Designing a degradation experiment

Designing a degradation experiment

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Article ID: iaor20002043
Country: United States
Volume: 46
Issue: 6
Start Page Number: 689
End Page Number: 706
Publication Date: Sep 1999
Journal: Naval Research Logistics
Authors: ,
Keywords: testing
Abstract:

Degradation experiments are widely used to assess the reliability of highly reliable products which are not likely to fail under the traditional life tests. In order to conduct a degradation experiment efficiently, several factors, such as the inspection frequency, the sample size, and the termination time, need to be considered carefully. These factors not only affect the experimental cost, but also affect the precision of the estimate of a product's lifetime. In this paper, we deal with the optimal design of a degradation experiment. Under the constraint that the total experimental cost does not exceed a predetermined budget, the optimal decision variables are solved by minimizing the variance of the estimated 100pth percentile of the lifetime distribution of the product. An example is provided to illustrate the proposed method. Finally, a simulation study is conducted to investigate the robustness of this proposed method.

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