Evaluation on vibrocompaction fuel core system (part 1) - Effect of amplitude, size ratio and shape of multi-size powders on vibratory compacting

In order to increase homogeneity with a higher packing density of vibrocomp action fuel, we investigated the effect of size ratio and shape of multi-si ze powders on vibratory compacting, and the size segregation phenomenon whi ch commonly occurs with vibratory compacting. Spherical glass beads and irr egular glass particles were used in the present vibratory compacting, We pr opose a segregation model that expresses the relation between size segregat ion, size ratio and amplitude, Under the shaking condition of this study, o ur model well agreed with the experimental results, Before and after shakin g, compacting behavior of the samples were observed by X-ray computed tomog raphy (X-ray CT).