Abstract
This chapter describes the ultrasonic experimental apparatus and its application to measure the viscosity at an aluminium-oil boundary. The conventional reflectance set-up is made of a pair of ultrasonic transducers that are bonded on the top of an aluminium block in contact with a thin layer of lubricant oil. The reflection coefficient is acquired when the oil is heated up and the viscosity is calculated using the Eqs. (4.9, 4.15 and 5.14). Finally, the results are compared with the reading from a conventional cone-on-plate viscometer.
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References
E.E. Franco, J.C. Adamowski, F. Buiochi, Ultrasonic viscosity measurement using the shear wave reflection coefficient with a novel signal processing technique. IEEE Trans. Ultrason. Ferroelectr. Freq. Control 57(5), 1133–1139 (2010)
S.H. Sheen, H.T. Chien, A.C. Raptis, Method for measuring liquid viscosity and ultrasonic viscometer, US Patent Number 5365778, 1994
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Schirru, M. (2017). Viscosity Measurements at an Aluminium-Oil Boundary. In: Development of an Ultrasonic Sensing Technique to Measure Lubricant Viscosity in Engine Journal Bearing In-Situ. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-53408-4_6
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DOI: https://doi.org/10.1007/978-3-319-53408-4_6
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Online ISBN: 978-3-319-53408-4
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