Measurement of thermal depolarization effects in piezoelectric coefficients of soft PZT ceramics via the frequency and direct methods

Fialka, Jiří; Beneš, Petr; Michlovská, Lenka; Klusáček, Stanislav; Pikula, Stanislav; Dohnal, P.; Havránek, Zdeněk

doi:10.1016/j.jeurceramsoc.2016.03.036

Cited by 18 publications

(7 citation statements)

References 16 publications

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“…Weight reduction is also important to ensure the robustness and optimization of satellite designs [10]. However, depolarization is complicated at high thermal shocking temperatures near the Curie temperature; at this point modal analysis at various frequency levels can be used to obtain the most opti-mized vibration and resistance [11]. An analytical solution for piezoelectric bimorph energy harvesters is presented to observe the range of satellite tuning for various frequency applications and resistances, and ultimately, to achieve a hybrid structure [12].…”

Section: Introductionmentioning

confidence: 99%

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

et al. 2017

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Piezoelectric materials are widely used as smart structures in cubic reconnaissance satellites because of their sensing, actuating, and energy-harvesting abilities. In this study, an analytical model is developed in specific mechanical thermal shocking conditions. A special circuit and apparatus is designed for experimentation on the basis of the inverse piezoelectric effect. An equivalent circuit method is used to establish the relationship between the resistance and peak-to-peak voltage of lead zirconate titanate used as smart materials for cubic reconnaissance satellites. Various frequencies and resistance were applied in different mechanical thermal shocking conditions. Moreover, numerical simulations are conducted in various mechanical loading conditions to determine the accumulative effect. The model provides a novel mechanism to characterize the smart structures in cubic reconnaissance satellites. A rise in temperature increases peak-to-peak voltage; a rise in frequency decreases peak-to-peak voltage; and intensified resistance decreases peak-to-peak voltage. Based on experimentation and simulation, the optimum resistance is predicted for the various frequencies and temperatures. The various conditions may correspond to the different applications of smart structures for cubic reconnaissance satellites. The analytical calculations are in good agreement with experimental and numerical calculations.

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Section: Introductionmentioning

confidence: 99%

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

et al. 2017

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“…The disk shape is used to make the source as omnidirectional as possible. The PZT Curie temperature is relatively high (350 • C), thus preventing PZT depolarization and loss of its piezoelectric properties during curing with a relatively high-temperature thermal cycling [41,42]. Attention must be paid to the connection of wires to PZT electrodes.…”

Section: Instrumented Platesmentioning

confidence: 99%

Lead Zirconate Titanate Transducers Embedded in Composite Laminates: The Influence of the Integration Method on Ultrasound Transduction

et al. 2023

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In the context of an embedded structural health monitoring (SHM) system, two methods of transducer integration into the core of a laminate carbon fiber-reinforced polymer (CFRP) are tested: cut-out and between two plies. This study focuses on the effect of integration methods on Lamb wave generation. For this purpose, plates with an embedded lead zirconate titanate (PZT) transducer are cured in an autoclave. The embedded PZT insulation, integrity, and ability to generate Lamb waves are checked with electromechanical impedance, X-rays, and laser Doppler vibrometry (LDV) measurements. Lamb wave dispersion curves are computed by LDV using two-dimensional fast Fourier transform (Bi-FFT) to study the quasi-antisymmetric mode (qA0) excitability in generation with the embedded PZT in the frequency range of 30 to 200 kHz. The embedded PZT is able to generate Lamb waves, which validate the integration procedure. The first minimum frequency of the embedded PZT shifts to lower frequencies and its amplitude is reduced compared to a surface-mounted PZT.

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“…Pb(Zr 1− x Ti x )O 3 (PZT)‐based piezoelectric ceramics are widely used in various devices such as sensors, transducers and actuators because of their excellent piezoelectric properties . However, these ceramics contain a large amount of PbO (>60 wt%) and thus can result in the environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Orthorhombic‐pseudocubic phase transition and piezoelectric properties of (Na_0.5K_0.5)(Nb_1−xSb_x)‐SrZrO₃ ceramics

et al. 2017

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0.96(Na 0.5 K 0.5 )(Nb 1Àx Sb x )-0.04SrZrO 3 ceramics with 0.0≤x≤0.06 were well sintered at 1060°C for 6 hours without a secondary phase. Orthorhombic-tetragonal transition temperature (T O-T ) and Curie temperature (T C ) decreased with the addition of Sb 2 O 5 . The decrease in T C was considerable compared to that in T O-T , and thus the tetragonal phase zone disappeared when x exceeded 0.03. Therefore, a broad peak for orthorhombic-pseudocubic transition as opposed to that for orthorhombic-tetragonal transition appeared at 115°C-78.2°C for specimens with 0.04≤x≤0.06. An orthorhombic structure was observed for specimens with x≤0.03.However, the polymorphic phase boundary structure containing orthorhombic and pseudocubic structures was formed for the specimens 0.04≤x≤0.06. Furthermore, a specimen with x=0.055 exhibited a large piezoelectric strain constant of 325 pC/N, indicating that the coexistence of orthorhombic and pseudocubic structures could improve the piezoelectric properties of (Na 0.5 K 0.5 )NbO 3 -based leadfree piezoelectric ceramics.

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Measurement of thermal depolarization effects in piezoelectric coefficients of soft PZT ceramics via the frequency and direct methods

Cited by 18 publications

References 16 publications

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

Lead Zirconate Titanate Transducers Embedded in Composite Laminates: The Influence of the Integration Method on Ultrasound Transduction

Orthorhombic‐pseudocubic phase transition and piezoelectric properties of (Na_0.5K_0.5)(Nb_1−xSb_x)‐SrZrO₃ ceramics

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Measurement of thermal depolarization effects in piezoelectric coefficients of soft PZT ceramics via the frequency and direct methods

Cited by 18 publications

References 16 publications

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

Lead Zirconate Titanate Transducers Embedded in Composite Laminates: The Influence of the Integration Method on Ultrasound Transduction

Orthorhombic‐pseudocubic phase transition and piezoelectric properties of (Na0.5K0.5)(Nb1−xSbx)‐SrZrO3 ceramics

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Orthorhombic‐pseudocubic phase transition and piezoelectric properties of (Na_0.5K_0.5)(Nb_1−xSb_x)‐SrZrO₃ ceramics