Magnetic particle testing is primarily used for the detection of surface and near-surface flaws in ferromagnetic materials, with a focus on detecting cracks within ferrimagnetic materials such as Iron, Carbon Steel, Low-alloy steels, PH Steels, Casting, Nickel, and cobalt by looking for flux leakage.
The process involves magnetising a part and then applying black or fluorescent magnetic particles. Particles accumulate at the regions of flux leakage and areas with defects, making them visible to the naked eye whether it be against a white contrast background or under a UV Light.
