Theoretical modeling and experimental characterization of rate and temperature dependent electromechanical behavior of piezocomposites

Jayendiran, R.; Arockiarajan, A.

doi:10.1016/j.euromechsol.2017.11.008

Cited by 6 publications

(5 citation statements)

References 34 publications

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“…An external electric field is applied in the Y direction via steady state electric potentials of −125 V and +125 V on the bottom and top XZ faces respectively. The piezoelectric fibers considered in this example are PZT-5A1 34 with material properties listed in Table 4 and are poled in the Y direction. The passive matrix is isotropic and dielectric in nature with material properties: μ = 1 GPa , κ = 2.17 GPa and ϵ = 0.04 nF / m .…”

Section: Numerical Examplesmentioning

confidence: 99%

Cohesive zone phase field model for electromechanical fracture in multiphase piezoelectric composites

Tarafder

Dan

Ghosh

2023

Journal of Composite Materials

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This paper introduces a coupled electromechanical finite deformation phase field model for crack propagation and interfacial decohesion in multiphase piezoelectric composites with interfaces. The crack phase field model is augmented with cohesive traction-separation laws at the material interfaces, derived from a cohesive potential function. A Gibbs free energy density function is proposed, allowing for the incorporation of the anisotropic elastic stiffness of the piezoelectric material. Numerical simulations exhibiting different failure mechanisms are carried out to demonstrate the efficacy of the model. Effects of external electric field on crack evolution and the competition between penetration and deflection of a crack impinging on an interface are investigated. Limited verification tests are conducted with theoretical results. Finally, the model is used to simulate fracture in nonuniform piezocomposite microstructures. The effect of crack propagation on the evolution of the electric field with different crack face conditions are analyzed. Differences in the electromechanical responses of piezocomposites due to different fiber distributions are also observed.

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Section: Numerical Examplesmentioning

confidence: 99%

Cohesive zone phase field model for electromechanical fracture in multiphase piezoelectric composites

Tarafder

Dan

Ghosh

2023

Journal of Composite Materials

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“…To depict the experimental material behaviour through the proposed model, the material constants are taken from the literature [72]. A linear fit is used to evaluate the material constants at the intermediate temperatures.…”

Section: Ferroelectric Responsementioning

confidence: 99%

“…The maximum ECE of 0.19 K is computed at 200 °C under the applied electric field of 2.5 kV mm −1 for bulk piezocomposite (100% fibre volume fraction). The magnitude of predicted ECE is very less because the simulation is performed much below the Curie temperature of the fibre material (370 °C) [72]. batic temperature usually its maximum value at the curie temperature.…”

Section: Electrocaloric Effectmentioning

confidence: 99%

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Study of electro-elastocaloric effect and pyroelectric energy density in piezocomposites

Paul

Arockiarajan

2019

Smart Mater. Struct.

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Ferroelectric materials are soon to be considered as an alternate replacement for the vapour compression, and vapour absorption cooling systems and efficient energy harvesters from low-grade waste heat due to their electrocaloric and elastocaloric response. In the current work, a theoretical framework based on a thermodynamical approach is proposed to estimate the electrocaloric, elastocaloric and electro-elastocaloric effect as an isothermal change in the entropy or adiabatic temperature change (ΔT) in the piezocomposites. The proposed nonlinear constitutive model has been incorporated into a non-iterative algorithmic setup to capture the ferroelectric and ferroelastic response at different temperatures for piezocomposites. The model parameters are obtained by performing experiments for various fibre volume fractions of 1–3 type piezocomposites and are used to simulate the relations between polarization–temperature and strain–temperature at different external mechanical and electric fields. Using the present model, an Olsen cycle (pyroelectric energy harvesting cycle) is drawn to predict the pyroelectric energy density (ND) of piezocomposites.

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“…Research has been carried out to understand these nonlinearities in 1-3 piezocomposites: experimental studies have been performed alongside theoretical modeling [99,114,115]. For instance, the effect of viscoelastic matrix on the hysteresis of 1-3 piezocomposites have been reported to explain the effect of matrix creep on the electromechanical response [115].…”

Section: Introductionmentioning

confidence: 99%

Effective properties and nonlinearities in 1-3 piezocomposites: a comprehensive review

Pramanik

Arockiarajan

2019

Smart Mater. Struct.

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1-3 piezocomposites are excellent candidate materials for sensor, actuator and transducer applications owing to their remarkable dielectric properties, enhanced piezoelectric coupling constants and improved hydrostatic performance along with tunable acoustic impedance, high bandwidth and reliability. These materials find extensive use in aerospace, naval and biomedical sectors. 1-3 piezocomposites show a linear response when subjected to low electric fields and/or mechanical stresses. In such cases, linear models are sufficient for predicting their linear response. But, when high electro-mechanical loads are applied to these materials, they show nonlinearity owing to the presence of a passive and viscoelastic polymer matrix phase and inherent hysteretic damping in the piezoceramic fibers. This is when it becomes mandatory to understand both their linear and nonlinear behavior under different magnitudes of thermo-electro-mechanical static and dynamic loads. Linear response is modeled using linear piezoelectric constitutive equations. Nonlinearities in the form of hysteresis, depolarization, fatigue and creep occurs in 1-3 piezocomposites, which drastically affects their accuracy, precision and efficiency. In order to understand these nonlinearities, analytical and numerical methods have been proposed by several researchers in the past. An endeavor has been undertaken to review some of the attempts made earlier in these directions. Effective properties of these inhomogeneous media are evaluated through different hypotheses and assumptions. Most often, experimental routes are undertaken to predict material properties of 1-3 piezocomposites; nevertheless, the experimental evaluation of a few material properties is quite difficult and sometimes impossible, even with the best state-of-the-art experimental facilities. This motivates researchers to develop theoretical models to predict these material properties. Nonlinearities in 1-3 piezocomposites have been studied by researchers earlier with different theoretical modeling approaches and experimental techniques. This review paper is an endeavor to discuss the progress regarding the study of effective properties and nonlinearities in 1-3 piezocomposites in a coherent and holistic manner.

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Theoretical modeling and experimental characterization of rate and temperature dependent electromechanical behavior of piezocomposites

Cited by 6 publications

References 34 publications

Cohesive zone phase field model for electromechanical fracture in multiphase piezoelectric composites

Cohesive zone phase field model for electromechanical fracture in multiphase piezoelectric composites

Study of electro-elastocaloric effect and pyroelectric energy density in piezocomposites

Effective properties and nonlinearities in 1-3 piezocomposites: a comprehensive review

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