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Resilience modeling and analysis of interdependent infrastructure systems

The infrastructures on which our society depends are interconnected and interdependent on multiple levels. The failure of one infrastructure can result in the disruption of other infrastructures, which can lead to severe economic disruption and loss of life or failure of services. Today, within the cyber-physical engineering and social world, all acting infrastructure systems are certain to be subjected to changes in their environment given by changing inputs, constraints, mechanisms, or interfaces. Moreover, when the infrastructures are interconnected the changes may impact not only the output of individual infrastructures, but also the output of the resulting coordinated operations. This work addresses the concept of resilience of interdependent infrastructures systems and compares the resultant system level resilience with component infrastructure systems resilience.