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ECOLE SUPÉRIEURE D'ÉLECTRICITÉ Une grande école d'ingénieurs au cœur des sciences de l'information,de l'énergie et des systèmes |
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Conference papers
Influence of partially known parameter on flaw characterization in Eddy Current Testing by using a random walk MCMC method based on metamodeling
Abstract : First, we present the implementation of a random walk Metropolis-within-Gibbs (MWG) sampling method in flaw characterization based on a metamodeling method. The role of metamodeling is to reduce the computational time cost in Eddy Current Testing (ECT) forward model calculation. In such a way, the use of Markov Chain Monte Carlo (MCMC) methods becomes possible. Secondly, we analyze the influence of partially known parameters in Bayesian estimation. The objective is to evaluate the importance of providing more specific prior information. Simulation results show that even partially known information has great interest in providing more accurate flaw parameter estimations. The improvement ratio depends on the parameter dependence and the interest shows only when the provided information is specific enough.
Cited literature [14 references]
https://hal-supelec.archives-ouvertes.fr/hal-01101685
Contributor : Marc Lambert <>
Submitted on : Friday, January 9, 2015 - 1:37:13 PM
Last modification on : Wednesday, April 8, 2020 - 3:21:37 PM
Document(s) archivé(s) le : Friday, April 10, 2015 - 10:36:23 AM
Contributor : Marc Lambert <>
Submitted on : Friday, January 9, 2015 - 1:37:13 PM
Last modification on : Wednesday, April 8, 2020 - 3:21:37 PM
Document(s) archivé(s) le : Friday, April 10, 2015 - 10:36:23 AM
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