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piezoelectric strain coefficient
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  压电应变系数
     The results showed that piezoelectric strain coefficient d 33 and dielectric constant ε of composites were lower,and that at low frequency,due to interlayer loss caused by interface polarization,dielectric loss tg δ was a higher value.
     实验结果表明,串联2-2型复合材料的压电应变系数d33及介电常数ε均较小; 在低频,由于界面极化引起的夹层损耗,其介电损耗tgδ则较大。
短句来源
     The piezoelectric strain coefficient and the dielectric constant of PVDF films increased, and the dielectric loss decreased with the increasing of the polarization field.
     随着极化电场的升高,PVDF压电薄膜的压电应变系数升高,介电常数升高,介电损耗降低.
  相似匹配句对
     The strain of B.N.
     N .
短句来源
     Nonlinear Electro-Strain Effect of Piezoelectric Ceramics
     压电陶瓷的非线性电应变效应
短句来源
     Piezoelectric Induced Strain Actuator and Its Application in Structures
     压电固体作动筒及其在结构中的应用
短句来源
     Piezoelectric Immunosensors
     压电免疫传感器
短句来源
     1565 strain.
     1565菌株进行诱变处理,选育到一株性能较优良的突变株。
短句来源
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  piezoelectric strain coefficient
By increasing the orientation angle of the ceramic phase, the dielectric constant and the piezoelectric strain coefficient of both types of composites decreased.
      
Then, the elastic coefficient s33,fibreE, relative permittivity ε33,fibreT and piezoelectric strain coefficient d33,fibre of the ceramic fibre could be found.
      
The piezoelectric strain coefficient d13 of stretched and unstretched acrylonitrile/methylacrylate copolymer films has been investigated as a function of poling conditions.
      
The piezoelectric strain coefficient may also be improved by a domain poling process step.
      
An equivalent piezoelectric strain coefficient is determined by comparing experimental and numerical results.
      


Because piezoelectric material has electromechanical effect of coupling,it has been applied to many important technical fields. It may be applied to the induction and control of integral intelligent structure system. After piezoelectric material is utilized, it may easily be applied to accurate monitor measurement of flexible structure, then the structure can be controlled effectively. Because there are piezoelectric material in structure, the research for integral structure became more complex...

Because piezoelectric material has electromechanical effect of coupling,it has been applied to many important technical fields. It may be applied to the induction and control of integral intelligent structure system. After piezoelectric material is utilized, it may easily be applied to accurate monitor measurement of flexible structure, then the structure can be controlled effectively. Because there are piezoelectric material in structure, the research for integral structure became more complex and difficult. Wang and Roger studied equivalent action of piezoelectric piece on lamination plate, and gave location function of the strain which is generated by piezoelectric effect. It is simple and direct in research for piezoelectric structure, and it maybe applied to deformation and control of plate. In this paper, by the action of axial compression and voltage, the buckling of elastic annular plate with many piezoelectric lamellas is studied. Hypotheses about piezoelectric lamellas are as follows. a) Piezoelectric lamellas are glued on the surface of the plate firmly, and the influence of glue is not considered. b) All piezoelectric lamellas are of same transverse isotropic material and thickness. The piezoelectric strain coefficients are d 31 =d 32 , d 36 =0. c) The direction of polarization and the face of the plate are in right angle,and only the electric field intensity in the direction of polarization is considered. d) The stiffness of piezoelectric material makes no contribution to integral stiffness of structure. e) We only consider inverse piezoelectric effect of actuating components to the plate, and do not consider piezoelectric effect of deformations to the actuating components. The characteristic eqution of buckling on the annular plate is obtained by using the equivalent action of piezoelectric effect, initial parameters method and transitive matrix method. The buckling loads are calculated for piezoelectric lamellas with any width that are placed anywhere in the annular plate. The curve of the width of piezoelectric piece versus buckling load with the inner radius of piezoelectric piece fixed, the curve of the inner radius of piezoelectric piece versus buckling load with the outer radius of piezoelectric piece fixed,and the stable boundary curves are obtained.

对在不同位置粘有任意多对压电片的弹性环形板在电压和径向压力作用下的轴对称屈曲进行了研究.根据压电效应的等效作用量,初参数法以及传递矩阵方法得到了环板屈曲的特征方程.对不同位置及不同宽度的压电片,计算了结构的屈曲载荷.并得到了稳定性边界曲线.

In the paper,the samples of 2 2 piezocomposites with series model were prepared from PZT and PVDF by hot pressed method.The dielectric and piezoelectric properties of samples were measured.The results showed that piezoelectric strain coefficient d 33 and dielectric constant ε of composites were lower,and that at low frequency,due to interlayer loss caused by interface polarization,dielectric loss tg δ was a higher...

In the paper,the samples of 2 2 piezocomposites with series model were prepared from PZT and PVDF by hot pressed method.The dielectric and piezoelectric properties of samples were measured.The results showed that piezoelectric strain coefficient d 33 and dielectric constant ε of composites were lower,and that at low frequency,due to interlayer loss caused by interface polarization,dielectric loss tg δ was a higher value.

以PZT为陶瓷相,以聚偏二氟乙烯(PVDF)为聚合物相,采用热压法制备了串联2-2型样品。测试了串联2-2型压电复合材料的介电、压电性能。实验结果表明,串联2-2型复合材料的压电应变系数d33及介电常数ε均较小;在低频,由于界面极化引起的夹层损耗,其介电损耗tgδ则较大。

The resistivities, pyro electri c coefficients, dielectric constants and piezoelectric strain coefficients of Rb TiOAsO 4(RTA)Crystal have been measured for the first time.

测量了RbTiOAsO4 晶体的电阻率、介电常数、热释电系数和压电应变系数。关键词 RbTiOAsO4 晶体;介电常数;热释电系数;压电应变系数

 
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