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Physics
Classical Physics
Electromagnetism
Eddy Current Speedometer Experiment
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[QUOTE="Thomas Rugh, post: 6004443, member: 646392"] Trying to create an experiment that utilizes a motor driven shaft to measure the angular velocity of another shaft via eddy currents. We made a mock experiment that uses 8mm shafts, pillow bearings, and ceramic magnets from home depot, but don't see a torque on a non-ferrous metal attached to a staff. We tried using aluminum cans, copper coils wrapped around the diameter, and are about to try aluminum plating. The ceramic magnets have their poles orientated as seen in the diagram. The motor spins at 550 rpm, but we can't see the slightest torque being produced nor feel anything if we hold it by hand. Do we need thicker sheet metal, stronger magnets, geometry, and/or have the magnets closer? Are we overestimating the force that can be generated? Thanks in advanced. [ATTACH=full]226276[/ATTACH] [ATTACH=full]226277[/ATTACH] [ATTACH=full]226278[/ATTACH] [/QUOTE]
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Classical Physics
Electromagnetism
Eddy Current Speedometer Experiment
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