Abstract
Acoustic levitation for containerless materials processing has been investigated for use in the 1‐g environment. Enhancements have been obtained by increasing the gas pressure of the acoustic levitation system. Interdependence of gas pressure, sound pressure level, acoustic positioning force, and gas temperature has been measured. Also, nonlinear acoustic effects and harmonic content within the acoustic field are examined as a function of pressure. Finally, results of 1‐g acoustic levitation experiments utilizing increased gas pressures are presented. [Work supported by NASA.]
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