Macri, D;
Chirone, R;
Salehi, H;
Sofia, D;
Materazzi, M;
Barletta, D;
Lettieri, P;
(2020)
Characterization of the Bulk Flow Properties of Industrial Powders from Shear Tests.
Processes
, 8
(5)
, Article 540. 10.3390/pr8050540.
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Abstract
Bulk flow properties from shear analysis of compacted powders can be evaluated following different approaches. Experimental values of shear stresses obtained by conventional shear cells are traditionally used to build yield loci, from which the most relevant flow properties could be found. Such flow properties play an important role in determining their performance under fluidization conditions. In this work, a useful app, named cYield, was developed by using the new Matlab’s App Developer environment. This tool enables users to calculate both linear (Coulomb) and non-linear (Warren–Spring) yield loci as the best fitting of the σ-τ experimental shear points. It also provides a wide range of statistical information related to the quality of the outcomes obtained. The different features of the tool are presented, and the crucial steps for the execution of its calculations are illustrated. Moreover, it has been applied for the yield loci analysis of four different materials traditionally used in manufacturing processes. The results confirm that the flow behavior of many industrial powders, especially if cohesive, is better described by a non-linear yield locus.
| Type: | Article |
|---|---|
| Title: | Characterization of the Bulk Flow Properties of Industrial Powders from Shear Tests |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/pr8050540 |
| Publisher version: | https://doi.org/10.3390/pr8050540 |
| Language: | English |
| Additional information: | © 2020 by the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | powder characterization; flowability; Matlab App; yield locus; tensile strength |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10097819 |
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