Browse > Article

Design of ceramics powder compaction process parameters (Part Ⅱ : Optimization)  

Kim J. L. (Department of Precision Mechanical Engineering, Graduate School in Hanyang University)
Keum Y. T. (Division of Mechanical Engineering, Hanyang University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.15, no.1, 2005 , pp. 27-33 More about this Journal
Abstract
In this study, the process parameters in ceramics powder compaction are optimized for getting high relative densities of ceramic products. To find optimized parameters, the analytic models of powder compaction are firstly prepared by 2-dimensional rod arrays with random green densities using a quasi-random multiparticle array. Then, using finite element method, the changes in relative densities are analyzed by varying the size of Al₂O₃ particle, the amplitude of cyclic compaction, and the coefficient of friction, which influence the relative density in cyclic compactions. After the analytic function of relative density associated process parameters are formulated by aid of the response surface method, the optimal conditions in powder compaction process are found by the grid search method. When the particle size of Al₂O₃ is 22.5 ㎛, the optimal parameters for the amplitude of cyclic compaction and the coefficient of friction are 75 MPa and 0.1103, respectively. The maximum relative density is 0.9390.
Keywords
Ceramics powder compaction; Optimization; Response surface method; Cyclic pressure; Finite element analysis;
Citations & Related Records
연도 인용수 순위
  • Reference
1 G. Jiang, G.S. Daehn, J.J. Lannutti, Y. Fu and R.H. Wagoner, 'Effects of lubrication and aspect ratio on the consolidation of metal matrix composite under cyclic pressure', Acta Mater 49 (2001) 1417
2 G. Jiang, G.S. Daehn and R.H. Wagoner, 'Inclusion particle size on the cyclic compaction of powder composites', Scripta Mater 44 (2001) 1117   DOI   ScienceOn
3 D.W. Shin, G.D. Kim, S.S. Park, C.S. Lim and S.W. Lee, 'Optimization of powder compaction parameters for the pressureless sintered ZTA', Journal of Korean Association of Crystal Growth 8(2) (1998) 356
4 G.E.P. Box and K.B. Wilson, 'On the experimental attainment of optimum condition', Journal of the Royal Statistical Society, Series B 13 (1951) 1
5 W.J. Roux, N. Stander and R.T. Haftka, 'Response surface approximations for structural optimization', Int. J. Number. Meth. Engng. 42 (1998) 517   DOI   ScienceOn
6 K.T. Kim, G.S. Son and J. Suh, 'Densification of aggregated alumina powder under cyclic compaction', Journal of Korean Ceramic Society 29(2) (1992) 136
7 S.H. Park, Moderm Method of Experiment, Minyoung Ltd. (1991)
8 B.J. Briscoe and S.L Rough, 'The effect of wall friction on the ejection of pressed ceramic parts', Powder Technology 99 (1998) 228   DOI   ScienceOn
9 S.C. Jung and Y.T. Keum 'Design of ceramics powder compaction process parameters (part I : finite element analysis)', Journal of the Korean Crystal Growth and Crystal Technology, Submitted
10 S. Turenne and P.E. Mongeon, 'Comparison of the properties of aluminum matrix composites produced by compaction and powder injection molding', Advances in powder metallurgy & particulate materials (1995) 155
11 G. Venter and R.T. Haftka, 'Construction of response surface approximations for design optimization', AIAA Journal 36(12) (1998) 2242   DOI   ScienceOn
12 C.M. Kong and J.J. Lannutti, 'Effect of agglomerate size distribution on loose packing fraction', Journal of the American Ceramic Society 83(9) (2000) 2183   DOI   ScienceOn