Ultrasonic characterization of solid liquid suspensions

Details Ultrasonic characterization of solid liquid suspensions Ultrasonic characterization of solid liquid suspensions

G - Physics

01

N

G01N 29/032 (2006.01)

Patent

CA 2663457

Using an ultrasonic field, properties of a solid liquid suspension such as through-transmission attenuation, backscattering, and diffuse field are measured. These properties are converted to quantities indicating the strength of different loss mechanisms (such as absorption, single scattering and multiple scattering) among particles in the suspension. Such separation of the loss mechanisms can allow for direct comparison of the attenuating effects of the mechanisms. These comparisons can also indicate a model most likely to accurately characterize the suspension and can aid in determination of properties such as particle size, concentration, and density of the suspension.

Selon la présente invention, un champ ultrasonique est utilisé pour mesurer les propriétés d'une suspension de solides-liquides, dont l'atténuation de la transmission traversante, la diffusion arrière et le champ diffus. Ces propriétés sont converties en quantités indiquant la puissance des différents mécanismes de pertes (absorption, diffusion unique et la diffusion multiple) des particules de la suspension. Cette séparation des mécanismes de pertes permet une comparaison directe des effets atténuants des mécanismes, lesquelles comparaisons peuvent également indiquer le modèle le plus à même de caractériser la suspension avec précision, et faciliter la détermination de propriétés comme la taille des particules, la concentration et la densité de la suspension.

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