Abstract
ABSTRACT Using Servo Testing Machine and Split Hopkinson Pressure Bar measurement device, an experimental study on the electro-mechanical characteristics of PZT5H piezoelectric ceramics under quasi-static and impact loading are carried out. The electromechanical response characteristics of PZT5H under impact load is analyzed emphatically. Results showed that under the condition of static compression and the same maximum loading stress, PZT5H piezoelectric ceramics in the same strain and displacement, the stress value increases with the increase of loading stress rate. Under impact load and the same load, the electric displacement of PZT5H piezoelectric ceramics increases with the increase of strain rate, and the corresponding stress value of the same strain increases with the increase of strain rate. When the strain rate is less than 208/s, the response time of PZT5H piezoelectric ceramics decreases with the increase of strain rate, the failure of electric displacement increases with the increase of strain rate under impact loading.
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