Over deze norm
This standard describes ultrasonic attenuation spectroscopy methods for determining the size distributions of one or more material phases dispersed in a liquid at high concentrations, where the ultrasonic attenuation spectrum is not a linear function of the particle volume fraction. In this regime particle-particle interactions are not negligible. Colloids, dispersions, slurries, and emulsions are within the scope of this standard. The typical particle size for such analysis ranges from 10 nm to 3 mm, although particles outside this range have also been successfully measured. Measurements can be made for concentrations of the dispersed phase ranging from about 5 % by volume to over 50 % by volume, depending on the density contrast between the continuous and the dispersed phases, the particle size, and the frequency range,. These ultrasonic methods can be used to monitor dynamic changes in the size distribution, including agglomeration or flocculation.
||Deeltjeskarakterisering door akoestische methoden - Deel 3: Richtlijnen voor niet-lineaire theorie
||Measurement and characterization of particles by acoustic methods - Part 3: Guidelines for non-linear theory