Design and Risk Evaluation of Reliability Demonstration Test for Hierarchical Systems With Multilevel Information Aggregation
| Autor: | Weidong Zhang, Qingpei Hu, Huairui Guo, Mingyang Li, Jian Liu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
021103 operations research business.industry 0211 other engineering and technologies 02 engineering and technology 01 natural sciences Test (assessment) Risk evaluation Reliability engineering 010104 statistics & probability Life-critical system Sample size determination Component (UML) Information aggregation 0101 mathematics Electrical and Electronic Engineering Safety Risk Reliability and Quality business Reliability (statistics) Test data |
| Zdroj: | IEEE Transactions on Reliability. 66:135-147 |
| ISSN: | 1558-1721 0018-9529 |
| DOI: | 10.1109/tr.2016.2619689 |
| Popis: | As reliability requirements become increasingly demanding for many engineering systems, conventional system reliability demonstration testing (SRDT) based on the number of failures depends on a large sample of system units. However, for many safety critical systems, such as missiles, it is prohibitive to perform such testing with large samples. To reduce the sample size, existing SRDT methods utilize test data from either system level or component level. In this paper, an aggregation-based SRDT methodology is proposed for hierarchical systems by utilizing multilevel reliability information of components, subsystems, and the overall system. Analytical conditions are identified for the proposed method to achieve lower consumer risk. The performances of different SRDT design strategies are evaluated and compared according to their consumer risks. A numerical case study is presented to illustrate the proposed methodology and demonstrate its validity and effectiveness. |
| Databáze: | OpenAIRE |
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