Temperature measurements by means of the electrical impedance of piezoceramics

Author

Ilg, Jürgen ; Rupitsch, Stefan J. ; Lerch, Reinhard

Author_Institution

Friedrich-Alexander-Univ. Erlangen-Nuremberg, Erlangen, Germany

fYear

2012

fDate

13-16 May 2012

Firstpage

1851

Lastpage

1855

Abstract

This contribution deals with the temperature dependence of the electrical impedance of piezoceramic transducers. The behavior under thermal loads is investigated for bulk ceramics and composite structures where the piezoceramics are integrated into passive materials. According to this identified dependencies, temperature measurements by means of the piezoceramics impedance is realized using a polynomial fitting method. The accuracy of the measurements is investigated for different temperature profiles. The presented method can be utilized for additionally measuring temperature in devices with integrated piezoceramic transducers, especially in health monitoring applications.

Keywords

electric impedance; piezoceramics; piezoelectric transducers; polynomial approximation; temperature measurement; bulk ceramics; composite structures; electrical impedance; health monitoring application; piezoceramic transducer; piezoceramics impedance; polynomial fitting method; temperature measurement; Ceramics; Impedance; Impedance measurement; Piezoelectric materials; Temperature measurement; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International

Conference_Location

Graz

ISSN

1091-5281

Print_ISBN

978-1-4577-1773-4

Type

conf

DOI

10.1109/I2MTC.2012.6229130

Filename

6229130