Influence of partially known parameter on flaw characterization in Eddy Current Testing by using a random walk MCMC method based on metamodeling

Caifang Cai 1 Thomas Rodet 2 Marc Lambert 1
1 L2S - Laboratoire des signaux et systèmes
2 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie
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.
Keywords : flaw characterization Eddy Current Testing random walk Markov Chain Monte Carlo (MCMC) metamodeling
Type de document :
Communication dans un congrès
NCMIP 2014, May 2014, Cachan, France. Proceedings of the 4th International Workshop on New Computational Methods for Inverse Problems, 2014, 〈10.1088/1742-6596/542/1/012009〉
Liste complète des métadonnées

Littérature citée [14 références]  Voir  Masquer  Télécharger
https://hal-supelec.archives-ouvertes.fr/hal-01101685
Contributeur : Marc Lambert <>
Soumis le : vendredi 9 janvier 2015 - 13:37:13
Dernière modification le : vendredi 13 avril 2018 - 14:14:07
Document(s) archivé(s) le : vendredi 10 avril 2015 - 10:36:23

Fichier

Partially_known_ECT_random_wal...
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

SUPELEC | SUP_LSS | SATIE | L2S | SUP_DRE | ENS-CACHAN | UNIV-CERGY | IFSTTAR | SATIE-MOSS | SATIE-SIAME

Citation

Caifang Cai, Thomas Rodet, Marc Lambert. Influence of partially known parameter on flaw characterization in Eddy Current Testing by using a random walk MCMC method based on metamodeling. NCMIP 2014, May 2014, Cachan, France. Proceedings of the 4th International Workshop on New Computational Methods for Inverse Problems, 2014, 〈10.1088/1742-6596/542/1/012009〉. 〈hal-01101685〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

362

Téléchargements de fichiers

109

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD