DocumentCode :
189434
Title :
Parallel plates shear-wave transducers for the characterization of viscous and viscoelastic fluids
Author :
Abdallah, Ali ; Reichel, Erwin K. ; Heinisch, Martin ; Jakoby, Bernhard ; Voglhuber-Brunnmaier, Thomas
Author_Institution :
Inst. for Microelectron. & Microsensors, Johannes Kepler Univ., Linz, Austria
fYear :
2014
fDate :
2-5 Nov. 2014
Firstpage :
245
Lastpage :
248
Abstract :
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 in parallel and separated by a 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 upper plate, which is coupled to the lower plate with the viscous fluid in between, is recorded in a frequency range where resonances are observed. The coupling of both resonators increases with viscosity, allowing a, for resonator sensors unprecedented, high viscosity measurement range measured up to 17.1 Pa.s. In this contribution we will introduce the sensor concept, present an analytical model and discuss the results of measurements made with various fluids.
Keywords :
elastic waves; electrodynamics; electromagnetic actuators; non-Newtonian fluids; resonators; rheology; transducers; viscosity measurement; electrodynamic in-plane plate resonators; fluid sample; parallel plates shear wave transducers; resonator sensor; rheological applications; viscoelastic fluid; viscosity measurement; viscous fluids; Current measurement; Frequency measurement; Resonant frequency; Temperature measurement; Temperature sensors; Viscosity; high viscosity measurement; parallel plate shear wave transducers; resonating plate viscosity sensing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
SENSORS, 2014 IEEE
Conference_Location :
Valencia
Type :
conf
DOI :
10.1109/ICSENS.2014.6984979
Filename :
6984979
Link To Document :
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