Piezoelectric polymers have lossy and dispersive dielectric properties and exhibit higher viscoelastic losses. Due to their lossy behavior, the lossy models developed for piezoceramics are insufficient for evaluating polymers. In this work we present a novel SPICE implementation of piezoelectric polymers model which includes the mechanical, electromechanical and dielectric losses. The mechanical/viscoelastic, dielectric/electrical and piezoelectric/electromechanical losses have been included in the model by using complex elastic, dielectric and piezoelectric constants – obtained from measured impedance of PVDF-TrFE sample. The simulated impedance and phase plots of polymer, working in thickness mode, have been compared with measured data. The impedance and phase plots have also been compared with those obtained by using the lossy model approaches reported earlier.

Modeling of lossy piezoelectric polymers in SPICE

Dahiya, Ravinder Singh;Lorenzelli, Leandro
2008

Abstract

Piezoelectric polymers have lossy and dispersive dielectric properties and exhibit higher viscoelastic losses. Due to their lossy behavior, the lossy models developed for piezoceramics are insufficient for evaluating polymers. In this work we present a novel SPICE implementation of piezoelectric polymers model which includes the mechanical, electromechanical and dielectric losses. The mechanical/viscoelastic, dielectric/electrical and piezoelectric/electromechanical losses have been included in the model by using complex elastic, dielectric and piezoelectric constants – obtained from measured impedance of PVDF-TrFE sample. The simulated impedance and phase plots of polymer, working in thickness mode, have been compared with measured data. The impedance and phase plots have also been compared with those obtained by using the lossy model approaches reported earlier.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11582/17969
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
social impact