High power characteristics at antiresonance frequency of piezoelectric transducers

Hirose, Shigeo; Aoyagi, Manabu; Tomikawa, Yoshirô; Takahashi, Sadayuki; Uchino, Kenji

doi:10.1016/0041-624x(95)00082-e

Cited by 57 publications

(37 citation statements)

References 3 publications

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“…Many piezoelectric transducers operate in high power conditions, thus causing the need to measure piezoelectric properties under such circumstances [1]. Typical characterization techniques use lower power measurements, so researchers have developed specialized methods to characterize high power properties [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the mechanical quality factor under high power conditions in piezoelectric ceramics from electrical power

Shekhani

Uchino

2015

Journal of the European Ceramic Society

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Section: Introductionmentioning

confidence: 99%

Evaluation of the mechanical quality factor under high power conditions in piezoelectric ceramics from electrical power

Shekhani

Uchino

2015

Journal of the European Ceramic Society

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“…Using this method, in investigating resonant frequency of sandwich transducers, it was observed that, as expected, resonant frequency is affected not only by physical and mechanical characteristic of elements and axial dimensions, but also by lateral dimensions and cross section of the transducer [7]. Hirase et al [8] have explained variation of high-power PZT transducer parameters and mechanical losses, in particular, in resonant and anti-resonant frequencies and they have consequently recommended tuning in antiresonant frequency for higher quality factor. According to Powell and Hayward's [9] findings at a Center for Ultrasonic Engineering in Strathclyde University in Scotland, acoustic power of transducer will increase by keeping the axial length constant and adding to the number of PZT rings used in the structure.…”

Section: Introductionmentioning

confidence: 99%

An approach to design a high power piezoelectric ultrasonic transducer

2008

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Application of ultrasonic waves has been considerably progressed during the last decade and piezoelectric ceramics have had a common use as the driving source of such waves. However, there is not enough documented information on design and technology of manufacturing a high power ultrasonic transducer. In this paper, an attempt has been made to analyze the stress produced along the oscillating PZT employed ultrasonic head by applying the principles of acoustic wave propagation. Then, based on such analysis, general principles of PZT transducer design, excited by a DC-biased alternating electrical source, has been derived and finally a typical such transducer has been designed, manufactured and tested. By employing finite element modal analysis, the resonance frequency of the transducer was determined and compared with the experimental results. It was concluded that, the constitutive piezoelectric equations referred to in most sources and books are not valid for analyzing the acoustical dynamic stress in ultrasonic transducers. Instead, the analysis should be done with considering the dynamic behavior (elastic, damping and Inertia factors) of the problem.

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“…Therefore, the upper limit of the drive power is defined by the temperature rise. Heat generation of piezoelectric ceramics was reported as a function of vibration speed [6,7]. The vibration velocity of the fabricated samples was measured, and the load dependence of the efficiency was evaluated for each sample.…”

Section: Introductionmentioning

confidence: 99%