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Optimal Constant-Stress Accelerated Degradation Test Plans Using Nonlinear Generalized Wiener Process
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-08-23
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Accelerated degradation test (ADT) has been widely used to assess highly reliable products’ lifetime.
To conduct an ADT, an appropriate degradation model and test plan should be determined in advance.
Although many historical studies have proposed quite a few models, there is still room for improvement.
Hence we propose a Nonlinear Generalized Wiener Process (NGWP) model with consideration of the effects of stress level, product-to-product variability, and measurement errors for a higher estimation accuracy and a wider range of use.
Then under the constraints of sample size, test duration, and test cost, the plans of constant-stress ADT (CSADT) with multiple stress levels based on the NGWP are designed by minimizing the asymptotic variance of the reliability estimation of the products under normal operation conditions.
An optimization algorithm is developed to determine the optimal stress levels, the number of units allocated to each level, inspection frequency, and measurement times simultaneously.
In addition, a comparison based on degradation data of LEDs is made to show better goodness-of-fit of the NGWP than that of other models.
Finally, optimal two-level and three-level CSADT plans under various constraints and a detailed sensitivity analysis are demonstrated through examples in this paper.
American Psychological Association (APA)
Chen, Zhen& Li, Shuo& Pan, Ershun. 2016. Optimal Constant-Stress Accelerated Degradation Test Plans Using Nonlinear Generalized Wiener Process. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1112838
Modern Language Association (MLA)
Chen, Zhen…[et al.]. Optimal Constant-Stress Accelerated Degradation Test Plans Using Nonlinear Generalized Wiener Process. Mathematical Problems in Engineering No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1112838
American Medical Association (AMA)
Chen, Zhen& Li, Shuo& Pan, Ershun. Optimal Constant-Stress Accelerated Degradation Test Plans Using Nonlinear Generalized Wiener Process. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1112838
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1112838