Acoustic wave viscometer

Abstract

This article presents an acoustic wave viscometer using shear bulk waves excited by interdigital transducers on quartz. The attenuation of acoustic waves at the quartz-liquid interface is associated with liquid viscosity. Good agreement is found between theoretical results and experiments. The device can be used for viscosity measurements up to 600 cP. For higher viscosity the high-frequency rigidity modulus must be taken into account.