Wave propagation in a nonlocal rotating micropolar piezoelectric solid

The nonlocal theory of elasticity is applied to formulate the governing equations of nonlocal micropolar piezoelectric material in a rotating frame. The governing equations are specialized for a plane and solved to show the existence of three coupled plane waves. Reflection of a coupled longitudinal displacement wave is considered at a stress-free surface of half-space containing the micropolar piezoelectric material. For the incidence of coupled longitudinal displacement waves, the expressions of reflection coefficients and energy ratios for reflected waves are derived. A quantitative example is set up to illustrate the effects of rotation and nonlocal parameters on the reflection coefficients and energy ratios in a given range of the angle of incidence.