Vibration characteristics of a piezoelectric disk laminated with an elastic disk

Piao, Changhao; Kim, Jin Oh

doi:10.1007/s12206-016-1102-9

Cited by 16 publications

(4 citation statements)

References 12 publications

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“…One is to consider the mechanical and dielectric losses in the theoretical models (Xie et al, 2020), which is much closer to real situation. The other is to introduce the three-dimensional coupled vibration models involving the axial and radial vibrations (Lin, 2004; Nishamol and Ebenezer, 2018; Piao and Kim, 2016; Lin, 2000; Xu and Lin, 2018; Zhang et al, 2015a) into the multilayer models, which are more comprehensive and actuate to describe the real transducers than the single radial vibration based on the plane stress condition.…”

Section: Analysis and Discussionmentioning

confidence: 99%

Experimental validation of axially polarized multilayer piezoelectric composite cylindrical transducers with adjustable multifrequency

Qin

Wang

et al. 2021

Journal of Intelligent Material Systems and Structures

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The axially polarized multilayer piezoelectric composite cylindrical transducers with adjustable multifrequency capability have been proposed by adjusting the external electric resistance and the ratio of piezoelectric layer numbers between the actuator part and the sensor part, which have promising potential in designing the novel cymbal transducer for underwater sound projector and ultrasonic radiator applications. In the previous studies, the multilayer models were established to guide the design of the transducers with arbitrary layer number, and analyzed the dynamic characteristics theoretically. In this work, an experimental study is performed to validate the theoretical models and predictions. Piezoelectric rings with multiple concentric annular electrodes are designed to characterize the multilayer piezoelectric composite cylindrical transducers. The top surface of the piezoelectric rings is divided into two separate parts. One part is covered by multiple concentric annular electrodes, corresponding to the piezoelectric layers, and the other part is uncovered, corresponding to the elastic layers. Four prototypes are fabricated and each consists of four concentric annular electrodes. The impedance spectra are measured by the impedance analyzer to obtain the resonance and anti-resonance frequencies. Effects of two adjusting methods on the dynamic characteristics are evaluated experimentally. The experimental results basically coincide with the theoretical ones. This comprehensive experimental work assures the feasibility of using axially polarized multilayer piezoelectric composite cylindrical transducers with adjustable multifrequencies and confirms the benefit of the developed theoretical models for guiding the fabrication and optimization of this type of transducers.

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Section: Analysis and Discussionmentioning

confidence: 99%

Experimental validation of axially polarized multilayer piezoelectric composite cylindrical transducers with adjustable multifrequency

Qin

Wang

et al. 2021

Journal of Intelligent Material Systems and Structures

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“…As illustrated in Figure 9a,b, it consists of thin piezoceramic disks or PVDF foils, coated with metal electrodes on both sides. The piezoceramic disks or PVDF films are attached to a metal shim fixed on the edges of the clamping ring or a plastic core, which act as a passive layer to protect the thin piezoelectric films and make the piezoelectric material stretch when the flat plate is subjected to a compressive force [113,114]. The flat plate energy harvester mainly uses the "d 31 " mode for energy harvesting.…”

Section: Flat Platementioning

confidence: 99%

“…fixed on the edges of the clamping ring or a plastic core, which act as a passive layer to protect the thin piezoelectric films and make the piezoelectric material stretch when the flat plate is subjected to a compressive force [113,114]. The flat plate energy harvester mainly uses the " " mode for energy harvesting.…”

Section: Flat Platementioning

confidence: 99%

A Review of Piezoelectric Footwear Energy Harvesters: Principles, Methods, and Applications

Zhao,

Qian,

Hatfield

et al. 2023

Sensors

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Over the last couple of decades, numerous piezoelectric footwear energy harvesters (PFEHs) have been reported in the literature. This paper reviews the principles, methods, and applications of PFEH technologies. First, the popular piezoelectric materials used and their properties for PEEHs are summarized. Then, the force interaction with the ground and dynamic energy distribution on the footprint as well as accelerations are analyzed and summarized to provide the baseline, constraints, potential, and limitations for PFEH design. Furthermore, the energy flow from human walking to the usable energy by the PFEHs and the methods to improve the energy conversion efficiency are presented. The energy flow is divided into four processing steps: (i) how to capture mechanical energy into a deformed footwear, (ii) how to transfer the elastic energy from a deformed shoes into piezoelectric material, (iii) how to convert elastic deformation energy of piezoelectric materials to electrical energy in the piezoelectric structure, and (iv) how to deliver the generated electric energy in piezoelectric structure to external resistive loads or electrical circuits. Moreover, the major PFEH structures and working mechanisms on how the PFEHs capture mechanical energy and convert to electrical energy from human walking are summarized. Those piezoelectric structures for capturing mechanical energy from human walking are also reviewed and classified into four categories: flat plate, curved, cantilever, and flextensional structures. The fundamentals of piezoelectric energy harvesters, the configurations and mechanisms of the PFEHs, as well as the generated power, etc., are discussed and compared. The advantages and disadvantages of typical PFEHs are addressed. The power outputs of PFEHs vary in ranging from nanowatts to tens of milliwatts. Finally, applications and future perspectives are summarized and discussed.

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“…Its physical parameters are distinguished by subscript 2. Its stresses can also be obtained [45,46].…”

Section: Theoretical Analysis Of Piezoelectric Stackmentioning

confidence: 99%

Research on Stacked Piezoelectric Cymbal Vibrator

Liu,

Zheng,

Guo

et al. 2023

Micromachines

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As demand for haptic feedback increases, piezoelectric materials have become one of the best candidate materials due to their small size, high electromechanical coupling coefficient, and fast response. A stacked piezoelectric cymbal vibrator is proposed based on the common cymbal-type transducer, which is composed of a piezoelectric stack to drive and a cymbal disk to amplify displacement. A coupling theoretical model between the piezoelectric stack and the cymbal-type structure is established. The longitudinal and radial displacements of the stacked piezoelectric cymbal vibrator are calculated in the low frequency range (<1000 Hz) by the theoretical model and the finite element method. The theoretical and numerical results are in good agreement. The results show that the radial displacement can be converted into longitudinal displacement and then effectively amplified by the cymbal disk with an amplification ratio of 30. The feature is conducive to its widespread application in the field of consumer electronics.

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Vibration characteristics of a piezoelectric disk laminated with an elastic disk

Cited by 16 publications

References 12 publications

Experimental validation of axially polarized multilayer piezoelectric composite cylindrical transducers with adjustable multifrequency

Experimental validation of axially polarized multilayer piezoelectric composite cylindrical transducers with adjustable multifrequency

A Review of Piezoelectric Footwear Energy Harvesters: Principles, Methods, and Applications

Research on Stacked Piezoelectric Cymbal Vibrator

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