Energy harvesting from unimorph piezoelectric circular plates under random acoustic and base acceleration excitations

Bakhtiari-Shahri, Mohsen; Moeenfard, Hamid

doi:10.1016/j.ymssp.2019.05.017

Cited by 13 publications

(6 citation statements)

References 26 publications

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“…Unimorph piezoelectric actuators are characterized by the single layer of piezoelectric materials sandwiched between layers of thin electrically conductive metal electrodes [41][42][43]. Figure 8(a) represents the different configuration of the monolayer piezo actuator.…”

Section: Unimorph Piezoelectric Actuatormentioning

confidence: 99%

“…Microfluidic devices such as micropumps [47], micromixers, micro-reactors, micro-separators, microvalves make extensive use of unimorph/bimorph piezoelectric actuators as an active source for actuation [2]. The precision bending motion generated by the flexible piezoelectric actuators controls the flow of the fluid through micro-devices [35,[41][42][43][44]. Such microfluidic devices find extensive application in drug delivery, electronic cooling, fuel cells, lab on a chip, micro jet dispensers etc [2].…”

Section: Applications and Commercial Aspects Of Piezoelectric Actuatorsmentioning

confidence: 99%

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Recent trends in piezoelectric actuators for precision motion and their applications: a review

Mohith¹,

Upadhya²,

Navin³

et al. 2020

Smart Mater. Struct.

191

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The need for precision positioning applications has enormously influenced the research and development towards the growth of precision actuators. Over the years, piezoelectric actuators have significantly satisfied the requirement of precision positioning to a greater extent with the capability of broad working stroke, high-accuracy, and resolution (micro/nano range) coupled with the advantage of faster response, higher stiffness, and actuation force. The present review intends to bring out the latest advancement in the field of piezoelectric actuator technology. This review brings out the specifics associated with the development of materials/actuators, the working principles with different actuation modes, and classifications of the piezoelectric actuators and their applications. The present article throws light on the design, geometrical features, and the performance parameters of various piezoelectric actuators right from unimorph, bimorph, and multilayer to the large displacement range actuators such as amplified actuators, stepping actuators with relevant schematic representations and the quantitative data. A comparative study has been presented to evaluate the pros and cons of different piezoelectric actuators along with quantitative graphical comparisons. An attempt is also made to highlight the application domains, commercial and future prospects of technology development towards piezoelectric actuators for precision motion applications. The organization of the paper also assists in understanding the piezoelectric materials applicable to precision actuators. Furthermore, this paper is of great assistance for determining the appropriate design, application domains and future directions of piezoelectric actuator technology.

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Section: Unimorph Piezoelectric Actuatormentioning

confidence: 99%

Section: Applications and Commercial Aspects Of Piezoelectric Actuatorsmentioning

confidence: 99%

Recent trends in piezoelectric actuators for precision motion and their applications: a review

Mohith¹,

Upadhya²,

Navin³

et al. 2020

Smart Mater. Struct.

191

View full text Add to dashboard Cite

show abstract

“…Wahad et al also modeled and simulated it, and obtained the relationship between its open-circuit output voltage, maximum deflection, as well as internal stress and device size, and applied pressure amplitude [26]. On the other hand, Moeenfard et al used the random vibration theory to model a stationary disk piezoelectric energy harvester around the plate and obtained the statistical parameters of the dynamic characteristics of the plate and the captured energy voltage [27]. Hegde et al modeled a circular piezoelectric energy harvester in acoustic energy mode and analyzed the effects of equivalent circuit parameters, deflection values, linearity, and frequency response on its voltage.…”

Section: Introductionmentioning

confidence: 99%

Modeling, Simulation and Analysis of Intermediate Fixed Piezoelectric Energy Harvester

Wang

et al. 2022

Energies

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To address the problem that piezoelectric energy harvesters are difficult to apply in certain environments, this paper establishes the theoretical study of the intermediate fixed disc piezoelectric energy harvester (IFDPEH) based on the unimorph under concentrated force. The reliability of the model was indirectly verified by numerical simulation and Computer-Aided Engineering (CAE) simulation. The effects of load, radius ratio (piezoelectric layer/intermediate support), thickness ratio (piezoelectric layer/total thickness), and elastic modulus ratio (substrate/piezoelectric layer) on electrical energy were studied. The results indicate that the radius/thickness ratios of the IFDPEH based on aluminum and beryllium bronze are 0.05/0.31 and 0.05/0.48, respectively. In addition, through parameter comparison, it is found that the most important parameters affecting IFDPEH power are radius ratio and large load. The results are demonstrated to be meaningful for broadening the application of piezoelectric energy harvesters by the derived closed-form equations for the electrical energy along the diameters of the piezoelectric discs in the z-direction.

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“…Three different shapes-near edge width quadratic (NEWD), half quadratic, and trapezoidal-were analyzed, and the results showed NEWD has a better performance in terms of output power [12]. By varying the geometries of the cantilever beam, it was found that a tapered cantilever had a better performance than a rectangle beam [13,14]. For practical cases, where the energy harvester is excited randomly, a clamped circular plate energy harvester interconnected to a circular piezoelectric layer was designed to optimize the performance, because if the resonant frequency of the designed beam is close to the available mechanical vibrations, the displacement of the beam is maximum and hence, it generates maximum power output [15].…”

Section: Introductionmentioning

confidence: 99%

Research of PVDF Energy Harvester Cantilever Parameters for Experimental Model Realization

et al. 2020

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Piezoelectric energy harvesters have been extensively researched for use with wireless sensors or low power consumption electronic devices. Most of the piezoelectric energy harvesters cannot generate enough power for potential applications. In this study, we explore the parameters, including gap and proof mass, that can affect the damping of the cantilever to optimize the design of the energy harvester. A finite analysis is conducted using COMSOL Multiphysics software. Usually, this type of simulation is performed using the loss factor. However, it is known that results from the loss factor produce models that do not fit the experimental data well. In fact, the result of output voltage using the loss factor is 50% higher than the real value, which is due to ignoring the adverse effect of a superimposing mechanical damping of different constituent materials. In order to build a true model, Rayleigh damping coefficients are measured to use in a simulation. This resulted in a closer fit of modeling and experimental data, and a 5 times better output voltage from the optimized energy harvester compared with using the smallest gap and mass.

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Energy harvesting from unimorph piezoelectric circular plates under random acoustic and base acceleration excitations

Cited by 13 publications

References 26 publications

Recent trends in piezoelectric actuators for precision motion and their applications: a review

Recent trends in piezoelectric actuators for precision motion and their applications: a review

Modeling, Simulation and Analysis of Intermediate Fixed Piezoelectric Energy Harvester

Research of PVDF Energy Harvester Cantilever Parameters for Experimental Model Realization

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