Magnetic Particle Testing

Used for finding surface I near surface defects in ferromagnetic material, Magnetic Particle testing (MT) is a versatile inspection method used for field and shop applications. Magnetic particle testing works by magnetizing a ferrimagnet ice specimen using a magnet or special magnetizing equipment. If the specimen has discontinuity, the magnetic field flowing through the specimens interrupted and leakage field occurs. Finely milled iron particles coated with a dye pigment are applied to the specimen. These are attracted to leakage fields and cluster to from an indication directly over the discontinuity.