Uncertainties in ultrasonic particle sizing in solid-in-liquid suspensions

Al-Lashi, R.S. ORCID: 0000-0002-7775-8181 and Challis, R.E., 2014. Uncertainties in ultrasonic particle sizing in solid-in-liquid suspensions. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 61 (11), pp. 1835-1845. ISSN 0885-3010

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Measurements of the frequency dependence of ultrasonic attenuation can be used as the basis for the estimation of particle size distributions (PSDs) in solid-in-liquid suspensions. The method requires matching the attenuation simulated by a candidate PSD in combination with a wave propagation model to the measured function in a fitting procedure. Uncertainty in the type of candidate PSD, whether based on fractional volume or fractional number of the dispersed particles, can cause errors in the overall estimation process, particularly for the median particle size. These uncertainties are investigated in the first part of this paper. The second part deals with uncertainties associated with the values for the physical properties of the suspended particles, seven of which are required in the simulation stage. It is shown that the particle sizing exercise is relatively insensitive to all of the physical properties except density, for which values are necessary to an accuracy commensurable with that required for the two principal parameters associated with the PSD – median size and standard deviation. The discussion is limited to small (less than 1 micron) silica particles dispersed in water. The results will have more general application.

Item Type: Journal article
Publication Title: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Creators: Al-Lashi, R.S. and Challis, R.E.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: November 2014
Volume: 61
Number: 11
ISSN: 0885-3010
Divisions: Schools > School of Science and Technology
Record created by: Linda Sullivan
Date Added: 14 Mar 2018 12:56
Last Modified: 14 Mar 2018 12:56
URI: https://irep.ntu.ac.uk/id/eprint/32975

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