Quantitative ultrasonic tomography of high acoustic impedance contrast targets - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2012

Quantitative ultrasonic tomography of high acoustic impedance contrast targets

Régine Guillermin
Connectez-vous pour contacter l'auteur
Philippe Lasaygues
Guy Rabau
  • Fonction : Auteur
  • PersonId : 884243

Résumé

This study is concerned whith the ultrasonic imagery of elastic materials like cylinders or tubes by a diffraction tomography technic. Green's representaton is used to obtain an integral representation of the scattered field, and a discrete formulation of the inverse problem is obtained using a moment method. An iterative non-linear algorithm minimizing the discrepancy between the measured and computed scattered fields is used to reconstruct the sound speed profile in the target area. The minimization process is performed using a conjugated-gradient method. An experimental study with elastic targets immersed in water was performed. Cylindrical targets of various cross-sections have been selected. Inversions of both numerical and experimental data are presented and compared.
Fichier principal
Vignette du fichier
hal-00811160.pdf (587.85 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00811160 , version 1 (23-04-2012)

Identifiants

  • HAL Id : hal-00811160 , version 1

Citer

Régine Guillermin, Philippe Lasaygues, Guy Rabau. Quantitative ultrasonic tomography of high acoustic impedance contrast targets. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00811160⟩
59 Consultations
56 Téléchargements

Partager

Gmail Facebook X LinkedIn More