Patent ID: 9658297
Date: 2017-05-23
CPC Classifications: G01N,G01R

Claim:
1. An apparatus for measuring a magnetic permeability of a ferromagnetic wire, the apparatus comprising: a non-magnetic wire retainer having a circular groove that is configured to retain the ferromagnetic wire for measurement; a permanent magnet that is proximate to the non-magnetic wire retainer that is configured to provide a substantially uniform magnetic field along a circumference of the circular groove, wherein the permanent magnet is positioned proximate to the non-magnetic wire retainer such that a centerline of the permanent magnet is equidistant from the circumference of the circular groove to provide the substantially uniform magnetic field along the circumference of the circular groove; and a force sensor coupled to the permanent magnet that is configured to measure an attractive force between the permanent magnet and the ferromagnetic wire for determining the magnetic permeability of the ferromagnetic wire.