Fig. 1. Piezoelectric ceramic displacement test system and the test curve

Fig. 2. Capacitance and impedance curve of piezoelectric ceramics

Fig. 3. Thermal expansion coefficient test curve

Fig. 4. Tensile test and test curves

Fig. 5. Fatigue test structure of the piezoelectric ceramic

Fig. 6. Clamping mode of test pieces

Fig. 7. ±150 N@10 Hz sinusoidal load curve and deformation curve of piezoelectric ceramics

Fig. 8. ±150 N@10 Hz output voltage curve of piezoelectric ceramics under sinusoidal load （positive piezoelectric effect curve）

Fig. 9. Sinusoidal load curve and maximum/minimum deformation curve of piezoelectric ceramics

Fig. 10. Deviation and zero clearing curve of piezoelectric ceramics

Fig. 11. Displacement and deformation curve of piezoelectric ceramics during 10 million fatigue tests