Magnetic Particle Inspection (MPI)
Magnetic Particle Inspection is a wizard of the NDT world, revealing the unseen flaws in ferromagnetic materials.
This method, used to detect surface and near-surface discontinuities, involves inducing a magnetic field in the material where flaws cause disturbances visible through the accumulation of iron particles. By creating a magnetic field around the object, any surface disruptions cause magnetic flux leakage, which attracts iron particles, visually marking the defects like a map to buried treasure. This cost-effective technique is especially effective for identifying cracks, making it a straightforward and reliable method for checking the integrity of ferromagnetic materials.