Magnetic particle Testing used for the finding of surface and near surface defects in ferromagnetic materials such as iron, nickel, and cobalt, and some of their alloys and is primarily used for crack detection.
The test sample is magnetised either locally or overall. If there is a surface-breaking defect, the magnetic field is distorted, causing flux leakage around the defect. This leakage flux is displayed at the surface with very fine iron particles applied either dry or suspended in a liquid. The particles accumulate at the regions of flux leakage which can be seen visually. Thus, a crack/defects indicated as a line of iron powder particles on the surface.
Magnetic Particle Testing – Level I & II, NDT training course is established to meet the requirements of ASNT SNT-TC-1A and customer specific document for training and certification.
After completion of Magnetic particle Testing - Level II training course, you will give get in-depth knowledge of Magnetizing techniques, Behaviour of material when magnetized, Current requirement ,Magnetizing equipment and types of medium, interpretation, and evaluation of various product flaws.
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