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|Title:||Bayesian Analysis of Flaw Sizing Data of NESC III Exercise|
|Authors:||GANDOSSI LUCA; SIMOLA Kaisa|
|Citation:||INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING vol. 83 p. 654-662|
|Publisher:||ELSEVIER SCI LTD|
|Type:||Articles in Journals|
|Abstract:||Non-destructive inspections are performed to give confidence on the non-existence of flaws exceeding a certain safe limit in the inspected structural component. The principal uncertainties related to these inspections are the probability of not detecting an existing flaw longer than a given size, the probability of a false call, and the uncertainty related to the sizing of a flaw. Inspection reliability models aim at accounting for these uncertainties. This paper presents the analysis of sizing uncertainty of flaws for the results of NESC III Round Robin Trials on defect-containing dissimilar metal welds. Model parameters are firstly estimated to characterize the sizing capabilities of various teams. A Bayesian updating of flaw size distribution is then demonstrated by combining information from measurement results and sizing performance.|
|JRC Institute:||Institute for Energy and Transport|
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