Magnetic Particle Testing (MT)

Magnetic Particle Inspection (MPI) is a non-destructive testing method that uses magnetism to detect surface and subsurface flaws in metal. The types of metal that MPI works best on are ferrous including include nickel, iron, steel, cobalt, and alloys.

The types of metal that MPI works best on are ferrous including include nickel, iron, steel, cobalt, and alloys.

When the magnetic field passes through metals, flaws or voids will cause the magnetic flux to leak. These leaks or magnetic lines of force attract detection particles revealing indications of potential problems. Wherever there is an indication of magnetic flux leakage, it is evaluated for cause, nature, and required course of action.
Magnetic particle inspections are often carried out to help determine if an item's conformity or fitness for use has been compromised.