The Role of PZT in Flexible 1-3 Piezoelectric Composite for Smart Structure

摘要

Piezoelectric composite materials have the ability to perform both sensing and actuating functions. It is a viable candidate for smart actuation in underwater noise controlling with its higher coupling factor and lower acoustic impedance, when the piezoelectric rods are inclined to control its both the shear and the compression damping characteristics. In this paper, a simple physical model of 1-3 piezoelectric composite is advanced for maximizing the electromechanical coupling factor, the acoustic impedance, and the hydrophone figure of merit.