Publication detail

Measurement of Temperature Dependence in the Piezoelectric Active Element of a Knock Sensor

KLUSÁČEK, S. FIALKA, J. BENEŠ, P. HAVRÁNEK, Z. PIKULA, S.

Original Title

Measurement of Temperature Dependence in the Piezoelectric Active Element of a Knock Sensor

English Title

Measurement of Temperature Dependence in the Piezoelectric Active Element of a Knock Sensor

Type

conference paper

Language

en

Original Abstract

The article describes experimental research on PZT ceramics used in knock sensors. The aim of the paper is to investigate the temperature effects related to the parameters of piezoelectric materials and to characterize the influence and changes exerted by these parameters on the properties of knock sensors. The material properties of such elements based on PZT ceramics are significantly affected by temperature changes; we therefore examined the temperature effect during the heating phase and analysed the subsequent permanent changes to the piezoelectric coefficients. In the experiment, emphasis was placed on investigating the piezoelectric coefficient changes up to the limit value (i.e., the Curie temperature): we determined the Curie temperature of the piezoelectric material used in the knock sensor, measured the impedance and phase characteristics at the given thermal value, and cooled the material down to the ambient temperature. Subsequently, the piezoelectric constants were calculated from these characteristics, and the related influence was evaluated. The experiments demonstrated that temperature can affect the piezoelectric coefficients and thereby also to accuracy of a knock sensor or piezoelectric sensors generally.

English abstract

The article describes experimental research on PZT ceramics used in knock sensors. The aim of the paper is to investigate the temperature effects related to the parameters of piezoelectric materials and to characterize the influence and changes exerted by these parameters on the properties of knock sensors. The material properties of such elements based on PZT ceramics are significantly affected by temperature changes; we therefore examined the temperature effect during the heating phase and analysed the subsequent permanent changes to the piezoelectric coefficients. In the experiment, emphasis was placed on investigating the piezoelectric coefficient changes up to the limit value (i.e., the Curie temperature): we determined the Curie temperature of the piezoelectric material used in the knock sensor, measured the impedance and phase characteristics at the given thermal value, and cooled the material down to the ambient temperature. Subsequently, the piezoelectric constants were calculated from these characteristics, and the related influence was evaluated. The experiments demonstrated that temperature can affect the piezoelectric coefficients and thereby also to accuracy of a knock sensor or piezoelectric sensors generally.

Keywords

knock sensor; ring; Sonox P502; temperature measurement; impedance analyzer

RIV year

2014

Released

16.11.2014

Publisher

The Australian Acoustical Society

Location

Melbourne, Victoria, Austrálie

ISBN

978-0-909882-04-4

Book

Proceedings of 43rd International Congress on Noise Control Engineering

Pages from

1

Pages to

7

Pages count

7

Documents

BibTex


@inproceedings{BUT110979,
  author="Stanislav {Klusáček} and Jiří {Fialka} and Petr {Beneš} and Zdeněk {Havránek} and Stanislav {Pikula}",
  title="Measurement of Temperature Dependence in the Piezoelectric Active Element of a Knock Sensor
",
  annote="The article describes experimental research on PZT ceramics used in knock sensors. The aim of the paper is to investigate the temperature effects related to the parameters of piezoelectric materials and to characterize the influence and changes exerted by these parameters on the properties of knock sensors. The material properties of such elements based on PZT ceramics are significantly affected by temperature changes; we therefore examined the temperature effect during the heating phase and analysed the subsequent permanent changes to the piezoelectric coefficients. In the experiment, emphasis was placed on investigating the piezoelectric coefficient changes up to the limit value (i.e., the Curie temperature): we determined the Curie temperature of the piezoelectric material used in the knock sensor, measured the impedance and phase characteristics at the given thermal value, and cooled the material down to the ambient temperature. Subsequently, the piezoelectric constants were calculated from these characteristics, and the related influence was evaluated. The experiments demonstrated that temperature can affect the piezoelectric coefficients and thereby also to accuracy of a knock sensor or piezoelectric sensors generally.",
  address="The Australian Acoustical Society",
  booktitle="Proceedings of 43rd International Congress on Noise Control Engineering",
  chapter="110979",
  howpublished="electronic, physical medium",
  institution="The Australian Acoustical Society",
  year="2014",
  month="november",
  pages="1--7",
  publisher="The Australian Acoustical Society",
  type="conference paper"
}