A Magnetic Particle Testing (MPT) Machine which is a remarkable non-destructive testing (NDT) device, detects surface and near-surface defects in ferromagnetic materials like iron and steel. It is a process that is both efficient and highly trustworthy.

The item first undergoes magnetization, which can be done with the help of direct passage of an electric current through it or by using an induced magnetic field. Directly after that, iron particles in either dry powder form or suspended in a liquid carrier are applied.

If there is a defect, such as a crack, seam, or inclusion, it will interrupt the magnetic field and result in "flux leakage" at that point. This leakage will produce a strong local magnetic pole that will attract and retain the particles, thus forming a visible indication that accurately delineates the defect. For maximum sensitivity, fluorescent particles are very often used and then observed under ultraviolet (UV-A) light. The magnetic particle testing machine has been praised for its speed, portability, and rare ability to detect fine cracks, and is thus indispensable in pivotal sectors such as aerospace, automotive, and energy.

 It guarantees the structural integrity and safety of components through periodic quality control and maintenance inspections.