In this study the relation between output voltages of PZT piezoelectric ceramic body with applied impact mechanical energy are studies. The output voltages of PZT piezoelectric ceramic body are increased with the increasing of the applied mechanical energy. Under the same impact mechanical energy, the output voltages of the PZT piezoelectric ceramic body are depending on both the dimensional size and properties of the samples. The PZT piezoelectric ceramic body with greater (t/D 2 ) can produce a higher output voltage. With the same piezoelectric ceramic body size, under the same impact mechanical energy, the output voltage of soft type piezoelectric ceramic body is higher than that of hard type piezoelectric ceramic body, which is because the g 33 value of soft type piezoelectric ceramic body is higher than that of hard type piezoelectric ceramic body.
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