Experiment and Calculation of Output Current of Ferroelectric Ceramics in Parallel Connection Loaded by Shock Waves

To analyze the characters of out current of different number ferroelectric ceramics, the tests of PZT95/5 ferroelectric ceramics in parallel connection loaded by the shock waves were carried out. The output currents of ferroelectric ceramics for the resistance loads were measured. A model calculating the output current of ferroelectric blocks in parallel connection was developed. The currents under different number of ferroelectric blocks were calculated numerically with this model. By comparing the calculated results and experimental results, the effects of the number of ferroelectric and shock wave on output of current were analyzed. The results indicated that if the planar shock waves load the ferroelectric blocks, the shape of the output current will be quadrate and the current will increase along with the number of the ferroelectric blocks increasing. The shape of shock waves and the sparse waves influence on the output current and the depolarization ratio.