Detail publikace

PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

Petr SEDLAK, Jiri MAJZNER, Pavel TOFEL and Josef SIKULA

Originální název

PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The paper presents the numerical approach and results for piezoelectric transducers electrical and noise characteristics. A method for the numerical analysis of piezoelectric media is based on finite element calculations. The own algorithm was developed in MATLAB. For simplicity, only the piezoelectric parts of transducers were under study. The three identical samples were investigated and compared by two different ways. The theoretical result corresponds with experimental results which were measured by noise measurement set-up. The main difference between the numerical result and other methods could be in consequence of computing with constant relative permittivity. The agreement can be done only for the first resonant mode. To coincide the experiment with theoretical model, it is necessary to include the piezoelectric material permittivity frequency dependence. With increasing frequency the permittivity decreases. Nevertheless the simulations give the good estimation for designer of piezoceramic sensors.

Klíčová slova

piezoelectric transducers, noise spectral density, modelling

Autoři

Petr SEDLAK, Jiri MAJZNER, Pavel TOFEL and Josef SIKULA

Rok RIV

2006

Vydáno

7. 11. 2006

Nakladatel

Czech Society for Nondestructive Testing

Místo

Brno

ISBN

80-214-3290-X

Kniha

Defektoskopie 2006 Proceeding

Strany od

217

Strany do

224

Strany počet

8

BibTex

@inproceedings{BUT19928,
  author="Petr {Sedlák} and Jiří {Majzner} and Pavel {Tofel} and Josef {Šikula}",
  title="PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING",
  booktitle="Defektoskopie 2006 Proceeding",
  year="2006",
  pages="8",
  publisher="Czech Society for Nondestructive Testing",
  address="Brno",
  isbn="80-214-3290-X"
}