Modeling of transient deformation of piezoelectric ceramics (US NDE)

A method based on a finite-element analysis that permits the calculation and the visualization of deformations of ultrasonic transducers, in different configurations is presented. The method uses a Fourier series synthesis giving deformation of the free surface and electrical admittance for wide fre...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 1992-03, Vol.39 (2), p.293-301
Main Authors: Lanceleur, P., de Belleval, J.F., Mercier, N.
Format: Article
Language:English
Subjects:
Admittance
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Ceramics
Chemical industry and chemicals
Deformable models
Electrotechnical and electronic ceramics
Exact sciences and technology
Finite element methods
Fourier series
Frequency synthesizers
Geometry
Technical ceramics
Testing
Ultrasonic transducers
Visualization
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Summary:A method based on a finite-element analysis that permits the calculation and the visualization of deformations of ultrasonic transducers, in different configurations is presented. The method uses a Fourier series synthesis giving deformation of the free surface and electrical admittance for wide frequency bands by the use of finite-element procedures previously developed at Universite de Technologie de Compiegne (UTC). The method was originally developed for the monochromatic case. The authors report on the adaptation and validation of the method for the multifrequency excitation case, which is a more realistic approach used in the field of ultrasonic NDE. Several geometries were tested. In spite of the limitations of the method, due to the calculation requirements, the results show the role of the radial displacement behavior usually neglected in monodimensional analysis.< >
ISSN:0885-3010
1525-8955
DOI:10.1109/58.139128