Composites with Piezoceramic Fibers and Interdigitated Electrodes in Vibration Control

The study concerns active suppression of structural vibrations of laminated plates. The configuration of the proposed control device is based on the piezoceramic fiber composite layers equipped with the interdigitated electrodes and used as actuators and sensors. This type of hybrid composites with the poling direction along the fibers offers an increase of the predominant unidirectional actuation effect and also the orthotropy of electromechanical properties comparing with the traditional piezoceramic fiber composites. The effective composite properties are obtained due to the uniform field method by combining the material phases properties according to the rules of mixtures. The steady-state behavior of the actively damped laminated plate is analyzed. The governing equations are formulated for a non-zero skew angle between the natural axes of the piezoelectric composite materiał and the plate reference axes. The numerical simulations are focused on the influence of the piezoceramic arrangement on the control potential of the considered system.