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Quasistatic and dynamic properties of 1-3 composites made by soft molding

Quasistatische und dynamische Eigenschaften von 1-3 Verbundwerkstoffen, hergestellt mittels Weichformen
 
: Gebhardt, S.; Schönecker, A.; Steinhausen, R.; Seifert, W.; Beige, H.

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Journal of the European Ceramic Society 23 (2003), Nr.1, S.153-159
ISSN: 0955-2219
Englisch
Zeitschriftenaufsatz
Fraunhofer IKTS ()
soft molding; dynamic properties; quasistatic property; soft mold process; frequency; ultrasonic transducer; preparation; modeling; square arrangement; vibrational characteristic; rod geometry; rod arrangement; impedance spectrum; modal analysis; finite element method package; composite performance; passive polymer matrix; hexagonal arrangement; nonregular arrangement; PZT rod; finite element method modeling; analytical solution; PZT; Verbundwerkstoff; dielektrische Eigenschaft; Finite-Elemente-Methode (FEM); Piezoelektrizität; Bleizirkonattitanat; Stab; Dielektrizitätskonstante; Impedanz; Frequenz

Abstract
The development of the soft mold process allows for the preparation of fine scale 1-3 composites with PZT rods of different size, shape and spacing, which can be used as ultrasonic transducers for frequencies >5 MHz. [Gebhardt, S., Schonecker, A., Steinhausen, R., Hauke, T., Seifert, W. & Beige, H., Fine scale 1-3 composites fabricated by the soft mold process: preparation and modeling. Ferroelectric, 241 (2000) 67]. By this method, composites with a square, hexagonal and non regular arrangement of PZT rods of different shape have been fabricated and characterized by measuring their quasistatic and dynamic properties. The experimental results were compared with data from finite element method (FEM) modeling and analytical solutions. The vibrational characteristics of the composites were strongly influenced by the rod geometry and the rod arrangement. To evaluate the 1-3 composite performance, modal analysis and modeling of the impedance spectrum were carried out using the FEM package ANSYS.

: http://publica.fraunhofer.de/dokumente/N-17047.html