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

Uncertainties in ultrasonic particle sizing in solid-in-liquid suspensions
Uncertainties in ultrasonic particle sizing in solid-in-liquid suspensions
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 1µm) silica particles dispersed in water. The results will have more general application.
0885-3010
1835-1845
Al-Lashi, Raied S.
0d183a88-9ee8-4643-8fe8-2273e2917689
Challis, Richard E.
7cbb27b9-23e0-42f8-a8a6-bcb94830e9c5
Al-Lashi, Raied S.
0d183a88-9ee8-4643-8fe8-2273e2917689
Challis, Richard E.
7cbb27b9-23e0-42f8-a8a6-bcb94830e9c5

Al-Lashi, Raied S. and Challis, Richard E. (2014) Uncertainties in ultrasonic particle sizing in solid-in-liquid suspensions. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 61 (11), 1835-1845. (doi:10.1109/TUFFC.2013.006171).

Record type: Article

Abstract

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 1µm) silica particles dispersed in water. The results will have more general application.

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Uncertainties in Ultrasonic Particle Sizing in Solid in Liquid Suspensions.pdf - Accepted Manuscript
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Published date: November 2014
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 373107
URI: https://eprints.soton.ac.uk/id/eprint/373107
ISSN: 0885-3010
PURE UUID: 04285505-78e3-41a6-8a18-250cbc653523

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Date deposited: 06 Jan 2015 15:40
Last modified: 19 Jul 2019 20:54

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