Parallel Piezoelectric Shunt Damping of Rotationally Periodic Structures

Figure 11

Experimental setup: bladed drum with 76 blades equipped with 28 PZT patches glued on the inner side of the drum. 28 independent gyrator circuits are used to provide synthetic inductors. 76 small permanent magnets are glued at the tip of the blades and 38 of them are used with (noncontact) voice coil actuators to provide a wide range of excitations to the structure.