Theoretical modeling and experimental verification of an improved radial composite transducer consisting of a metal ring and a radially polarized piezoelectric stack

Cheng, Chen; Guo, Jianzhong; Lin, Shuyu

doi:10.1016/j.ultras.2023.107061

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…Chen et al proposed a novel ring ultrasonic composite transducer consisting of a metal ring and a piezoelectric ceramic stack ring. Compared with the traditional radial composite transducer, the electrical impedance of the novel composite transducer decreases to 26%, while the radial vibration displacement increases to 142% under the same electrical excitation [31]. Wang et al investigated the vibration characteristics of laminated piezoelectric shells, while the theoretical analysis was based on the thin spherical shell theory [32].…”

Section: Introductionmentioning

confidence: 99%

Radial vibration analysis for piezoceramic shell-stacked spherical transducer with thick walls

Tang,

Chen,

Tian

et al. 2024

Smart Mater. Struct.

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With the development of ultrasonic transducers, spherical piezoelectric transducers have attracted tremendous attention in a variety of application fields due to their ability to resist higher pressures and produce omnidirectional radiation. However, the wall thickness of piezoceramic spherical shells is usually thin due to the limitations of polarization technology and operating voltage, leading to the limited vibration performance and power capacity of the spherical transducer. We present a piezoceramic shell-stacked spherical transducer (PSST) capable of addressing the problem of difficult excitation caused by the thick wall of the piezoceramic shell. The resulting device consists of a two-layered piezoceramic shell interposed between the inner and outer concentric spherical metal shells. By removing the equivalent mechanical transformers, a novel electromechanical equivalent circuit of the PSST is established to simplify the theoretical analysis of the designed PSST. The electromechanical characteristics of the resulting device are experimentally verified, and the measured results are in good agreement with the theoretical predictions and simulation results. Our design opens up possibilities for designing spherical transducers with high-vibration performance and may offer potential for a wide range of applications such as underwater detection and structural health monitoring.

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Section: Introductionmentioning

confidence: 99%

Radial vibration analysis for piezoceramic shell-stacked spherical transducer with thick walls

Tang,

Chen,

Tian

et al. 2024

Smart Mater. Struct.

Self Cite

View full text Add to dashboard Cite

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Multi-mode coupled vibration analysis and radiation sound field investigation of a novel multidirectional piezoelectric ultrasonic transducer

Chen,

Guo,

Lin

2024

Ultrasonics

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Coupled vibration of a radially polarized piezoelectric cylinder with a co-axial elastic cylinder of varying height

Dong,

Chen,

Lin

2024

The Journal of the Acoustical Society of America

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The cylindrical piezoelectric transducer has the advantages of large radiation area, high electromechanical coupled coefficient, and omni-direction radiation along the radius. In this paper, a piezoelectric transducer consisting of a radially polarized piezoelectric cylinder and an outer metal cylinder of varying height is presented. The metal cylinder of varying height is approximated as the radial superposition of multiple uniform height metal cylinders, and the equivalent impedance of the transducer's coupled vibration is obtained by using the impedance matrix method, and then the resonance frequency, anti-resonance frequency, effective electromechanical coupled coefficient, and displacement amplification coefficient are obtained. In this paper, the relationship between the vibration characteristics of the cylindrical piezoelectric transducer and its geometric dimensions is studied. An experimental sample of the transducer is fabricated and assembled, and its electrical impedance curve is measured. The measured results are in good agreement with the simulation results and the theoretical calculation results. The displacement distribution of the radiation surface of the transducer at resonance frequency is measured, which verifies that the two coupled vibration modes of the transducer can be effectively excited.

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Theoretical modeling and experimental verification of an improved radial composite transducer consisting of a metal ring and a radially polarized piezoelectric stack

Cited by 4 publications

References 25 publications

Radial vibration analysis for piezoceramic shell-stacked spherical transducer with thick walls

Radial vibration analysis for piezoceramic shell-stacked spherical transducer with thick walls

Multi-mode coupled vibration analysis and radiation sound field investigation of a novel multidirectional piezoelectric ultrasonic transducer

Coupled vibration of a radially polarized piezoelectric cylinder with a co-axial elastic cylinder of varying height

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