In-plane selective excitation of arbitrary vibration modes using thickness-shear (d ₁₅) piezoelectric transducers

Active Vibration Suppression of Smart Structures Using Piezoelectric Shear Actuators

Active Vibration Suppression of Sandwich Beams using Piezoelectric Shear Actuators

This paper deals with the experimental and numerical assessment of the vibration suppression of smart structures using piezoelectric shear actuators. Experimental results are presented for an adaptive sandwich cantilever beam that consists of aluminum facings and a core made of two piezoelectric shear actuators and foam. The electric Þeld is applied perpendicular to the poling direction of the ...

Radial-mode Vibration Characteristics of Piezoelectric Hollow-disc Transducers

The vibration characteristics of piezoelectric hollow-disc transducers were investigated in this paper. It was assumed that the vibration modes were coupled in the axial and radial directions. Theoretically the differential equations of piezoelectric motions were derived in terms of the axial and radial displacements and the electric potential. Solutions of the boundary value problem yielded th...

A survey of recent innovations in vibration damping and control using shunted piezoelectric transducers

Research on shunted piezoelectric transducers, performed mainly over the past decade, has generated new opportunities for control of vibration and damping in flexible structures. This is made possible by the strong electromechanical coupling associated with modern piezoelectric transducers. In vibration control applications, a piezoelectric transducer is bonded to, or embedded in a base structu...

Thickness mode high frequency MEMS piezoelectric micro ultrasound transducers

Thickness mode piezoelectric micro-electromechanical system (MEMS) ultrasound transducers, operating in the 50-75 MHz range, have been fabricated using a composite sol gel technique in combination with wet etching. The composite sol gel technique involves producing a PZT powder/sol composite slurry, which when spun down yields films a few micrometers thick. Repeated layering, and infiltration, ...