Effects of Vibration Stress and Temperature on the Characteristics of Piezoelectric Ceramics under High Vibration Amplitude Levels Measured by Electrical Transient Responses

This paper presents a characteristic evaluation of piezoelectric ceramics at high vibration amplitude levels of resonance, based on the electrical transient response technique. Low- Q and high- Q materials are measured, and the effect of vibration stress is obtained without affecting temperature. It is revealed that for low- Q materials an increase of loss is caused mainly by the vibration stress, while for high- Q materials, it is caused by both the vibration stress and the temperature increase. The results show that in some high- Q materials, it is meaningless to evaluate the piezoelectric materials at low vibration level, since the characteristics change variously at high vibration levels. The force factor is changed mainly by the temperature, although its behavior is different, depending on material composition.