MPI is commonly used in industries such as manufacturing, aerospace, automotive, and construction to detect surface cracks, weld defects, fatigue cracks, and other discontinuities in ferromagnetic materials. It is a sensitive method for detecting defects near the surface of the material, making it valuable for ensuring the structural integrity and safety of components and structures.
Magnetic Particle Inspection is primarily used to detect surface and near-surface defects in ferromagnetic materials. Ferromagnetic materials are those that are strongly attracted to magnets, such as iron, steel, and some alloys. The principle behind MPI involves creating a magnetic field in the material being tested and applying magnetic particles (usually iron or iron oxide particles) to the surface.
MPI is considered a reliable and cost-effective non-destructive testing technique for ferromagnetic materials. However, it is important to note that it is most effective for detecting surface and near-surface defects and may not be suitable for inspecting materials that are non-ferromagnetic or have non-magnetic surface layers.
