材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
振動粉体の流動挙動と粒子特性
荒川 正文
著者情報
ジャーナル フリー

1982 年 31 巻 348 号 p. 878-882

詳細
抄録

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.

著者関連情報
© 日本材料学会
前の記事 次の記事
feedback
Top