Effective Electromechanical Coupling for the Partially
Electroded Ceramic Resonators of Different Geometries

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Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different ...

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D 2015

Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different Geometries

ERHART, Jiří a Tutu SEBASTIAN

Základní údaje

Originální název

Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different Geometries

Autoři

ERHART, Jiří (203 Česká republika, garant, domácí) a Tutu SEBASTIAN (356 Indie)

Vydání

Galati, THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE, od s. 7-16, 10 s. 2015

Nakladatel

University of Galati

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

Fyzika pevných látek a magnetismus

Stát vydavatele

Rumunsko

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Kód RIV

RIV/46747885:24510/15:#0001262

Organizace

Fakulta přírodovědně-humanitní a pedagogická – Technická univerzita v Liberci – Repozitář

ISSN

Klíčová slova anglicky

piezoelectric ceramics; PZT; resonator; vibration modes; electromechanical coupling factor

Změněno: 5. 4. 2016 09:14, Jiří Erhart

Anotace

V originále

Effective electromechanical coupling factor (ECF) was studied on bar, disc and ring ceramic resonators partially covered by the electrodes. ECF’s were calculated theoretically and verified experimentally. Bar resonators (k31-mode) show maximum value of ECF keff = 0.26 at the electrode aspect ratio equal 0.75 with calculated values fitting the experimental data for all aspect ratios. Calculations for bar resonators with embedded electrodes (k33-mode) show similar behavior like for k31-mode, but at higher ECF’s. Maximum value of ECF for such mode reaches keff = 0.67 for the electrode aspect ratio 0.75. Partially electroded disc resonators (kp-mode) are well described analytically by one-dimensional model only for the electrode aspect ratios up to 0.5. Maximum value keff = 0.58 for disc resonators was measured at the electrode aspect ratio equal 0.80. Partially electroded ring resonators (kp-mode) show the same trend as discs without saturation of ECF values. Maximum ECF keff = 0.34 was measured for ring resonators with full electrode. Presented analytical formulae may serve as a guide for the optimum electrode pattern design for the partially electroded resonators.

Citovat

ERHART, Jiří a Tutu SEBASTIAN. Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different Geometries. Online. In Marian BORDEI. THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE. Galati: University of Galati, 2015, s. 7-16. ISSN 1453-083X.

@inproceedings{20599,
   author = {Erhart, Jiří and Sebastian, Tutu},
   address = {Galati},
   booktitle = {THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE},
   editor = {Marian BORDEI},
   keywords = {piezoelectric ceramics; PZT; resonator; vibration modes; electromechanical coupling factor},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Galati},
   pages = {7-16},
   publisher = {University of Galati},
   title = {Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different Geometries},
   year = {2015}
}

TY  - CONF
ID  - 20599
AU  - Erhart, Jiří - Sebastian, Tutu
PY  - 2015
TI  - Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different Geometries
PB  - University of Galati
CY  - Galati
KW  - piezoelectric ceramics
KW  - PZT
KW  - resonator
KW  - vibration modes
KW  - electromechanical coupling factor
N2  - Effective electromechanical coupling factor (ECF) was studied on bar, disc and ring ceramic resonators partially covered by the electrodes. ECF’s were calculated theoretically and verified experimentally. Bar resonators (k31-mode) show maximum value of ECF keff = 0.26 at the electrode aspect ratio equal 0.75 with calculated values fitting the experimental data for all aspect ratios. Calculations for bar resonators with embedded electrodes (k33-mode) show similar behavior like for k31-mode, but at higher ECF’s. Maximum value of ECF for such mode reaches keff = 0.67 for the electrode aspect ratio 0.75. Partially electroded disc resonators (kp-mode) are well described analytically by one-dimensional model only for the electrode aspect ratios up to 0.5. Maximum value keff = 0.58 for disc resonators was measured at the electrode aspect ratio equal 0.80. Partially electroded ring resonators (kp-mode) show the same trend as discs without saturation of ECF values. Maximum ECF keff = 0.34 was measured for ring resonators with full electrode. Presented analytical formulae may serve as a guide for the optimum electrode pattern design for the partially electroded resonators.
ER  -

ERHART, Jiří a Tutu SEBASTIAN. Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different Geometries. Online. In Marian BORDEI. \textit{THE ANNALS OF “DUNAREA DE JOS” UNIVERSITY OF GALATI. FASCICLE IX. METALLURGY AND MATERIALS SCIENCE}. Galati: University of Galati, 2015, s.~7-16. ISSN~1453-083X.