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http://dx.doi.org/10.7234/composres.2021.34.5.330

Analysis of Powder Packing for Alumina Using Design of Experiment with Mixture and Vibration  

Jeon, Sangjun (Department of Future Convergence Engineering, Kongju National University)
Kim, Youngshin (Industrial Technology Research Institute, Kongju National University)
Yang, Daejong (Department of Future Convergence Engineering, Kongju National University)
Publication Information
Composites Research / v.34, no.5, 2021 , pp. 330-336 More about this Journal
Abstract
Alumina powder is one of the widely used materials for industry, but there is a problem that the strength of the product changes depending on the powder packing state. To solve the above problem, previous studies have been conducted to increase the particle packing efficiency, but most of the existing studies analyzed the packing characteristics of millimeter-scale particles, so the physical properties are different from those of the micrometer scale. It is difficult to apply to the micrometer scale. In this paper, a three-step experiment was performed using a statistical method to increase packing using micrometer-scale alumina powder. First, a size combination with high packing and a mixing ratio were selected using the mixture test design method, and an appropriate excitation frequency was selected by analyzing the height change according to the frequency change in the vibration test apparatus. Finally, an alumina powder packing experiment was performed based on the experimental results mentioned above. As a result, it was confirmed that the maximum height variation was 42% higher than the maximum value of the 155 measurements performed when selecting the packing size combination. It is thought that this study will serve as basic data for processing and packing research using fine powder.
Keywords
Packing characteristics; Mixture experiment design; Size combination; Vibration condition; Mixing ratio;
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