Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10409301 | Sensors and Actuators A: Physical | 2011 | 7 Pages |
Abstract
Vibrating microcantilevers are used to measure the density and the viscosity of surrounding fluids. The classical procedure involves experimental acquisition of the deflection spectrum of the beam, but a systematic calibration step is mandatory for obtaining viscosity and density. In the present study, a method is proposed to facilitate these measurements for Newtonian fluids with only one calibration step in air during the cantilever lifetime. Our approach relies on a complete theoretical analysis allowing to approximate semi-analytically the deflection spectrum with a second-order transfer function and to determine an analytical relationship between viscosity, density and the parameters of the transfer function. Fluid parameter determination results are shown for validation and discussed.
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Authors
M. Youssry, N. Belmiloud, B. Caillard, C. Ayela, C. Pellet, I. Dufour,