Magnetic Partical Inspection
Magnetic Partical Inspection (MPI) is used to detect casting, forging and weld surface defects such as hairline and fatigue cracks on in-service components.
Magnetic particle inspection is a cost effective and efficient method of testing ferromagnetic components for discontinuities.
In a fabrication environment it is used to locate surface and near surface weld defects.
Magnetic Partical Inspection can also be used using fluorescent consumables and ultra-violet black lamps. This is a common technique for the inspection of turbine blades.