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                <title xml:lang="en">Time-variant Reliability Analysis Based on AK-SYS</title>
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              <p>The objective of this paper is to investigate system reliability methods for time-variant reliability analysis.The main challenge in time-variant reliability analysis is dealing with low probabilities of failure whilecomputationally expensive performance functions are involved. Time-variant problems are often simplified by discretizing time intervals. This enables one to transform the initial problem to a system problem. System reliability methods can therefore be used to address time-variant reliability problems. AK-SYS is an efficient system reliability method which can be applied when costly-to-evaluate performance functions are considered. Application of this method for time-variant reliability problems is introduced in this paper that is supported with two academic examples from literature.</p>
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