Experimental study of the electro-mechanical switching behavior of a piezoelectric stack actuator

被引:1
作者
York, Alexander [1 ]
Seelecke, Stefan [1 ]
机构
[1] N Carolina State Univ, Dept Mech & Aero Engn, Raleigh, NC 27695 USA
来源
BEHAVIOR AND MECHANICS OF MULTIFUNCTIONAL AND COMPOSITE MATERIALS 2008 | 2008年 / 6929卷
关键词
PZT; hysteresis; experimental data; rate-dependence; piezoceramic actuators;
D O I
10.1117/12.776165
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The rate-dependence of piezoelectric materials resulting from the kinetics of domain switching is an important factor that needs to be included in realistic modeling attempts. This paper provides a systematic study of the rate-dependent hysteresis behavior of a commercially available PZT stack actuator. The stack actuator is coupled to a flexure system which provides mechanical loading via a spring. Experiments covering full as well as minor loops are conducted at different loading rates with polarization and strain recorded. In addition, the creep behavior at different constant levels of the electric field is observed. These experiments provide evidence of kinetics being characterized by strongly varying relaxation times that can be associated with different switching mechanisms.
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页数:10
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