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Material compatability - Lines of flux

Material compatability - Lines of flux

(OP)
Hi,

I am current working on generating power by placing magnetic blades inside a metal shaft, when the blades rotates the lines of flux should induce emf on the coil wrapped on the outer surface of the metal shaft.
My concern is will metal shaft (aluminum or steel) allow lines flux to induce coil, or the shaft should be made of plastic material.

Any help will be greatly appreciated

Thanks in advance

Darshan

RE: Material compatability - Lines of flux

Metallic shafts (aluminum or steel) will work against you. Use a plastic material.

Can you describe more about what this is supposed to do?

RE: Material compatability - Lines of flux

(OP)
Thks Mike.
I am trying to generate power inside liquid flow path, & I have high pressure liquid acting on this shaft, that's the reason it should be metallic.
Any chance of using Iron to transmit magnetic flux?

RE: Material compatability - Lines of flux

Austenitic steel, but a detailed check is required, as some ferrite will still be there, especially in welds, and some electrical conductivity also is present.

prex
http://www.xcalcs.com : Online engineering calculations
http://www.megamag.it : Magnetic brakes and launchers for fun rides
http://www.levitans.com : Air bearing pads

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