Buy article PDF
The purchased file will be sent to you
via email after the payment is completed.
US$ 35
|
Smart Structures and Systems Volume 21, Number 2, February 2018 , pages 151-161 DOI: https://doi.org/10.12989/sss.2018.21.2.151 |
|
|
|
Analysis on the cascade high power piezoelectric ultrasonic transducers |
||
Shuyu Linand Jie Xu
|
||
| Abstract | ||
| A new type of cascade sandwiched piezoelectric ultrasonic transducer is presented and studied. The cascade transducer is composed of two traditional longitudinally sandwiched piezoelectric transducers, which are connected together in series mechanically and in parallel electrically. Based on the analytical method, the electromechanical equivalent circuit of the cascade transducer is derived and the resonance/anti-resonance frequency equations are obtained. The impedance characteristics and the vibrational modes of the transducer are analyzed. By means of numerical method, the dependency of the resonance/anti-resonance frequency and the effective electromechanical coupling coefficient on the geometrical dimensions of the cascade transducer are studied and some interesting conclusions are obtained. Two prototypes of the cascade transducers are designed and made; the resonance/anti-resonance frequency is measured. It is shown that the analytical resonance/anti-resonance frequencies are in good agreement with the experimental results. It is expected that this kind of cascade transducer can be used in large power and high intensity ultrasonic applications, such as ultrasonic liquid processing, ultrasonic metal machining and ultrasonic welding and soldering. | ||
| Key Words | ||
| cascade piezoelectric transducer; longitudinal vibration; sandwiched transducer; effective electromechanical coupling coefficient | ||
| Address | ||
| Shuyu Lin and Jie Xu: Shaanxi key Laboratory of Ultrasonics, Shaanxi Normal University, 620 West Chang | ||