Cost-effective degradation test plan for a nonlinear random-coefficients model
- Title
- Cost-effective degradation test plan for a nonlinear random-coefficients model
- Author
- 배석주
- Keywords
- Degradation test; D-optimal design; Fisher information matrix; Nonlinear random-coefficients model; Reliability
- Issue Date
- 2013-01
- Publisher
- Elsevier Science LTD
- Citation
- Reliability Engineering and System Safety, 2013, 110, P.68-79
- Abstract
- The determination of requisite sample size and the inspection schedule considering both testing cost and accuracy has been an important issue in the degradation test. This paper proposes a cost-effective degradation test plan in the context of a nonlinear random-coefficients model, while meeting some precision constraints for failure-time distribution. We introduce a precision measure to quantify the information losses incurred by reducing testing resources. The precision measure is incorporated into time-varying cost functions to reflect real circumstances. We apply a hybrid genetic algorithm to general cost optimization problem with reasonable constraints on the level of testing precision in order to determine a cost-effective inspection scheme. The proposed method is applied to the degradation data of plasma display panels (PDPs) following a bi-exponential degradation model. Finally, sensitivity analysis via simulation is provided to evaluate the robustness of the proposed degradation test plan. (C) 2012 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0951832012001901?via%3Dihubhttp://hdl.handle.net/20.500.11754/41520
- ISSN
- 0951-8320
- DOI
- 10.1016/j.ress.2012.09.010
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > INDUSTRIAL ENGINEERING(산업공학과) > Articles
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