The influence of external tensile stress on surface elastic waves on piezoelectric ceramic plates

Piezoelectricity

“…The conditions under which surface wave solutions are possible for velocities below the critical velocity were found for the following cases: a mechanically free surface and zero dielectric constant for adjoining medium; a mechanically free surface and an infinitely conducting adjoining medium; and, a mechanically clamped surface with the same two types of adjoining media. Experimental results on the output voltage via a propagating surface elastic wave and the convolution output of two oppositely propagating surface elastic waves on a piezoelectric ceramic as functions of external tensile stress were described by Toda (182,183). The convolution output increased with the cumulative load, while the output voltage via the surface elastic wave decreased.…”