MECHANICAL RESPONSE IN AN N-ELECTRODE PIEZO-QUARTZ BAR UNDER ELECTRICAL AND THERMAL EXCITATIONS

The mechanical response in an N-electrode piezo-quartz bar where two consecutive electrodes are separated by an unelectroded region has been studied under electrical and thermal excitations. The bar is subjected to a periodic polarization gradient and a constant flow of heat. The method of operational calculus and Green's function has been used to solve the problem. For time scale ranging from 0.1 to 1.0 s the response becomes a linear function of time and is of the order of 10(-8) m.