RESEARCH PAPER
A comprehensive and practical reliability allocation method considering failure effects and reliability costs
1
College of Mechanical Engineering and State Key Lab Mech Transmiss, Chongqing University, Chongqing 400044, China
2
vander_yu@163.com
3
College of Mechanical and Energy Engineering, Shaoyang University, Shaoyang 422000, China
Publication date: 2018-06-30
Eksploatacja i Niezawodność – Maintenance and Reliability 2018;20(2):244-251
KEYWORDS
reliability allocationreliability costfailure modes and effect analysis (FMEA)relative reliabilityfuzzy methods
ABSTRACT
In view of the drawbacks in existing allocation methods which are incomplete considerations and poor practicality, a comprehensive fuzzy allocation method considering failure effects and reliability costs is proposed. Fuzzy linguistics and triangular fuzzy
numbers are used to evaluate the uncertainty and subjective factors in allocation process. The traditional risk priority numbers
(RPNs) are modified to overcome the shortages which are the same factor weights and equal difference of failure effects in original
methods. State of the arts, components intricacy and working conditions are used to construct the reliability costs model, which
solves the difficulties of costs statistics and avoids the sophisticated calculations which exist in current allocation methods. The
relationship between reliability costs and potential risk of subsystem is studied and the value range of it is given in this paper. A
case example is given to illustrative the scientificity and practicability of proposed allocation method.
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CITATIONS (12):
| eISSN: | 2956-3860 |
| ISSN: | 1507-2711 |
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