Dittmer, Robert ; Webber, Kyle G. ; Aulbach, Emil ; Jo, Wook ; Tan, Xiaoli ; Rödel, Jürgen (2013)
Optimal working regime of lead–zirconate–titanate for actuation applications.
In: Sensors and Actuators A: Physical, 189
doi: 10.1016/j.sna.2012.09.015
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The large-signal unipolar behavior of PZT is characterized under combined electrical, thermal, and mechanical loading. Maximum strain Smax and polarization Pmax feature a pronounced sensitivity on stress with a field-dependent peak evolving at around −50 MPa that is associated with enhanced non-180° domain switching. As notable strains are achieved in excess of the quasi-statically measured blocking stress, it is suggested that the testing procedure presented within this work is suited to supplement blocking force measurements in order to comprehensively evaluate the electromechanical performance of a piezoceramic. With the suppression of non-180° domain switching at high stress levels, Smax(σ) decreases at a faster rate than Pmax(σ). Accordingly, the electrostrictive coefficient Q11 is shown to be stress-dependent. This observation is rationalized with the stress-dependent change of domain processes. It is furthermore found that Q11 features a notable dependence on temperature, increasing from 0.018 m4 C−2 at 25 °C to 0.028 m4 C−2 at 150 °C under zero-stress. To assess the actuatoric efficiency, a novel figure of merit η* is defined to quantify the fraction of input energy utilized for mechanical work.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Dittmer, Robert ; Webber, Kyle G. ; Aulbach, Emil ; Jo, Wook ; Tan, Xiaoli ; Rödel, Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Optimal working regime of lead–zirconate–titanate for actuation applications |
| Sprache: | Englisch |
| Publikationsjahr: | 15 Januar 2013 |
| Verlag: | Elsevier Science Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Sensors and Actuators A: Physical |
| Jahrgang/Volume einer Zeitschrift: | 189 |
| DOI: | 10.1016/j.sna.2012.09.015 |
| Kurzbeschreibung (Abstract): | The large-signal unipolar behavior of PZT is characterized under combined electrical, thermal, and mechanical loading. Maximum strain Smax and polarization Pmax feature a pronounced sensitivity on stress with a field-dependent peak evolving at around −50 MPa that is associated with enhanced non-180° domain switching. As notable strains are achieved in excess of the quasi-statically measured blocking stress, it is suggested that the testing procedure presented within this work is suited to supplement blocking force measurements in order to comprehensively evaluate the electromechanical performance of a piezoceramic. With the suppression of non-180° domain switching at high stress levels, Smax(σ) decreases at a faster rate than Pmax(σ). Accordingly, the electrostrictive coefficient Q11 is shown to be stress-dependent. This observation is rationalized with the stress-dependent change of domain processes. It is furthermore found that Q11 features a notable dependence on temperature, increasing from 0.018 m4 C−2 at 25 °C to 0.028 m4 C−2 at 150 °C under zero-stress. To assess the actuatoric efficiency, a novel figure of merit η* is defined to quantify the fraction of input energy utilized for mechanical work. |
| Freie Schlagworte: | Lead–zirconate–titanate; PZT; Stress dependence; Working regime; Temperature dependence; Actuator; Electrostriction; Polarization losses; Efficiency |
| Zusätzliche Informationen: | SFB 595 A1 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Elektromechanik von Oxiden 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe Zentrale Einrichtungen DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 595: Elektrische Ermüdung > A - Synthese > Teilprojekt A1: Herstellung keramischer, texturierter Akuatoren mit hoher Dehnung DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) |
| Hinterlegungsdatum: | 27 Nov 2012 10:41 |
| Letzte Änderung: | 27 Feb 2014 14:44 |
| PPN: | |
| Sponsoren: | This work was financially supported by the Deutsche Forschungsgemeinschaft DFG under SFB595/A1. |
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