Resonant and equivalent circuit characteristics of piezoelectric ceramics disk with different (diameter-to-thickness) ratio

Ming Cheng Chure, Long Wu, King Kung Wu, Yu Chang Lin, Meng Jiun Wu, Chia Cheng Tung, Yi Yu Lu

研究成果: Conference contribution

摘要

In this paper, the resonant spectrum of the piezoelectric ceramic thin disk with different diameter-to-thickness ratio in the frequency range from 50 kHz to 1 MHz was studied by the impedance analysis method. If the diameter-to-thickness ratio was higher than 15, the vibration mode of the piezoelectric ceramic thin disk was pure radial mode, besides the fundamental radial mode, there are some radial overtone modes with inharmonic frequency separation in the entire frequency range from 50 kHz to 1 MHz. The number of radial overtone modes depended on the diameter; the ceramic disk with larger diameter had more overtone modes than that of ceramic disk with smaller diameter. With the same diameter, the resonant frequency ratio of fundamental mode to that of overtone mode was decreased with the increasing of thickness. With the same thickness, the resonant frequency ratio of fundamental mode to that of overtone mode was decreased with the decreasing of diameter. But when the diameter-to-thickness ratio was less than 15, some other vibration modes were existed in the frequency range higher than 600 kHz. From experiment, it is found that the effective electromechanical coupling factor keff was decreased with the increasing of overtone mode order. The decrease of effective electromechanical coupling factor keff was due to the less electrical energy transfer to mechanical energy with the increasing of overtone mode order. In the equivalent circuit, the motional resistance R1 and the motional inductance L1 were increased, but the motional capacitance C1 and the capacitance Co were decreased with the increasing of overtone mode order.

原文English
主出版物標題Proceedings of the 2013 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2013
發行者IEEE Computer Society
ISBN(列印)9781479932894
DOIs
出版狀態Published - 2013 一月 1
事件2013 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2013 - Changsha, China
持續時間: 2013 十月 252013 十月 27

出版系列

名字Proceedings of the 2013 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2013

Other

Other2013 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2013
國家China
城市Changsha
期間13-10-2513-10-27

    指紋

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

引用此

Chure, M. C., Wu, L., Wu, K. K., Lin, Y. C., Wu, M. J., Tung, C. C., & Lu, Y. Y. (2013). Resonant and equivalent circuit characteristics of piezoelectric ceramics disk with different (diameter-to-thickness) ratio. 於 Proceedings of the 2013 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2013 [6841107] (Proceedings of the 2013 Symposium on Piezoelectricity, Acoustic Waves and Device Applications, SPAWDA 2013). IEEE Computer Society. https://doi.org/10.1109/SPAWDA.2013.6841107