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물리적 모델링을 이용한 알루미늄 발포공정 영향 인자 해석
옥성민,문영훈 한국소성가공학회 2001 소성가공 : 한국소성가공학회지 Vol.10 No.7
An experimental modeling is applied to investigate the formation of forms in molten aluminum By using a specially designed equipment, the effect of process variables, such as the shape of stirrer, stirring velocity and fluid viscosity, on the formation of foams were studied in the glycerine added water. Bubbles formed in water had various diameter from 1 to 10 mm and the number of bubbles was 0 to 20/$cm^2$. It turned out that among various variables the stirring velocity and fluid viscosity played important roles on the formation of bubbles. The results obtained from the model experiment were preyed to be convincible also in the real aluminum foam.
옥성민(S.M. Oak),문영훈(Y.H. Moon) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.10
There is increasing interest in the use of metallic foam in a variety of applications, including lightweight structural panels, energy absorbtion devices and environmental recycling. In such applications, Structure of foamed aluminum is of critical importance. In this study, The effects of various parameters on the behavior of foamed aluminum has been investigated. Parametric analysis give a good description on the foaming behavior of molten aluminum
김원태(W. T. Kim),옥성민(S. M. Oak),문영훈(Y. H. Moon) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.4
The effects of the stirring velocity, fluid viscosity, stirring height and stirrer's size on molten aluminum foam generation process are intensively analysed by the physical modeling with specially designed equipment. The number, distribution and size of bubbles varied with process parameters but the most important parameters are stirring velocity and fluid viscosity. The results obtained from physical modeling have been confirmed by actual aluminum foam genetration experiments at the similarity of process factors.