[1] Chen Fanxiu, Cong Yuqi, Lin Baoping, et al. New method for measuring high field electrostrictive responseof barium titanate/polyurethane elastomer [J]. Journal of Southeast University (English Edition), 2006, 22 (1): 88-92. [doi:10.3969/j.issn.1003-7985.2006.01.019]

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New method for measuring high field electrostrictive responseof barium titanate/polyurethane elastomer()

一种测量钛酸钡/聚氨酯材料电致伸缩性能的新方法

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

22

Issue:

2006 1

Page:

88-92

Research Field:

Mathematics, Physics, Mechanics

Publishing date:

2006-03-20

Info

Title:

New method for measuring high field electrostrictive responseof barium titanate/polyurethane elastomer

一种测量钛酸钡/聚氨酯材料电致伸缩性能的新方法

Author(s):

Chen Fanxiu^{1, 2}, Cong Yuqi³, Lin Baoping³, Li Jianqing⁴, He Xiaoyuan^{1, 2}

¹Department of Engineering Mechanics, College of Civil Engineering, Southeast University, Nanjing 210096, China
²Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing 210096, China
³Departm

陈凡秀^{1, 2}, 丛羽奇³, 林保平³, 李建清⁴, 何小元^{1, 2}

¹东南大学土木工程学院工程力学系, 南京 210096; ²东南大学MEMS教育部重点实验室, 南京 210096; ³东南大学化学化工系, 南京 210096; ⁴东南大学仪器科学与工程系, 南京 210096

Keywords:

digital speckle correlation method;  electrostrictive response;  barium titanate/polyurethane elastomer composite material;  electrostrictive strain

数字散斑相关方法;  电致伸缩效应;  钛酸钡/聚氨酯材料;  电致伸缩应变

PACS:

O348

DOI:

10.3969/j.issn.1003-7985.2006.01.019

Abstract:

A new method for measuring the characteristic of electrostriction by a digital speckle correlation method(DSCM)is presented. The in-plane displacement is obtained by using the DSCM, and the out-plane displacement is obtained by the geometrical relation of the triangle theory. In this application, high field electrostrictive strains of barium titanate/polyurethane elastomer composite materials are measured. The electrostrictive strain is evaluated when the application of an electric field is repeated, and then the electrostrictive coefficient of the sample is obtained. To improve the measuring accuracy, the bilinear interpolation of gray value is used to obtain the sub-pixel gray value. The results are compared with those obtained from the surface fitting algorithm. The experimental results demonstrate that the electrostrictive response of polyurethane increases with the introduction of barium titanate into polyurethane. And by using the DSCM, the measurement of the characteristic of electrostriction can be done quickly and accurately. The DSCM provides an effective tool for the evaluation of electrostrictive response.

提出利用数字散斑相关方法测量材料的电致伸缩性能的新方法.通过数字散斑相关方法得到面内位移, 从而由几何三角关系得到离面位移, 实现电致伸缩应变的测量.采用该方法对高电场作用下钛酸钡/聚氨酯复合高分子材料的电致伸缩性能进行了测量.在高电场作用下, 对重复加电放电过程进行分析, 得到电致伸缩应变, 从而获取材料的电致伸缩系数.实验中采用双线性插值方法获取亚象素灰度值, 以提高测量精度, 并将结果与曲面拟合算法的计算结果进行了比较.结果表明:钛酸钡的加入提高了聚氨酯材料的电致伸缩性能;数字散斑相关方法可以有效地实现材料的电致伸缩系数的测量.该方法为电致伸缩性能的研究提供了一种有效的工具.

References:

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Memo

Memo:

Biographies: Chen Fanxiu(1979—), female, graduate;He Xiaoyuan(corresponding author), male, doctor, professor, mmhxy@seu.edu.cn.

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