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Evaluation of Ultrasonic Velocity and Attenuation by Processing the Electric Impedance of an Inserted Piezoelectric Ceramic – Application to Characterization of Polymer Materials

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An original ultrasonic method for characterizing materials is described here. This method is based on processing the electric impedance due to the thickness deformation of a piezoelectric disk in contact with the material to be investigated. As detailed in previous papers such a parameter may be modelized using a one-dimensional analytical model. Then using the analytical relation for the electric impedance and the data experimentally obtained, we develop the same signal processing treatments to determine the acoustic properties (ultrasonic velocity and attenuation) of the medium in contact with the piezoelectric disk. Finally, the validity of this method is shown by confronting the results thus obtained with the data given in the literature.
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Document Type: Research Article

Publication date: March 1, 1998

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  • 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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