Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
806536 | Reliability Engineering & System Safety | 2007 | 11 Pages |
Abstract
Two approaches to the calculation of probability of loss of assured safety (PLOAS) in temperature dependent weak link/strong link systems are described and compared on the basis of three test problems. The approaches differ in that the first approach permits a separation of epistemic and aleatory uncertainty in the calculation of PLOAS and the second approach combines epistemic and aleatory uncertainty before the calculation of PLOAS. A discrepancy in the results obtained with the test problems led to the identification of an implementation error for one of the approaches. The importance and efficacy of well-designed verification test problems are demonstrated.
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Mechanical Engineering
Authors
J.C. Helton, J.D. Johnson, W.L. Oberkampf,