Failure-Mode Importance Measures in System Reliability Analysis
Publication: Journal of Engineering Mechanics
Volume 140, Issue 11
Abstract
To quantitatively estimate the contributions of component failure modes to system output, failure-mode importance measures have been proposed in this paper. This issue is discussed in two schemes: in Scheme 1, failure-mode importance is measured by the change in the characteristics of the system output after removal of the interested failure mode; and in Scheme 2, failure-mode importance is measured by the expected change in the characteristics of the system output after fixing the failure mode of interest at nominal values. Properties and the computational strategies of the failure-mode importance measures also are presented. Discussions with numerical and engineering examples demonstrate that the importance measures are of great significance for the purpose of system improvement.
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Acknowledgments
This work was supported by the Nature Science Foundation of China (Grants 51175425 and 51308459) and the Research Fund for the Doctoral Program of Higher Education of China (Grant 20116102110003).
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Published In
Journal of Engineering Mechanics
Volume 140 • Issue 11 • November 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 31, 2013
Accepted: Mar 26, 2014
Published online: Apr 22, 2014
Discussion open until: Sep 22, 2014
Published in print: Nov 1, 2014
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