Quantitative investigation of powder flow during die filling using positron emission particle tracking
Wu, C-Y, Fan, X. F., Motazedian, F., Seville, J. P. K. (Jonathan P. K.), Parker, D. J. and Cocks, A. C. F.. (2010) Quantitative investigation of powder flow during die filling using positron emission particle tracking. Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, Vol.224 (No.3). pp. 169-175. ISSN 0954-4089Full text not available from this repository.
Official URL: http://dx.doi.org/10.1243/09544089JPME303
The flow behaviour of powders during die filling was investigated using the positron emission particle tracking (PEPT) technique, from which quantitative information on the flow of individual particles was obtained. Two grades of spherical microcrystalline cellulose powders with different particle sizes were used as the model powder systems. It is shown that the trajectories of tracked particles at different initial positions are consistent with the overall flow patterns observed using a high-speed video system and linear kinematics (i.e. displacement and velocity) of the tracked particles in the moving direction of the feed shoe correspond very well with the specified shoe motion. Furthermore, a close examination of the vertical velocity component (i.e. in the gravitational direction) of the tracked particles that were deposited into the die reveals that for the system with large particles, the particles flow into the die at a higher falling velocity, compared to the system with small particles. This is primarily due to the effect of the presence of air in the die, which can significantly inhibit the flow of small particles, while its effect on the flow of large particles is small.
|Item Type:||Journal Article|
|Subjects:||T Technology > TJ Mechanical engineering and machinery|
|Divisions:||Faculty of Science > Engineering|
|Journal or Publication Title:||Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering|
|Publisher:||Sage Publications Ltd.|
|Official Date:||1 August 2010|
|Number of Pages:||7|
|Page Range:||pp. 169-175|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Engineering and Physical Sciences Research Council (EPSRC)|
|Grant number:||EP/C545230 (EPSRC), EP/C545249 (EPSRC)|
Actions (login required)