A consideration of ultrasonic imaging method using vibration velocity in air

When a piezoelectric transducer is excited by the constant voltage drive, an arbitrary vibration velocity can be obtained. A novel ultrasonic imaging method in air detected the vibration velocity by the Doppler Vibrometer is suggested. By applying the cycloid function voltage to the piezoelectric transducer, monopole pulse velocity is generated. Using this wave, the imaging of the aluminum plate having the characters “U.S” can be available.