scholarly journals Influence of eddy effect of coils on convection and deformation of electromagnetically levitated droplet

Author(s):  
Lin Feng ◽  
Wan-Yuan Shi
1996 ◽  
Vol 8 (2) ◽  
pp. 370-383 ◽  
Author(s):  
Y. Bayazitoglu ◽  
U. B. R. Sathuvalli ◽  
P. V. R. Suryanarayana ◽  
G. F. Mitchell

Author(s):  
Bogdan O. Ciocirlan ◽  
Dan B. Marghitu ◽  
David G. Beale ◽  
Ruel A. Overfelt

Abstract In this paper, a nonlinear dynamics approach for analyzing the time evolution of an electromagnetically levitated droplet is proposed. The analysis was performed on the experimental data acquired from a levitation instrument developed by Space Power Institute at Auburn University. Several nonlinear dynamics tools were applied in order to reveal whether the time evolution of the droplet is deterministic (periodic, quasiperiodic or chaotic) or random. Quantities characterizing time series data such as the attractor dimension or the largest Lyapunov exponent were computed. It was mainly found that the underlying dynamics of the molten droplet is in fact chaotic.


2005 ◽  
Vol 26 (5) ◽  
pp. 1565-1581 ◽  
Author(s):  
S. R. Berry ◽  
R. W. Hyers ◽  
L. M. Racz ◽  
B. Abedian

Author(s):  
G. A. Bertero ◽  
W.H. Hofmeister ◽  
N.D. Evans ◽  
J.E. Wittig ◽  
R.J. Bayuzick

Rapid solidification of Ni-Nb alloys promotes the formation of amorphous structure. Preliminary results indicate promising elastic properties and high fracture strength for the metallic glass. Knowledge of the thermal stability of the amorphus alloy and the changes in properties with temperature is therefore of prime importance. In this work rapidly solidified Ni-Nb alloys were analyzed with transmission electron microscopy (TEM) during in-situ heating experiments and after isothermal annealing of bulk samples. Differential thermal analysis (DTA), scanning electron microscopy (SEM) and x-ray diffraction (XRD) techniques were also used to characterize both the solidification and devitrification sequences.Samples of Ni-44 at.% Nb were electromagnetically levitated, melted, and rapidly solidified by splatquenching between two copper chill plates. The resulting samples were 100 to 200 μm thick discs of 2 to 3 cm diameter. TEM specimens were either ion-milled or alternatively electropolished in a methanol-10% sulphuric acid solution at 20 V and −40°C.


2008 ◽  
Vol 29 (6) ◽  
pp. 2006-2014 ◽  
Author(s):  
Masayoshi Adachi ◽  
Tomowo Aoyagi ◽  
Akitoshi Mizuno ◽  
Masahito Watanabe ◽  
Hidekazu Kobatake ◽  
...  

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