Electromechanical response of multilayer piezoelectric actuators for fuel injectors at high temperatures

被引：8
|
作者：
Narita, Fumio [1 ]
Hasegawa, Ryohei [1 ]
Shindo, Yasuhide [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 9808579, Japan
来源：
JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 18期
基金：
日本学术振兴会;
关键词：
12;
D O I：
10.1063/1.4875487
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This paper studies the electromechanical response of multilayer piezoelectric actuators from room to high temperatures for fuel injector applications. A phenomenological model of depolarization at high temperatures was proposed, and the temperature dependent piezoelectric coefficients were obtained. The nonlinear electromechanical fields of the multilayer piezoelectric actuators due to the depolarization at high temperatures were then calculated by the finite element method. In addition, experimental results on the electric field induced strain at high temperatures were presented to validate the predictions. (C) 2014 AIP Publishing LLC.
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页数：5
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