TEMPERATURE DEPENDENCE OF PIEZOCERAMIC DISK RESONANT SPECTRUM IN RADIAL VIBRATION MODE
In this paper, the resonant spectrum of piezoceramic disk in the frequency range from 1 kHz to 1 MHz is studied by the impedance analysis method. There are totally four vibration modes existed in the measured frequency range. The first one is fundamental radial vibration mode, and then the others are three radial overtone modes with inharmonic frequency separation. With the increasing of temperature, the whole resonant spectrum shift to the higher frequency. The variation of fundamental series resonant frequency fs with temperature is larger than that variation of fundamental parallel resonant frequency fp with temperature. The effective electromechanical coupling factor keff decreased with the increasing of temperature. The effect of temperature to the overtones mode is more obvious than that of fundamental mode.
Resonant spectrum Radial vibration mode Overtones
Ming-Cheng Chure Long Wu King-Kung Wu Bing-Huei Chen Chia-Cheng Tung
Department of Electronics Engineering, Far-East University, Tainan City, Taiwan Department of Electrical Engineering, Nan Jeon Institute of Technology, Tainan City, Taiwan
国际会议
深圳
英文
290-292
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）