Investigation on Multi-piezoelectric Effect of Piezoelectric Ceramic Under Loads

The process of multi-piezoelectric effect generation is analyzed.Through the method of finite element analysis,the results of multi-piezoelectric effect of the piezoelectric ceramics under applied force are obtained.Experimental research of secondary and tertiary piezoelectric effect starting from the direct piezoelectric effect is performed through PZT-5 stack.The signals of secondary converse piezoelectric effect and tertiary direct piezoelectric effect are decoupled and separated by changing boundary conditions of PZT-5 stack.The experimental data shows that the output of secondary converse piezoelectric effect and tertiary direct piezoelectric effect is linear with the applied force.