Effect of kerf filler on the electromechanical coupling coefficient of 1-3 piezoelectric composites

被引：17

作者：

Wang, Chunying ^{[1
]}

Liu, Yingchun ^{[1
]}

Zhang, Rui ^{[1
]}

Cao, Wenwu ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Harbin 150080, Heilongjiang, Peoples R China

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 651卷

关键词：

1-3 piezoelectric composites; Electromechanical coupling factor; Kerf filler;

D O I：

10.1016/j.jallcom.2015.08.122

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A unified formula has been derived to quantitatively describe the electromechanical coupling factor for the thickness mode of 1-3 piezoelectric composites with rectangular rod. The effect of different kerf filler on the electromechanical coupling factor is analyzed by varying the aspect ratio of piezoelectric rod and the elastic stiffness of kerf filler, respectively. The results show that the coupling factor decreases with the elastic stiffness increase of the kerf filler. In addition, we have also compared the current rectangular rod model with previous cylinder model for 1-3 piezoelectric composites. It was found that the circular cross-section piezoelectric rod tends to provide higher electromechanical coupling factor than the square rod when the aspect ratio is between 0.3 and 4 in the 1-3 composites with the same volume fraction. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：643 / 647

页数：5