Vibrational Waves in a Thick Infinite Plate of Piezoelectric Crystal

Vibrational waves in an infinite piezoelectric plate bounded by two planes of symmetry are investigated. The surfaces of the plate are kept traction free and are completely coated with electrodes, which are shorted. The lowest symmetric and antisymmetric wave modes are discussed. Both types of mode change to surface modes whenever surface modes are possible along the direction of propagation. The waves propagating in the (1,0,0) direction of a cadmium selenide crystal have been analyzed numerically. © 1968, Acoustical Society of America. All rights reserved.