Magnetic flux degaussing calculations.

[solar71]

Hey guys.

Ok so here goes.
I want to know if there is a way to calculate the flux field degaussing effect of two magnets passing by each other in repelling configuration. Like south to south.
Lets say I have two magnets of neodymium N52 grade. Rockwell C scale hardness of 46.
Also let's say the surface gauss of each magnet is 6,000.
These two magnets pass each other once per second. With a distance of 1/8th of an inch between them. Is there a way to calculate how long it will take to degauss either of these magnets to 50% strength?

Can someone help me with at least a rough estimate?

Thanks guys

 

[eljose79]

.

Hello, thank you for your question. The degaussing effect of two magnets passing by each other in repelling configuration can be calculated using the following equation:

F = (µ0 * m1 * m2 * v) / (4 * π * d^2)

Where F is the flux field degaussing effect, µ0 is the permeability of free space (4 * π * 10^-7), m1 and m2 are the magnetic moments of the two magnets, v is the relative velocity between the magnets, and d is the distance between the magnets.

In this case, the magnetic moment can be calculated using the following equation:

m = µ0 * M

Where m is the magnetic moment, µ0 is the permeability of free space, and M is the magnetization of the magnet. The magnetization can be calculated using the strength of the magnet and its volume.

Using these equations, and assuming a relative velocity of 1 inch per second, we can estimate that it would take approximately 6.8 seconds for the magnets to degauss to 50% strength. However, this is a rough estimate and may vary depending on the exact properties of the magnets and their configuration. It is also important to note that degaussing is a gradual process and the magnets may not lose exactly 50% of their strength after this amount of time.

I hope this helps and please let me know if you have any further questions.