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Rate of shear of an ultrasonic oscillating rod viscosity probe
journal contribution
posted on 2015-10-06, 11:12 authored by Amir Rabani, Valerie PinfieldValerie Pinfield, Richard E. ChallisUltrasonic oscillating rod probes have recently been used by researchers to measure viscosity and/or density in fluids. However, in order to use such probes to characterise the rheological properties of fluids, it is necessary to define the shear rate produced by the probe. This paper proposes an analytical solution to estimate the shear rate of ultrasonic oscillating rod viscosity probes and a method to measure their maximum operational shear rate. A relationship is developed which relates the torsional surface velocity of an oscillating cylindrical rigid body to the rate of shear in its vicinity. The surface displacement and torsional surface velocity of a torsional probe of length 1000 mm and diameter 1 mm were measured over the frequency range from 525 to 700 kHz using a laser interferometer and the maximum shear rate estimated. The reported work provides the basis for characterising shear rate for such probes, enabling their application for rheological investigations.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
UltrasonicsVolume
AcceptedCitation
RABANI, A., PINFIELD, V.J. and CHALLIS, R.E., 2016. Rate of shear of an ultrasonic oscillating rod viscosity probe. Ultrasonics, 6, pp.18-22Publisher
© 2015 The Authors. Published by Elsevier B.V.Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Publication date
2016Notes
This paper was published as Open Access by Elsevier and is licensed under a Creative Commons Attribution 4.0 License. For more information, see http://creativecommons.org/licenses/by/4.0/ISSN
0041-624XPublisher version
Language
- en