Publication detail

NOISE IN ULTRASONIC TRANSDUCER

MAJZNER, J. SEDLÁKOVÁ, V. TOFEL, P. SEDLÁK, P.

Original Title

NOISE IN ULTRASONIC TRANSDUCER

Type

conference paper

Language

English

Original Abstract

Thermal noise and polarization noise are the main sources of voltage or current fluctuations in piezoceramic samples which are used as acoustic emission sensors or ultrasonic transducers. Noise is related to the energy dissipation and due to that the conductivity is proportional to the imaginary part of susceptibility and to the frequency. The resonance peaks were observed in the frequency range which corresponds with the geometrical dimensions of the sample. Resonance peaks frequencies are influenced by the mechanical damping. In this contribution we will discuss the impact of mechanical damping on the noise characteristics.

Keywords

Noise, Piezoceramics, Transducers, Mechanical Damping

Authors

MAJZNER, J.; SEDLÁKOVÁ, V.; TOFEL, P.; SEDLÁK, P.

RIV year

2007

Released

1. 1. 2007

Publisher

Ing. Zdeněk Novotný

Location

Brno

ISBN

978-80-7355-078-3

Book

New Trends in Physics

Edition number

1

Pages from

94

Pages to

97

Pages count

351

BibTex

@inproceedings{BUT25292,
  author="Jiří {Majzner} and Vlasta {Sedláková} and Pavel {Tofel} and Petr {Sedlák}",
  title="NOISE IN ULTRASONIC TRANSDUCER",
  booktitle="New Trends in Physics",
  year="2007",
  number="1",
  pages="94--97",
  publisher="Ing. Zdeněk Novotný",
  address="Brno",
  isbn="978-80-7355-078-3"
}