On new possibilities for making local measurements of the coercive force of ferromagnetic objects

Abstract

The possibility of reducing the influence of both the gap in a transducer-object combined circuit and the shape of tested objects on the results of local measurements of their coercive force is investigated. It is shown that additional measurements of the maximum magnetic flux in the circuit and the tangential component of the magnetic field on the surface of the tested area of the object, which is retained after the magnetizing current is turned off, allow a substantial decrease in the corre- sponding errors. © Pleiades Publishing, Ltd., 2012.