Numerical Modeling of PZT- Piezoelectric Composites with Passive and Active Polymer Matrix

2019 ◽  
Vol 821 ◽  
pp. 445-451
Author(s):  
Oboso P. Benard ◽  
Nagih M. Shaalan ◽  
Nakamura Koichi ◽  
Atef E. Mahmoud ◽  
Mohsen A. Hassan
Keyword(s):  
Polymer Matrix ◽  
Volume Fraction ◽  
Homogenization Method ◽  
Piezoelectric Composite ◽  
Electromechanical Properties ◽  
Piezoelectric Composites ◽  
Voltage Coefficient ◽  
Constituent Material ◽  
Piezoelectric Polymer ◽  
Composite Properties

Piezoelectric composite materials with a polymer matrix are important for underwater acoustic and biomedical imaging applications. The dependence of electromechanical properties of piezoelectric composite on constituent material characteristics and shape of piezoelectric inclusions is a central problem that provides the opportunity to tailor the performance of piezoelectric composites according to design needs. A numerical model has been developed to investigate the electromechanical properties of 1-3 piezoelectric composites with a passive and active polymer matrix. Maxwell Homogenization method is employed to homogenize the solution domain. It is demonstrated that the use of PVDF as an active polymer matrix has a significant influence on piezoelectric charge coefficient d31, hydrostatic coefficient dh, voltage coefficient gh, and hydrophone figure of merit ghdh when compared to the passive Araldite-D polymer matrix. Overall, a 5 to 30% volume fraction of PZT-7A fiber inclusions in an active polymer matrix is the optimum ratio that has a significant effect on piezoelectric properties. The accuracy and effectiveness of homogenized material constants were verified by comparing the derived composite properties with experimental work published elsewhere. These results provide much needed intuitiveness in the development of piezoelectric polymer composite with better performance for transducer applications.

Fabrication and Properties of 1-3 Polymer Modified Cement Based Piezoelectric Composites

2011 ◽  
Vol 306-307 ◽  
pp. 305-308 ◽  
Author(s):  
Li Li Guo ◽  
Mi Mi Li ◽  
Min Sun ◽  
Dong Yu Xu ◽  
Shi Feng Huang
Keyword(s):  
Quality Factor ◽  
Acoustic Impedance ◽  
Piezoelectric Ceramic ◽  
Volume Fraction ◽  
Piezoelectric Composite ◽  
Electromechanical Properties ◽  
Piezoelectric Composites ◽  
Lithium Zirconate ◽  
Non Destructive ◽  
Thickness Mode

A piezoelectric ceramic(lead niobium lithium zirconate titanate, P(LN)ZT), sulphoaluminate cement and polymer were used to fabricate polymer modified cement based piezoelectric composites by cut-filling technique. The influence of P(LN)ZT volume fraction on the electromechanical properties and acoustic impedance of composite was investigated. Comparing with P(LN)ZT Piezoelectric ceramic, the vibration at thickness mode of 1-3 type piezoelectric composite is strengthened, and the electromechanical quality factor is reduced. When P(LN)ZT volume fraction is 30.86%, the acoustic impedance value is 8.24 M rayl, which is close to that of the concrete (9.0 M rayl), and this is suitable for the non destructive inspection.

scholarly journals Investigation of Electromechanical Properties on 3-D Printed Piezoelectric Composite Scaffold Structures

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 5927
Author(s):  
Tutu Sebastian ◽  
Miriam Bach ◽  
Andreas Geiger ◽  
Tony Lusiola ◽  
Lucjan Kozielski ◽  
...  
Keyword(s):  
Fused Deposition Modeling ◽  
Composite Scaffold ◽  
Piezoelectric Composite ◽  
Electromechanical Properties ◽  
Destructive Testing ◽  
Fused Filament Fabrication ◽  
Pore Former ◽  
Piezoelectric Composites ◽  
Fused Deposition ◽  
Acoustic Transducer

Piezoelectric composites with 3-3 connectivity gathered attraction due to their potential application as an acoustic transducer in medical imaging, non-destructive testing, etc. In this contribution, piezoelectric composites were fabricated with a material extrusion-based additive manufacturing process (MEX), also well-known under the names fused deposition modeling (FDM), fused filament fabrication (FFF) or fused deposition ceramics (FDC). Thermoplastic filaments were used to achieve open and offset printed piezoelectric scaffold structures. Both scaffold structures were printed, debinded and sintered successfully using commercial PZT and BaTiO3 powder. For the first time, it could be demonstrated, that using the MEX processing method, closed pore ferroelectric structure can be achieved without pore-former additive. After ceramic processing, the PZT scaffold structures were impregnated with epoxy resin to convert them into composites with 3-3 connectivity. A series of composites with varying ceramic content were achieved by changing the infill parameter during the 3D printing process systematically, and their electromechanical properties were investigated using the electromechanical aix PES device. Also, the Figure of merit (FOM) of these composites was calculated to assess the potential of this material as a candidate for transducer applications. A maximum for the FOM at 25 vol.% of PZT could be observed in this study.

scholarly journals Computational Homogenization of Cement-Based Porous Piezoelectric Composites with Random Structure

2019 ◽  
Vol 69 (2) ◽  
pp. 77-88
Author(s):  
Novák Pavol ◽  
Bishay Peter ◽  
Žmindák Milan
Keyword(s):  
Volume Fraction ◽  
Particle Volume Fraction ◽  
Ceramic Composites ◽  
Cement Matrix ◽  
Random Structure ◽  
The Finite Element Method ◽  
Particle Volume ◽  
Piezoelectric Composites ◽  
Pore Volume Fraction ◽  
Composite Properties

AbstractThe finite element method (FEM) is used to characterize the effective thermo-electromechanical material properties of cement-based piezoelectric ceramic composites in this paper. The micromechanics representative volume element (RVE) approach is used with distribution of piezoelectric particles in the porous cement matrix. The effects of the piezoelectric particle volume fraction and pore volume fraction on the effective composite properties are determined using sets of different boundary conditions. Microscale homogenization is carried out through the analysis of particles which are randomly distributed in a homogenized matrix.

Modeling and Analysis of 1-3 Piezoelectric Composites

2002 ◽  
Author(s):  
Sanjay Nakhwa ◽  
Anil Saigal
Keyword(s):  
Boundary Conditions ◽  
Material Properties ◽  
Volume Fraction ◽  
Transversely Isotropic ◽  
Unit Cell ◽  
Coupling Constants ◽  
Upper And Lower Bounds ◽  
Piezoelectric Composite ◽  
Piezoelectric Composites ◽  
Material Constants

Theoretical results of the material properties of piezoelectric composites are generally limited to the transversely isotropic composites and are usually given in the form of upper and lower bounds. In most of these analyses all the material constants cannot be determined. However, the method of effective field has been used on a transversely isotropic piezoelectric composite to theoretically calculate all the ten material properties. In this work an alternative method to determine all the elastic, dielectric and piezoelectric coupling constants of 1-3 piezoelectric composite with periodic arrangement of fibers are investigated by using finite element analysis on a unit cell model. FEA of unit cell models for hexagonal, square with diagonal and square with edge orientation topologies are performed. Different mechanical and electrical loading patterns and their corresponding boundary conditions are formulated and simulated to get data necessary for deriving the various anisotropic material constants. FEA results are compared with those of the theoretical work. Effect of different parameters e.g. volume fraction, topology and electrical boundary conditions on the different material constants are discussed.

Performance Analysis of the 1-3 Piezoelectric Composites and Transducer Fabrication

2011 ◽  
Vol 687 ◽  
pp. 339-342 ◽  
Author(s):  
Min Sun ◽  
Dong Yu Xu ◽  
Shi Feng Huang
Keyword(s):  
Resonant Frequency ◽  
Volume Fraction ◽  
Relative Dielectric Constant ◽  
Piezoelectric Composite ◽  
Piezoelectric Composites ◽  
Figures Of Merit ◽  
The Matrix ◽  
Filling Method ◽  
Piezoelectric Strain ◽  
Piezoelectric Voltage

1-3 polymer-based piezoelectric composites were fabricated using epoxy as the matrix by the cut-filling method. The influences of PMN volume fraction on the piezoelectric and dielectric properties of the composite were analyzed, and then the piezoelectric composite was fabricated to transducer whose properties were also analyzed. The results indicate that with increasing the PMN volume fraction, both the hydrostatic piezoelectric voltage gh and hydrostatic figures of merit dh·gh of the composite decrease, while the relative dielectric constant εr increases. The hydrostatic piezoelectric strain dh has the optimum value in the PMN volume fraction range of 40%-60%. The resonant frequency of transducer in water is 306.5 kHz and anti-resonant frequency is 352.6 kHz.

A Percolation Based Micromechnical Constitutive Model for Flexible Piezoelectric Paint

2008 ◽  
Author(s):  
Xin Li ◽  
Yunfeng Zhang
Keyword(s):  
Percolation Theory ◽  
Piezoelectric Ceramic ◽  
Volume Fraction ◽  
Particle Volume Fraction ◽  
Piezoelectric Composite ◽  
Sensing Element ◽  
Electromechanical Properties ◽  
Particle Volume ◽  
Micromechanics Model ◽  
Piezoelectric Activity

A percolation theory based micromechanics model is proposed in this paper to describe the elastoelectric properties of flexible piezoelectric paint. Piezoelectric paint consists of tiny piezoelectric ceramic particles randomly dispersed in a polymer matrix and therefore belongs to the “0–3” piezoelectric composite. Because of its ease of application, piezoelectric paint can be readily fabricated into sensing element with complex patterns. To guide the sensor design, a micromechanics model for describing the electromechanical properties of piezoelectric paint is proposed. The focus of this research is given to piezoelectric paint with a piezoelectric ceramic volume fraction ranging from 35% to 65%, for which some of the active particles form 1–3 connectivity, leading to higher piezoelectric activity than previous models for piezoelectric 0–3 composites predict. Percolation theory is used to model the quick increase of piezoelectric activity after a threshold level of piezoelectric ceramic particle volume fraction is exceeded in the piezoelectric paint. The effect of piezoelectric ceramic volume fraction on the electromechanical properties of piezoelectric paint is first examined. The proposed model for piezoelectric paint considers the effect of air void contents and poling field on the elastoelectric properties of piezoelectric paint. The parameters of the present model are calibrated with experimental data.

scholarly journals Theoretical and Experimental Study on the Effective Piezoelectric Properties of 1-3 Type Cement-Based Piezoelectric Composites

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1698 ◽  
Author(s):  
Jun Zhu ◽  
Zhi Wang ◽  
Xingyi Zhu ◽  
Bo Yang ◽  
Chuanqing Fu
Keyword(s):  
Piezoelectric Properties ◽  
Volume Fraction ◽  
Homogenization Method ◽  
Asymptotic Homogenization ◽  
Piezoelectric Composites ◽  
Physical Systems ◽  
Asymptotic Homogenization Method ◽  
Proper Volume ◽  
Predicted Values ◽  
First Time

The double asymptotic homogenization method originated for analyzing physical systems containing two or more length scales was adopted to predict the characteristic of 1-3 type cement-based piezoelectric composites for the first time. The piezoelectric properties of 1-3 type cement-based piezoelectric composites were measured and comparisons between the experimental data and predicted values validate the effectiveness of the present analytical model. Moreover, numerical discussions and experiments show that one should choose proper volume fraction of constituents to achieve the best performance of the 1-3 type cement-based piezoelectric composites.

Effect of Shape Parameter on the Performance of 1-3 Piezoelectric Composites

2011 ◽  
Vol 306-307 ◽  
pp. 301-304
Author(s):  
Min Sun ◽  
Hua Wang ◽  
Shi Feng Huang ◽  
Xin Cheng
Keyword(s):  
Electromechanical Coupling ◽  
Shape Parameter ◽  
Volume Fraction ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Cross Sectional Area ◽  
Piezoelectric Composite ◽  
Sectional Area ◽  
Cross Sectional ◽  
Piezoelectric Composites

1-3 polymer-based piezoelectric composites were fabricated using epoxy as matrix by the cut-filling method. The influences of shape parameter on properties of the piezoelectric composite, which include the unit cross-sectional area and the aspect ratio w/t were analyzed. The results indicate that with the increasing of the unit cross-sectional area, the quality factor valueQmincreases and the hydrostatic piezoelectric voltageghincreases and then goes down rapidly while the PMN volume fractionφ(PMN) is kept under the 50%. When theφ(PMN) is 60%,ghis decreased. The trend of the hydrostatic figures of meritdh·ghis similar withghas the change of the unit cross-sectional area, but the value is different. In the 60% PMN volume fraction, the optimal value of thedh·ghis chosen. With the increasing of thew/t, the hydrostatic pressure sensitivityMh, thedh·ghvalues and theQmvalues are all decreased rapidly, and the thickness electromechanical coupling factorktis increased. In other words, the test results show that the smaller of unit cross-sectional area and thinner of thickness, the more helpful for frequency bandwidth and sensitivity when it is used in transducer.

Dielectric, Magnetic and Magnetoelectric Properties of a Laminated Composite with 1-3 Connection

2006 ◽  
Vol 111 ◽  
pp. 147-150 ◽  
Author(s):  
S.W. Or ◽  
N. Cai
Keyword(s):  
Epoxy Matrix ◽  
Volume Fraction ◽  
Laminated Composite ◽  
Bias Field ◽  
Piezoelectric Composite ◽  
Two Phase ◽  
Voltage Coefficient ◽  
Magnetoelectric Properties ◽  
Promising Application ◽  
Magnetically Aligned

A two-phase laminated composite was prepared by stacking one layer of thicknesspolarized 1−3 piezoelectric composite (PECP) plate between two layers of length-magnetized 1−3 magnetostrictive composite (MSCP) plates in the thickness direction. The PECP plate consisted of 0.68 volume-fraction PZT bars embedded in Spurr epoxy matrix, while the MSCP plates comprised 0.51 volume-fraction Terfenol-D particles embedded and magnetically aligned in Spurr epoxy matrix. The dielectric, magnetic and magnetoelectric properties of the laminate were measured as a function of both frequency and magnetic bias field. A giant magnetoelectric voltage coefficient ( αE) of 15.4 V/cm·Oe was observed at the resonance frequency of ~59 kHz under a relatively low bias field of 0.75 kOe. This resonance αE was ~30 times larger than its non-resonance values, showing promising application of the proposed laminate in magnetoelectric conversion devices.

Effect of fibre content on the mechanical properties of hemp fibre woven fabrics/polypropylene composite laminates

2021 ◽  
pp. 096739112110239
Author(s):  
Sheedev Antony ◽  
Abel Cherouat ◽  
Guillaume Montay
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Composite Laminates ◽  
Volume Fraction ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Woven Fabrics ◽  
Fibre Content ◽  
Viscoelastic Behaviour ◽  
Hemp Fibre

Nowadays natural fibre composites have gained great significance as reinforcements in polymer matrix composites. Composite material based on a polymer matrix reinforced with natural fibres is extensively used in industry due to their biodegradability, recyclability, low density and high specific properties. A study has been carried out here to investigate the fibre volume fraction effect of hemp fibre woven fabrics/PolyPropylene (PP) composite laminates on the tensile properties and impact hammer impact test. Initially, composite sheets were fabricated by the thermal-compression process with desired number of fabric layers to obtain composite laminates with different fibre volume fraction. Uniaxial, shear and biaxial tensile tests were performed and mechanical properties were calculated. Impact hammer test was also carried out to estimate the frequency and damping parameters of stratified composite plates. Scanning Electron Microscope (SEM) analysis was performed to observe the matrix and fibre constituent defects. Hemp fabrics/PP composite laminates exhibits viscoelastic behaviour and as the fibre volume fraction increases, the viscoelastic behaviour decreases to elastic behaviour. Due to this, the tensile strength increases as the fibre content increases. On the other hand, the natural frequency increases and damping ratio decrease as the fibre volume fraction increases.

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