Naslov
Evaluating Parameters Of Pzt-5a Material Using Impedance Measurement Results

Autori
Petošić, Antonio ; Svilar, Dragoljub ; Ivančević, Bojan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
2nd Congress Of Alps-Adria Acoustics Association and Proceedings 1st Congress Of Acoustical Society Of Croatia / Jambrošić, Kristijan ; Horvat, Marko - Zagreb : Hrvatsko akustičko društvo (HAD), 2005, 265-273

Skup
2nd Congress Of Alps-Adria Acoustics Association and 1st Congress Of Acoustical Society Of Croatia

Mjesto i datum
Opatija, Hrvatska, 23.06.2005. - 24.06.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
PZT-5A ceramic samples ; electromechanical coupling factor ; complex material parameters

Sažetak
Input parameters such as electromechanical coupling factor for ultrasound transducer models based on equivalent circuits or 2D and 3D finite elements can be estimated using impedance data obtained by measurement of piezoceramic material sample as free resonator. In this work ANSI/IEEE Standard 176-1987 and Sheritt methods have been used for estimating piezoelectric parameters of PZT-5A ceramic samples, which have been made as thin discs and will be used as active elements in ultrasound transmitters. ANSI/IEEE Standard is based on equations derived for materials with low losses so material parameters are given as real numbers. Sheritt method considers material parameters as complex values and losses are given by corresponding imaginary parts. Calculated parameters are then included in theoretical free resonance model for estimating impedance near resonance frequency and compared with measured impedance data.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Elektrotehnika, Temeljne tehničke znanosti

POVEZANOST RADA