathtub intensity process with regard to mean square errors.