Effect of a biasing electric field on the propagation of antisymmetric Lamb waves in piezoelectric plates (Q1858681)

By solving coupled differential equations of motion under a biasing electric field, the authors derive phase velocity equations of antisymmetric Lamb wave modes for electrically open and shorted cases. The beating effect arising from the difference between phase velocities of zero-order symmetric mode and antisymmetric mode exists in the plate when the plate has a thickness comparable to or slightly larger than the wavelength.