Abstract
Ferromagnetic materials, i.e., iron steel and its composites, are widely used as the frame parts of various artificial products and constructions such as automobile, air plane, building, bridge and so on. Because of its mechanical property, iron steel is most popular in use for the frame materials to maintain their mechanical strength. On the other side, nondestructive testing of iron steel is an extremely important way in order to keep their mechanical safeness.
One of the deterministic differences between the ferromagnetic and non-magnetic materials is that all of the ferromagnetic materials when applying external magnetic field attracts major magnetic field; and also magnetization process of ferromagnetic materials always accompanies with the Barkhausen effects.
In the present paper, we propose a new nondestructive testing methodology for the ferromagnetic materials fully utilizing the Barkhausen effects along with smart visualized information processing.
