Topological Imaging of Defects in Anisotropic Plates

Abstract : Topological imaging is an emerging ultrasonic imaging method based on two computations performed for the so-called reference medium. The reference medium should correspond as close as possible to the experimental medium in the absence of defects. The topological image will then highlight all the differences between the investigated experimental medium and the reference medium. The presented work aims at applying this method to the detection, location and imaging of defects in composite plates. If the propagation can be properly simulated and the associated experience performed, the defects of the medium can be imaged whatever the complexity of the propagation process. Wave propagation in composite plates is here computed considering an equivalent homogeneous anisotropic medium in the frequency regime. First a numerical experiment is presented. It consists in the investigation of a strongly anisotropic medium using two different wave modes simultaneously. Three defects are accurately located and imaged in the medium. Secondly, a real experiment is investigating an impacted quadratic composite plate is investigated with a single guided mode. Two impacts are well detected and located.
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
Liste complète des métadonnées

Littérature citée [25 références]  Voir  Masquer  Télécharger

https://hal.inria.fr/hal-01021220
Contributeur : Anne Jaigu <>
Soumis le : mercredi 9 juillet 2014 - 10:23:25
Dernière modification le : mercredi 12 septembre 2018 - 01:27:04
Document(s) archivé(s) le : jeudi 9 octobre 2014 - 11:24:50

Fichier

0384.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01021220, version 1

Citation

Samuel Rodriguez, Michel Castaings, Marc Deschamps, Eric Ducasse. Topological Imaging of Defects in Anisotropic Plates. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01021220〉

Partager

Métriques

Consultations de la notice

237

Téléchargements de fichiers

374