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Magnetic-Particle Testing

Magnetic Particle Inspection (MPI) is a non-destructive testing method used to detect surface and near-surface flaws in ferromagnetic materials.

It works by magnetizing the material and applying magnetic particles, typically in the form of a dry powder or a wet suspension, to the surface.

If there are any defects present, such as cracks or discontinuities, the magnetic particles will be attracted to and accumulate around these areas, making the flaws visible under proper lighting conditions.

MPI is commonly used in industries such as aerospace, automotive, manufacturing, and construction to ensure the integrity of critical components like welds, castings, and forgings. It is a highly effective technique for identifying defects quickly and accurately, contributing to the safety and eliability of various structures and equipment.

FAQs:

Magnetic-Particle Testing (MPT) is a nondestructive testing method used to detect surface and near-surface discontinuities in ferromagnetic materials.

Magnetic-Particle Testing is primarily used for ferromagnetic materials, such as iron, nickel, and cobalt, or their alloys. Common materials tested include steel, cast iron, and some magnetic stainless steels.

Magnetic particles used in MPT can be either dry or wet. Dry particles are applied directly to the surface and are typically used for quick, surface-level inspections.