Generic metrics and quantitative approaches for system resilience as a function of time

    Research output: Contribution to journalArticlepeer-review

    785 Scopus citations

    Abstract

    Resilience is generally understood as the ability of an entity to recover from an external disruptive event. In the system domain, a formal definition and quantification of the concept of resilience has been elusive. This paper proposes generic metrics and formulae for quantifying system resilience. The discussions and graphical examples illustrate that the quantitative model is aligned with the fundamental concept of resilience. Based on the approach presented it is possible to analyze resilience as a time dependent function in the context of systems. The paper describes the metrics of network and system resilience, time for resilience and total cost of resilience. Also the paper describes the key parameters necessary to analyze system resilience such as the following: disruptive events, component restoration and overall resilience strategy. A road network example is used to demonstrate the applicability of the proposed resilience metrics and how these analyses form the basis for developing effective resilience design strategies. The metrics described are generic enough to be implemented in a variety of applications as long as appropriate figures-of-merit and the necessary system parameters, system decomposition and component parameters are defined.

    Original languageEnglish
    Pages (from-to)114-122
    Number of pages9
    JournalReliability Engineering and System Safety
    Volume99
    DOIs
    StatePublished - Mar 2012

    Keywords

    • Network analysis
    • Quantitative methods
    • Restoration
    • System resilience

    Fingerprint

    Dive into the research topics of 'Generic metrics and quantitative approaches for system resilience as a function of time'. Together they form a unique fingerprint.

    Cite this