Parallel Plates Shear-Wave Transducers for the Characterization of Viscous and Viscoelastic Fluids
Sprache des Vortragstitels:
IEEE Sensors 2014
Sprache des Tagungstitel:
We present a novel sensor design for viscosity measurements using shear-waves which opens up opportunities for rheological applications in the low kHz range. Two electrodynamic in-plane plate resonators are aligned parallel and are separated by a well-defined gap filled with the fluid sample. The lower plate is actuated, generating a shear-wave in the viscous or viscoelastic fluid. The response on the second side is recorded in a frequency range where resonances are observed. The coupling of the two resonators increases with viscosity, yielding a, for resonator sensors unprecedented, high viscosity measurement range (measured up to 17.1 Pa.s). Analytical modeling and experimental results are presented.