Magnetic Particle Inspection otherwise known as MPI is a method that can be used to find surface and near surface flaws in ferromagnetic materials such as steel and iron it is primarily used for crack detection.

Magnetic Particle Inspection otherwise known as MPI is a method that can be used to find surface and near surface flaws in ferromagnetic materials such as steel and iron it is primarily used for crack detection.

Magnetic particle testing works by magnetizing a ferromagnetic specimen using a magnet or special magnetizing equipment. If the specimen has discontinuity, the magnetic field flowing through the specimen is interrupted and leakage field occurs.
 Milled iron particles coated with a dye pigment are applied to the specimen.
These are attracted to leakage fields and cluster to form an indication directly over the discontinuity. The indication is visually detected under proper lighting conditions

 

Pre-cleaning of component

Introduction of Magnetic field

Application of magnetic media

Interpretation of magnetic particle indications our experienced and qualified NDT inspector.