Wischke M.,UniversityofFreiburg IMTEK |
Haller D.,UniversityofFreiburg IMTEK |
Goldschmidtboeing F.,UniversityofFreiburg IMTEK |
Woias P.,UniversityofFreiburg IMTEK
Smart Materials and Structures | Year: 2010
For high electrical loads, the electromechanical characteristics of PZT actuators are impacted by nonlinearities. This work presents a procedure, derived from nonlinear analysis, to assess separately the electrostriction and the elastostriction parameters of bulk PZT ceramics. A detailed investigation has shown that the electrostriction is dominant in actuator applications, while the elastostriction affects sensor applications. Further, the relationship between electrostriction and polarization in PZT material is discussed. © 2010 IOP Publishing Ltd.