Modal Analysis of Piezoelectric Materials Based on Scanning Laser Vibration Measurement

Piezoelectric material is a kind of intelligent material that can transform mechanical energy and electrical energy. It has formed a huge industry with a market scale of nearly 10 billion US dollars per year. Its application range is from mobile phones and other household electronic products to aerospace, naval sonar, high-speed trains and other fields. As one of the most widely used functional materials, piezoelectric materials are widely used because of their high chemical stability, convenient preparation process, low cost and good piezoelectric properties. Piezoelectric ceramics play an important role in daily life, not only widely used in civil life, but also in military devices. Therefore, the theoretical research on piezoelectric materials is more and more in-depth, and there are also great challenges in piezoelectric measurement. The modal analysis of piezoelectric materials is also the main research direction of piezoelectric materials, and also the main analysis direction to reflect the characteristics of piezoelectric materials. So we need the test data to provide theoretical support. Scanning laser vibration measurement is a perfect method to realize the device modal test. The non-contact laser measurement method and Doppler principle are used to measure the vibration frequency, amplitude, velocity and acceleration, so as to minimize the interference of the external environment and more accurately analyze the vibration mode of the measured object.