On the Boolean extension of the Birnbaum importance to non-coherent systems
The Birnbaum importance measure plays a central role in reliability analysis. It has initially been introduced for coherent systems, where several of its properties hold and where its computation is straightforward. This work introduces a Boolean expression for the notion of criticality that allows...
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Veröffentlicht in: | Reliability engineering & system safety 2017-04, Vol.160, p.191-200 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The Birnbaum importance measure plays a central role in reliability analysis. It has initially been introduced for coherent systems, where several of its properties hold and where its computation is straightforward. This work introduces a Boolean expression for the notion of criticality that allows the seamless extension of the Birnbaum importance to non-coherent systems. As a key feature, the novel definition makes the computation and encoding straightforward with well-established techniques such as Binary Decision Diagrams (BDDs) or Fault Trees (FTs). Several examples and a case study illustrate the findings.
•We propose a Boolean expression for the notion of criticality in coherent and non-coherent systems.•The notion is connected with the Birnbaum importance measure.•The connection with Andrew's and Beeson extension is discussed.•The Boolean expression allows straightforward encoding in Binary Decision Diagrams. |
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ISSN: | 0951-8320 1879-0836 |
DOI: | 10.1016/j.ress.2016.12.013 |