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At high frequencies (a few tens of kilohertz or so) and kilowatt powers small quantities of metals can be levitated and melted using levitation melting without the risk of the metal being contaminated by the crucible. [14] One source of oscillating magnetic field that is used is the linear induction motor. This can be used to levitate as well ...
A magnetic bearing. A magnetic bearing is a type of bearing that supports a load using magnetic levitation. Magnetic bearings support moving parts without physical contact. For instance, they are able to levitate a rotating shaft and permit relative motion with very low friction and no mechanical wear. Magnetic bearings support the highest ...
An active magnetic bearing (AMB) works on the principle of electromagnetic suspension and consists of an electromagnet assembly, a set of power amplifiers which supply current to the electromagnets, a controller, and gap sensors with associated electronics to provide the feedback required to control the position of the rotor within the gap ...
In the 1950s, a technique was developed where small quantities of metal were levitated and melted by a magnetic field of a few tens of kHz. The coil was a metal pipe, allowing coolant to be circulated through it. The overall form was generally conical, with a flat top. This permitted an inert atmosphere to be employed, and was commercially ...
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Clemson coach Dabo Swinney made his case for SMU in his postgame interview with ESPN's Molly McGrath. “That’s a playoff football team," Swinney said as he pointed across the field.
A Republican senator has blocked the promotion of a general who oversaw the US withdrawal from Afghanistan, according to a source familiar with the matter, as President-elect Donald Trump has ...
A magnetically levitated (maglev) train departing Shanghai Pudong International Airport on the first commercial high-speed maglev line in the world. Magnetic levitation is in development for use for transportation systems. For example, the Maglev includes trains that are levitated by a large number of magnets. Due to the lack of friction on the ...
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