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- W2331029168 abstract "In complex engineering problems, reducible systematic modeling errors are inevitable due to lack of complete knowledge of the phenomenology and errors from the infidelity of mathematical approximation. This paper investigates the use of a hybrid possibilisticprobabilistic method in reliability based damage tolerance (RBDT) analysis in order to better address reducible systematic uncertainties such as modeling error. A hybrid possibilistic-probabilistic approach addresses the uncertainty analysis and management issues by treating irreducible randomness with probability distributions and reducible errors with possibility functions. Because the uncertainty can be separated into probability or possibility, this approach provides a more flexible framework for mixing the data and expert knowledge. An important benefit of the approach is to allow the decision makers to identity what uncertainty reduction can potentially be achieved by decreasing the uncertainties of some reducible variables. The foundation of the RBDT methodology is a two-stage importance sampling (TIS) method that simulates inspection and repair effects. The errorchecking procedure of TIS addresses the major shortcoming of the most probable point (MPP) -based approximation methods and leads to a robust and efficient sampling method, assuming that the repaired parts are perfect and will not fail. A demonstration example of a dynamic rotorcraft component suggests that the possibilistic-probabilistic hybrid method combined with TIS method is well suited to address the reducible systematic error in RBDT analysis." @default.
- W2331029168 created "2016-06-24" @default.
- W2331029168 creator A5028732026 @default.
- W2331029168 date "2008-06-14" @default.
- W2331029168 modified "2023-10-12" @default.
- W2331029168 title "Improving Probabilistic Damage Tolerance Analysis for Inspection Optimization: Possibilistic-Probabilistic Approach" @default.
- W2331029168 cites W2280644057 @default.
- W2331029168 doi "https://doi.org/10.2514/6.2008-6050" @default.
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