[논문]Investigation of Electrical Properties & Mechanical Quality Factor of Piezoelectric Material (PZT-4A)

Butt, Zubair; Anjum, Zeeshan; Sultan, Amir; Qayyum, Faisal; Khurram Ali, Hafiz Muhammad; Mehmood, Shahid

doi:10.5370/jeet.2017.12.2.846

Investigation of Electrical Properties & Mechanical Quality Factor of Piezoelectric Material (PZT-4A) 원문보기

Journal of electrical engineering & technology, v.12 no.2, 2017년, pp.846 - 851

Butt, Zubair (Dept. of Mechatronics Engineering, UET Taxila, Chakwal Campus) , Anjum, Zeeshan (Dept. of Mechanical Engineering, UET Taxila) , Sultan, Amir (Dept. of Mechatronics Engineering, UET Taxila, Chakwal Campus) , Qayyum, Faisal (Dept. of Mechanical Engineering, UET Taxila) , Khurram Ali, Hafiz Muhammad (Dept. of Mechatronics Engineering, UET Taxila, Chakwal Campus) , Mehmood, Shahid (Dept. of Mechatronics Engineering, UET Taxila, Chakwal Campus)

Abstract ▼ AI-Helper

Piezoelectricity is the capability of a piezoelectric material to change mechanical energy into electrical energy. The determination of electrical and mechanical properties plays a significant role in characterizing the piezoelectric material. The energy losses characteristics of piezoelectric material can be described by mechanical quality factor. In this paper, the output voltage and mechanical quality factor of Lead Zirconate Titanate (PZT-4A) piezoelectric material is determined under various resistance and loading conditions by using the test setup. The commercial FEM software ABAQUS is used to analyze the performance of piezoelectric material under static loading conditions. It is observed that these properties affect the performance of a material particularly in the designing of smart structures. The experimental results are partially compared to the simulation values.

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문제 정의

The prediction of electrical and mechanical properties plays a vital role in characterising the piezoelectric material and they are influenced by operating and testing conditions [20]. In this study, our aim is to investigate the mechanical characteristic and electrical response of a rectangular shaped Lead Zirconate Titanate (PZT-4A) piezoelectric material simultaneously. The work has been divided in four major phases.
The aim of this research work is to investigate the effect of varying resistance on the output voltage of Lead Zirconate Titanate (PZT-4A) at different frequencies using the proposed experimental setup.
The first work to harvest energy from the human body by using piezoelectric material was published in 1995. The aim was to derive the low power electronics devices by using piezoelectric energy harvesting system [9]. An experimental and mathematical frequency domain analysis for two degree of freedom wing-based piezoelectric energy harvester was conducted to study the effect of electrical load resistance at various frequencies and amplitudes [10].

가설 설정

1. With the increase in resistance from 1kΩ to 500kΩ the output voltage of Lead Zirconate Titanate (PZT-4A) piezoelectric material decreases at different frequency conditions. The maximum voltage drop was observed at 500kΩ resistance across a 200Hz frequency.
2. The negative linear relationship was observed between resistance and peak DC voltage at different frequency conditions.
3. The output voltage increases with the increase in resistance and load which shows that forceful range of applied load is directly responsible for output voltage.
4. The mechanical quality factor increase when loading increases which shows that efficiency of a piezo- electric material increases.

제안 방법

The energy loss characteristic and the effect of loading on the mechanical quality factor are analysed in phase-3. In phase-4 finite element simulation was carried out using numerical package ABAQUS^TM/Standard to determine the effect of loading on the output voltage of Lead Zirconate Titanate (PZT-4A) piezoelectric material.
In this phase experimentation was performed to find out the mechanical quality factor (Q_m) of a specimen at a constant resistance of 10kΩ under variable loading conditions ranging from 10kN/m² to 150kN/m². Increase in mechanical quality factor has been observed with the increase in load at constant resistance as shown in Fig.
A constant load was applied on the top surface of the material along their polarization directions. The design models of piezoelectric materials simulate free expansion of the actuators with fixed boundary condition at one end to avoid the rigid body motion. For mechanical boundary conditions all surface are free and for electrical boundary conditions bottom surface of the material was grounded and zero charge/symmetry condition was considered on the top surface.
5 shows the relationship of peak DC voltage and resistance at various loading conditions. The experiment was performed at 20,40,60,80 and 100kN/m² under variable resistance ranging from 1kΩ to 15kΩ across a 5Hz frequency. It was observed that on increasing resistance and loading, the peak DC voltage increases.
The experimentation was performed to determine the effect of various parameters on peak DC voltage and mechanical quality factor of a piezoelectric material. A rectangular shaped Lead Zirconate Titanate (PZT-4A) piezoelectric material was used and the parent properties of the specimen as provided by the supplier are given in Table 1.

대상 데이터

The experimentation was performed to determine the effect of various parameters on peak DC voltage and mechanical quality factor of a piezoelectric material. A rectangular shaped Lead Zirconate Titanate (PZT-4A) piezoelectric material was used and the parent properties of the specimen as provided by the supplier are given in Table 1. The size of specimen was 10x20x5mm.
A 3-D solid finite element model was developed in ABAQUS software to accurately predict the static response of a material subjected to a constant load. A rectangular shaped hexahedral coupled field element C3D8E having dimensions of 10x20x5mm was used to simulate the PZT-4A. The anisotropic material properties used in simulation of PZT-4A are given in Table 2.
The capacitance was noted via capacitance meter (DM-6013L). Specific resistance required according to the condition of circuit was provided by the decade resistor box (RM6-10073) having two crocodile probes connected in series with a test specimen. An impedance analyzer (E4990A) having frequency range of 12Hz to120MHz was used for measuring impedance.
The size of specimen was 10x20x5mm. The experimental setup consisted of a load cell (model HYTEK) placed on mild-steel iron sheet and a screw mechanism connected with 12V DC motor for regulating the load. A DC motor can apply a maximum of 600kN/m² load under wide frequency range of 1-10 kHz.

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