Title :

A model to predict modal radiation by finite-sized sources in composite plates with account of caustics

Author(s) :

Stévenin, Mathilde [Auteur]
Matériaux et Acoustiques pour MIcro et NAno systèmes intégrés - IEMN [MAMINA - IEMN]
Lhémery, Alain [Auteur]
Grondel, Sébastien [Auteur]
Matériaux et Acoustiques pour MIcro et NAno systèmes intégrés - IEMN [MAMINA - IEMN]

Journal title :

Physics Procedia

Pages :

622-625

Publisher :

Elsevier

Publication date :

2015

ISSN :

1875-3892

English keyword(s) :

Anisotropy
Guided electromagnetic wave propagation
Models
Transducers
Anisotropic plates
caustic
Composite plates
Energy paths
finite-sized source
Isotropic plates
Modal decomposition
Transducer surface
Intensive care units

HAL domain(s) :

Informatique [cs]
Informatique [cs]/Ingénierie assistée par ordinateur

English abstract : [en]

The guided wave field generated by finite size transducers in a composite plate is studied. For isotropic plates, Fraunhofer-like approximations can be found in the literature. Similar approximations fail when the plate ...
Show more >The guided wave field generated by finite size transducers in a composite plate is studied. For isotropic plates, Fraunhofer-like approximations can be found in the literature. Similar approximations fail when the plate is anisotropic. A new calculation method is proposed. Based on a modal decomposition, its principle is to integrate over the transducer surface as seen in energy directions from the calculation point. Special care is taken when dealing with energy paths in direction of caustics. To validate this method, some comparisons are made between our results and those obtained using a full integration over the surface of the source.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Comment :

cited By 0; Conference of ICU International Congress on Ultrasonics, ICU 2015 ; Conference Date: 11 May 2015 Through 14 May 2015

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL