Numerically Determining Material Coefficients of Micro-Injection Molded PVDF/PZT Piezoelectric Composites With Controlled Filler Orientation

2016 ◽  
Author(s):  
Can Yang ◽  
Xiao-Hong Yin ◽  
Shiju E ◽  
Junwu Kan ◽  
Zhonghua Zhang ◽  
...  
Keyword(s):  
Lead Zirconate Titanate ◽  
High Efficiency ◽  
Vinylidene Fluoride ◽  
Volume Fraction ◽  
Low Cost ◽  
Lead Zirconate ◽  
Elastic Stiffness ◽  
Piezoelectric Composites ◽  
Stiffness Constant ◽  
Length Reduction

In the present work, novelly structured poly(vinylidene fluoride)/lead zirconate titanate (PVDF/PZT) piezoelectric composites with controlled filler orientation were designed. The material coefficients of the proposed composites including elastic stiffness constant (C), piezoelectric constant (e) and dielectric constant (ε) were numerically determined. Specifically, the Comsol Multiphysics connected with Matlab was utilized to create the unit cells representing the piezoelectric composites. In the calculations, the whisker-shaped PZT content was varied in a relatively low range of volume fraction (i.e., 0.3∼3.5 vol.%). Furthermore, the PZT orientation and PZT length-reduction were considered in order to simulate the flow-field effect of micro-injection molding (μIM). The results showed that using a low PZT content was effective for modifying the composite’s material coefficients. In addition, the PZT orientation was identified as an important factor influencing the composite’s properties, which was believed to result from the apparently changed amount of the PZT whiskers along the direction of interest. Finally, the effect of the PZT length-reduction during μIM was found insignificant, which suggests that μIM can be safely adopted to fabricate PVDF/PZT piezoelectric composites taking full use of its advantages such as high efficiency and low cost, without worrying about PZT’s length-reduction.

scholarly journals 4D Printing of Lead Zirconate Titanate Piezoelectric Composites Transducer Based on Direct Ink Writing

2021 ◽  
Vol 8 ◽  
Author(s):  
Kai Liu ◽  
Qingqing Zhang ◽  
Chenyang Zhou ◽  
Yusheng Shi ◽  
Ce Sun ◽  
...  
Keyword(s):  
Lead Zirconate Titanate ◽  
Volume Fraction ◽  
Lead Zirconate ◽  
4D Printing ◽  
Piezoelectric Composites ◽  
Underwater Acoustic ◽  
Direct Ink Writing ◽  
Resin Impregnation ◽  
Zirconate Titanate ◽  
Acoustic Transducer

Lead zirconate titanate (PZT) piezoelectric composites used in transducers were fabricated via direct ink writing (DIW) combined with furnace sintering and resin impregnation. A ceramic slurry with a volume fraction of 52 vol% and suitable viscoelasticity was prepared. After post-process, the PZT ceramic specimens showed a nanoscale grain size with a density of 7.63 g/cm3, accounting for 97.8% of the theoretical density. The effects of different printing rod spacing on the electrical properties of composites were evaluated and lucubrated. Finally, an underwater acoustic transducer was assembled by using the PZT piezoelectric composites fabricated by the above method. The electrical signal generated by the underwater acoustic transducer changed autonomously with the acoustic stimulation, which indicated the application mode of 4D printing in functional devices in the future.

Preparation and Dielectric Properties of 1-3 La Modified PZT/IPN Piezoelectric Composites

2010 ◽  
Vol 105-106 ◽  
pp. 355-358 ◽  
Author(s):  
Z.L. Zhu ◽  
Dong Yan Tang ◽  
X.H. Zhang ◽  
Y.J. Qiao
Keyword(s):  
Heat Treatment ◽  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
Lead Zirconate Titanate ◽  
Polymer Network ◽  
Lead Zirconate ◽  
Interpenetrating Polymer Network ◽  
Ceramic Fibers ◽  
Piezoelectric Composites

To prevent the potential cracking of gel fibers, La modified lead zirconate titanate (PLZT) ceramic fibers with diameter within 50µm were achieved by embedding into PLZT powders during the heat treatment. Then the 1-3 PLZT fiber/interpenetrating polymer network (IPN) piezoelectric composites were prepared by casting the IPN precursors onto the well aligned ceramic fibers. The influences of the heating temperatures and La amounts on the dielectric constant, dielectric loss with frequencies and piezoelectric constant of PLZT were investigated in detail. The morphologies of fibers and composites were observed by biological microscope. And also, the dielectric constant of PLZT fibers and PLZT fiber/IPN piezoelectric composites were detected.

Enhanced mechanical behaviour of lead zirconate titanate piezoelectric composites incorporating zinc oxide nanowhiskers

2008 ◽  
Vol 17 (11) ◽  
pp. 4323-4327 ◽  
Author(s):  
Lin Hai-Bo ◽  
Cao Mao-Sheng ◽  
Yuan Jie ◽  
Wang Da-Wei ◽  
Zhao Quan-Liang ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Lead Zirconate Titanate ◽  
Mechanical Behaviour ◽  
Lead Zirconate ◽  
Piezoelectric Composites ◽  
Zirconate Titanate

scholarly journals Effects of loading contact on electric-power generation of lead zirconate titanate piezoelectric ceramic plate

2019 ◽  
Vol 8 (4) ◽  
pp. 509-518 ◽  
Author(s):  
Mitsuhiro Okayasu ◽  
Tsukasa Ogawa
Keyword(s):  
Power Generation ◽  
Electric Power ◽  
Lead Zirconate Titanate ◽  
Contact Area ◽  
High Efficiency ◽  
Lead Zirconate ◽  
Ceramic Plate ◽  
Electric Power Generation ◽  
Electric Voltage ◽  
Pzt Ceramic

AbstractTo better understand the generation of electric power for piezoelectric PbZrTiO3 (PZT) ceramic plate (ϕ25 mm), an attempt was made to investigate experimentally and numerically electric- power generation characteristics during cyclic bending under various loading fixtures (ϕ0–ϕ20 mm), i.e., different contact areas. Increasing the load-contact area on the PZT ceramic leads to a nonlinear decrease in the generated voltage. Decreasing contact area basically enhances the generated voltage, although the voltage saturates during loading when the contact area is less than ϕ5 mm. A similar voltage is generated for ϕ0 and ϕ5 mm, which is attributed to strain status (ratio of compressive and tensile strain) and material failure due to different stress distribution in the PZT ceramic. On the basis of the obtained electric generation voltage, suitable loading conditions are clarified by loading with the ϕ5 mm fixture, which generates a higher voltage and a longer lifetime of the PZT ceramic. From this approach, it is appeared that the area contact with the area ratio of 0.04 (ϕ5 mm/ϕ20 mm) is suitable to obtain the high efficiency of the electric voltage.

AC Poling study of lead zirconate titanate/vinylidene fluoride-trifluoroethylene composites

2005 ◽  
Vol 81 (1) ◽  
pp. 217-222 ◽  
Author(s):  
K.W. Kwok ◽  
C.K. Wong ◽  
R. Zeng ◽  
F.G. Shin
Keyword(s):  
Lead Zirconate Titanate ◽  
Vinylidene Fluoride ◽  
Lead Zirconate ◽  
Zirconate Titanate

Porosity-Graded Piezoelectric Ceramics: Processing and Electric-Induced Displacement

2005 ◽  
Vol 475-479 ◽  
pp. 1567-1570 ◽  
Author(s):  
Jing Feng Li ◽  
Hai Long Zhang ◽  
Kenta Takagi ◽  
Ryuzo Watanabe
Keyword(s):  
Lead Zirconate Titanate ◽  
Volume Fraction ◽  
Piezoelectric Ceramics ◽  
Lead Zirconate ◽  
Strain Gages ◽  
Pzt Ceramics ◽  
Air Atmosphere ◽  
Laminate Theory ◽  
Powder Compacts ◽  
Porous Pzt

Uniformly porous and porosity-graded piezoelectric ceramics were prepared by sintering powder compacts consisting of lead zirconate titanate (PZT) and organic material powders as pore-forming agents (PFA) in air atmosphere. The dielectric, elastic and piezoelectric properties of uniformly porous PZT ceramics were investigated as a function of the porosity volume fraction. The electric-field-induced deflection characteristics of the beam-shaped actuator samples were measured with electric strain gages, and compared with the values calculated from the modified classical laminate theory using the elastic and piezoelectric constants of the non-FGM porous PZT ceramics.

Measurements of Piezoelectric Constant D33 of Lead Zirconate Titanate (PZT) Through Use of a Mini Impact Hammer

2009 ◽  
Author(s):  
Qing Guo ◽  
G. Z. Cao ◽  
I. Y. Shen
Keyword(s):  
Thin Films ◽  
Boundary Conditions ◽  
Lead Zirconate Titanate ◽  
Low Cost ◽  
Lead Zirconate ◽  
Piezoelectric Constant ◽  
Impulsive Force ◽  
Sensors And Actuators ◽  
Aspect Ratios ◽  
Zirconate Titanate

Lead Zirconate Titanate Oxide (PbZrxTi1−xO3 or PZT) is a piezoelectric material widely used as sensors and actuators. For microactuators, PZT often appears in the form of thin films to maintain proper aspect ratios. This paper is to present a simple and low-cost method to measure piezoelectric constant d33 of PZT thin films, which is a major challenge encountered in the actuator development. We use an impact hammer with a sharp tip to generate an impulsive force that acts on the PZT film. The impulsive force and the responding voltage are then measured to calculate the piezoelectric constant d33. The impulsive force has large enough amplitude so that a good signal-to-noise ratio can be maintained. Furthermore, the impulsive force has extremely short duration, so the discharge effect (i.e., the time constant effect) of the PZT circuit can be ignored. Preliminary testing on bulk PZT through this new method leads to two conclusions. Firstly, boundary conditions of the specimen are critical. In particular, the specimen must be securely fastened. Since the impulsive load only acts on a tiny area, loose boundary conditions can introduce spurious results from other piezoelectric constant d31. Secondly, size of the specimen is critical. Specimen of smaller size leads to more accurate measurements of the piezoelectric constant d33.

scholarly journals Dielectric properties of composite based on ferroelectric copolymer of poly(vinylidene fluoride-trifluoroethylene) and ferroelectric ceramics of barium lead zirconate titanate

2017 ◽  
Vol 07 (05) ◽  
pp. 1720003
Author(s):  
A. V. Solnyshkin ◽  
I. L. Kislova ◽  
I. M. Morsakov ◽  
A. N. Belov ◽  
V. I. Shevyakov ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Lead Zirconate Titanate ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
Lead Zirconate ◽  
Ferroelectric Ceramics ◽  
Zirconate Titanate ◽  
Solvent Cast ◽  
Poly Vinylidene Fluoride ◽  
Frequency Dependences

A study of dielectric properties of composite films on the base of poly(vinylidene fluoride-trifluoroethylene) copolymer P(VDF-TrFE) and ferroelectric ceramics of barium lead zirconate titanate (BPZT) solid solution is presented in this work. The composite films containing up to 50 vol.% of BPZT grains with size [Formula: see text]1[Formula: see text][Formula: see text]m were prepared by the solvent cast method. Frequency dependences of real and imaginary components of the complex permittivity were determined. The concentration dependence of the dielectric constant was discussed.

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