振動粉体の流動挙動と粒子特性(<小特集>粉体小特集)

概要

論文の詳細を見る
The flow properties of various powders in a vibrating field have been measured by a rotating cylinder fluidity meter. The shear stress-rate of strain diagram obtained by the fluidity meter exhibits typical three types corresponding to the powder characteristics. These diagram have been discussed on the bases of the particle size, the interparticle force and the aggromeration phenomena of particles under fluidization. The interparticle force of the aggromerate was obtained by an apparatus for direct compressive strength measurement. In a low amplitude region, the fluidity of powders is influenced by their packing structure. But, at high amplitudes, especially the fine powders begin to aggregate, giving rise to a decrease in the number of particles in the fluidized bed. Therefore, the fluidity of the powder increases in this region and exhibits a hysteresis on the shear stress-rate of strain diagram.
社団法人日本材料学会の論文
1982-09-15