Measurements of Radial In-plane Vibration Characteristics of Piezoelectric Disk Transducers

Kim, Dae Jong; Oh, Se Hwan; Kim, Jin Oh

doi:10.5050/ksnve.2015.25.1.013

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…First, the resonance occurring at the lowest frequency is a radial vibration mode, and at this time, the resonance and anti-resonance frequencies and resonance resistance values affect the electromechanical coupling coefficient and mechanical quality coefficient [28][29][30]. Second, the thickness vibration mode of piezoelectric ceramics occurring at high frequencies is the most important vibration mode for transmitting and receiving ultrasonic waves, and the center frequency of the vibrator strongly depends on the thickness of the piezoelectric ceramics [31]. Therefore, to analyze the resonance mode according to the change in thickness, the diameter (D) of the ceramic was fixed to 16 mm, which is the diameter after sintering, and the models were designed with four thicknesses (T), namely 0.8, 1.2, 1.6, and 2.0 mm.…”

Section: Resultsmentioning

confidence: 99%

Design and Preparation of Self-Oscillating Actuators Using Piezoelectric Ceramics with High Coupling Factors and Mechanical Quality Factors

Kim

Lee

2022

Micromachines

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Piezoelectric material properties were optimized to develop materials for an ultrasonic vibrator targeting a high vibration efficiency. Herein, novel materials were developed using a composition represented by 0.08Pb(Ni1/3Nb2/3)O3-0.07Pb(Mn1/3Nb2/3)O3-0.85Pb(Zr0.5Ti0.5)O3 + 0.3 wt.% CuO + 0.3 wt.% Fe2O3 with 0.3 wt.% Sb2O3 doping. A ceramic shape with a thickness of 2 mm was optimized using finite element analysis software, and high values of coupling factors (0.54) and mechanical quality factors (1151) were obtained. This ceramic was used to fabricate a bio-beauty device (frequency = 1 MHz), and the manufactured ultrasonic vibrator indicated that the actuator oscillated with the maximum amplitude at a frequency of 1.06 MHz.

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Section: Resultsmentioning

confidence: 99%

Design and Preparation of Self-Oscillating Actuators Using Piezoelectric Ceramics with High Coupling Factors and Mechanical Quality Factors

Kim

Lee

2022

Micromachines

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“…단층 압전 원판의 진동 특성은 이미 이론적으 로 해석되고, 유한요소 해석 및 실험으로 검증되었 다 (7,8) . 그래서 지름 크기가 다른 압전 원판들을 겹쳐 적층 한 변환기가 고안되었다 (9) .…”

Section: 압전 원판의 두께방향 진동과 반경방향 진동은 푸아송(Poisson) 비에 의해 동시에 복합적으로 발생unclassified

Vibration Characteristics of Stacked Piezoelectric Transducers

Kim¹,

Kim

2015

Transactions of the Korean Society for Noise and Vibration Engi

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This paper deals with the vibration characteristics of stacked transducers composed of piezoelectric discs, which are main elements of ultrasonic sensors or actuators. The stacked transducers were devised in the sense of natural frequencies. Two-or three-layer transducers were fabricated with piezoelectric discs of different diameters. The natural frequencies were determined by the finite element analysis and they were verified by comparing them with experimental results. It appeared that the natural frequencies of the stacked piezoelectric transducers include the natural frequencies of the constituent piezoelectric discs and the natural frequencies caused by stacking. Based on these results, it would be possible to predict the vibration characteristics of the stacked piezoelectric transducers in a design process.

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“…Papers [8,9] experimentally deal with the radial in-plane vibration characteristics of disk-shaped piezoelectric transducers. The radial in-plane motion, which is induced due to Poisson's ratio in the piezoelectric disk polarized in the thickness direction, is measured using an in-plane laser vibrometer, and the natural frequencies are measured using an impedance analyzer.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Energy Conversion in a Piezo Disk Using a Controlled Supply of Electrical Load

Boryseiko,

Laptiev,

Perehuda

et al. 2023

Axioms

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Piezoceramic products are actively used in modern technical devices and appliances. Disk piezoelectric devices are widely used in elements of information systems: in wireless communication, elements of satellite communication, global positioning systems. Among such devices, microwave piezo motors on traveling waves of various types are distinguished, including a motor built on an electromechanical disk converter, which performs non-axisymmetric oscillations under the action of a harmonic electric load. In this study, we perform separation of the electrode coating of the plate with thin diametrical dielectric sections and introduce a time-varying electric potential difference of different amplitude or phase to individual parts of the plate. We study the problem of non-axisymmetric planar oscillations of a piezoceramic disk with thickness polarization and the problem of optimization of the electromechanical coupling coefficient (EMCO) value as a function of an infinite number of parameters in space l2 of square summable sequences.

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Measurements of Radial In-plane Vibration Characteristics of Piezoelectric Disk Transducers

Cited by 9 publications

References 14 publications

Design and Preparation of Self-Oscillating Actuators Using Piezoelectric Ceramics with High Coupling Factors and Mechanical Quality Factors

Design and Preparation of Self-Oscillating Actuators Using Piezoelectric Ceramics with High Coupling Factors and Mechanical Quality Factors

Vibration Characteristics of Stacked Piezoelectric Transducers

Optimizing Energy Conversion in a Piezo Disk Using a Controlled Supply of Electrical Load

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