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Magnetic field "penetration depth"

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LAN_403

Dr. Dark Current

Mon Jun 30 2014, 08:45PM

Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384

Let's say you have an object inside an alternating magnetic field, such as in an induction heater.
Will the penetration depth of the magnetic field into the heated object be the same as the skin depth of eddy currents? And can the skin depth be calculated using the basic skin depth formula?

Thanks

BigBad

Mon Jun 30 2014, 08:54PM

Registered Member #2529 Joined: Thu Dec 10 2009, 02:43AM
Location:
Posts: 600

Yeah, for convex/flat objects it's pretty much just skin depth.

But if you've got some concave geometry you should run FEMM on it, eddy currents seem to find concave bits beneath them somehow.

Dr. Dark Current

Mon Jun 30 2014, 09:48PM

Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384

Just wanted to know if I have the basic idea correct. Thanks

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