Magnetic Particle Inspection (MPI) is an NDT method incorporating a magnetizing force with ferrous particles in order to detect surface and near surface flaws in ferro-magnetic materials.  The presence of a surface or near surface flaw (void) in the material being inspected causes flux leakage of the magnetic field, the ferrous particles are attracted to this leakage and make the flaw visible at the material surface.
Some of the methods we use are:                - Dry Powder                - Wet Black                - Wet Fluorescent                - A.C Yoke
March 9, 2010