Effect of Tightening Torque on the Frequency of the Sandwich Piezoelectric Ceramic Transducer Vibrator
In the piezoelectric transducer vibrator assembly process, the pre-stress plays important influence on the resonance frequency of transducer vibrator. The effect of tightening torque on the resonance frequency and the impedance of the piezoelectric ultrasonic transducer vibrator during assembly process is studied in this paper. The relationships between resonance frequency, impedance and tightening torque are measured by experiments. As the tightening torque increased from 50 to 110 kgf.cm, the resonance frequency increased exponentially from 51.7 to 54.6 KHz while the impedance decreased exponentially from 12.1 to 5.8 Ohm. When the tightening torque was larger than 65 kgf.cm, the resonance frequency of transducer vibrator had little change. Experiments studied that the resonance frequency of transducer vibrator can be controlled by tightening torque in assembly process, to obtain better conformity of quality of transducer.
transducer vibrator tightening torque conformity resonance frequency impedance.
Jiaping Qiao Fuliang Wang
College of Mechanical and Electronical Engineering, Central South University Changsha, 410083, China
国际会议
西安
英文
893-896
2010-08-16（万方平台首次上网日期，不代表论文的发表时间）