Abstract
Sample size and inspection schedule are essential components in degradation test plan. In practice, an experimenter is required to determine a certain level of trade-off between total resources and precision of the degradation test. This paper develops a design of cost-efficient degradation test plan in the context of a nonlinear random-coefficients model, while satisfying precision constraints for the failure-time distribution derived from the degradation testing data. The test plan introduces a precision metric to identify the information losses due to reduction of test resources, based on the cost function to balance the test plan. In order to determine a cost-efficient inspection schedule, a hybrid genetic algorithm is used to solve a cost optimization problem under test precision constraints. The proposed method is applied to degradation data of plasma display panels (PDPs). Finally, sensitivity analysis is provided to show the robustness of the proposed test plan.
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Kim, SJ., Bae, S.J. (2017). Degradation Test Plan for a Nonlinear Random-Coefficients Model. In: Chen, DG., Lio, Y., Ng, H., Tsai, TR. (eds) Statistical Modeling for Degradation Data. ICSA Book Series in Statistics. Springer, Singapore. https://doi.org/10.1007/978-981-10-5194-4_7
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DOI: https://doi.org/10.1007/978-981-10-5194-4_7
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