Determining y intercept of BH loop
Determining y intercept of BH loop
(OP)
Given an BH curve for a material, like low carbon steel, is it possible to predict how far into saturation you would need to go to produce a particular amount of residual flux density?





RE: Determining y intercept of BH loop
If you want something lower than the remanence, then things get a bit trickier. You need to know the permeability & magnetic history of the steel.
Can you give a bit more explanation of what you are looking for?
RE: Determining y intercept of BH loop
RE: Determining y intercept of BH loop
Depending on the geometry of the "toothed" wheel, you might be able to sufficiently magnetize the part by (carefully) pressing a rare-earth magnet onto the tooth.
RE: Determining y intercept of BH loop
So it doesn't matter how far into saturation you go to leave you with the remanence value? You must have to go a significant amount past the "knee" though, correct?
RE: Determining y intercept of BH loop
The only option I can think of is to magnetize the part, measure the magnetic output, then increase the magnetizing pulse by 10% (or some other, arbitrary value) to see if you get a higher reading. Keep increasing the magnetizing pulse until you see minimal to no increases in magnetic output on the steel. At that point, you can be reasonably sure the part was saturated.
RE: Determining y intercept of BH loop