NASA NTRS · 19920041113
A hybrid electromagnetic-acoustic levitator for the containerless processing of undercooled melts
Abstract
The hybrid, acoustic-EM levitator discussed provides a small lifting force independently of its EM component by exciting an acoustic resonance that serves as a pressure node at the position of the EM-levitated specimen. The system also stabilizes and damps chaotic oscillations during specimen positioning, and can excite forced oscillations of levitated molten metals for drop-physics and thermophysical property measurements. Attention is given to the character and function of the atmosphere in the levitator. Noncontact temperature measurement is via single-color optical pyrometer.
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Hmelo, Anthony B., Banerjee, Sharbari, Wang, Taylor G.. 1992-01-01. A hybrid electromagnetic-acoustic levitator for the containerless processing of undercooled melts. https://ntrs.nasa.gov/citations/19920041113
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