Publication detail

PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

Petr SEDLAK, Jiri MAJZNER, Pavel TOFEL and Josef SIKULA

Original Title

PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

English Title

PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING

Type

conference paper

Language

en

Original Abstract

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.

English abstract

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.

Keywords

piezoelectric transducers, noise spectral density, modelling

RIV year

2006

Released

07.11.2006

Publisher

Czech Society for Nondestructive Testing

Location

Brno

ISBN

80-214-3290-X

Book

Defektoskopie 2006 Proceeding

Pages from

217

Pages to

224

Pages count

8

BibTex


@inproceedings{BUT19928,
  author="Petr {Sedlák} and Jiří {Majzner} and Pavel {Tofel} and Josef {Šikula}",
  title="PIEZOELECTRIC TRANSDUCERS: ELECTRICAL AND NOISE CHARACTERISTICS MODELLING",
  annote="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.",
  address="Czech Society for Nondestructive Testing",
  booktitle="Defektoskopie 2006 Proceeding",
  chapter="19928",
  institution="Czech Society for Nondestructive Testing",
  year="2006",
  month="november",
  pages="217",
  publisher="Czech Society for Nondestructive Testing",
  type="conference paper"
}