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Piezoelectric transducer for thermoacoustic imagery Détection piézoélectrique en imagerie thermoacoustique

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In the present work, a piezoelectric transducer is studied for thermoacoustic imaging. We first present generalities on thermoacoustic imaging. Then a modelisation of the behaviour of the piezoelectric ceramic in the external environment is proposed. After we have verificated experimentally the indirect effect and we have compared the performances of PZT with PVDF, we use a piezoelectric transducer which resonate in the frequency bandwidth 0–100 kHz to achieve depth imagery.

Cette étude présente la mise en oeuvre d'un capteur piézo-életrique pour l'imagerie thermoacoustique. Aprés avoir présenté le principe général de l'imagerie thermoacoustique, une modélisation du comportement de la céramique piézo-électrique en présence de son environnement extérieur est propsée. La vérification expérimentale de l'effet indirect et la comparaison des performances entre le PZT et la PVDF sont effectuées. Un capteur piézo-électrique compact résonnant entre 0 et 100 kHz est utilisé pour la réalisation d'images en profondeur.
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Language: French

Document Type: Research Article

Publication date: September 1, 1997

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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