Actas de congresos
P3L-3 Viscosity measurement of Newtonian liquids using the complex reflection coefficient
Proceedings - IEEE Ultrasonics Symposium, v. 1, p. 2257-2260.
Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
This work presents the implementation of the ultrasonic shear reflectance method for viscosity measurement of Newtonian liquids using wave mode conversion from longitudinal to shear waves and vice-versa. The method is based on measuring the complex reflection coefficient (magnitude and phase) at a solid-liquid interface. Viscosity measurements were made in the range from 1 to 3.5MHz at 22.5°C for automotive oil (SAE40) and at 15°C for olive oil. Moreover, measurements of the olive oil were also conducted in the range from 15 to 30°C at 3.5MHz. The experimental results agree with those provided by a rotational viscometer. © 2006 IEEE.
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Filho, Gérson Pereira