Propagation of Lamb waves generated by the angle beam wedge actuator in the plastic panel

Abstract

This study presents some results of the experimental and numerical investigations on the generation of Lamb waves using a piezoelectric angle beam actuator with wedge. The experiments were carried out on isotropic plastic panel. Experimental study was performed using the Olympus V414-SB angle beam transducer. For the numerical part of the current research, the finite element models were developed and analyzed. A preliminary calculated dispersion curves for studied material allowed to identify the types of waves generated in the plate under consideration. The complex dependencies of the generated wave’s directivity on the excitation frequency were established. The obtained results allow the purposeful use of angle beam transducers, providing a large scanning index.This study presents some results of the experimental and numerical investigations on the generation of Lamb waves using a piezoelectric angle beam actuator with wedge. The experiments were carried out on isotropic plastic panel. Experimental study was performed using the Olympus V414-SB angle beam transducer. For the numerical part of the current research, the finite element models were developed and analyzed. A preliminary calculated dispersion curves for studied material allowed to identify the types of waves generated in the plate under consideration. The complex dependencies of the generated wave’s directivity on the excitation frequency were established. The obtained results allow the purposeful use of angle beam transducers, providing a large scanning index.