Magnetic particle testing (MT) is a nondestructive testing method used to identify defects on the surface, and subsurface, of ferromagnetic materials by running a magnetic current through it. When the current is interrupted by a defect the magnetism behaves irregularly from that point, allowing the inspector to determine the indication’s exact location.
As seen in this image, when an object is magnetized and defects have created these current irregularities, magnetic particles are spread over the surface, accumulating around the irregularities.
Haven Metrology partners with Industrial Inspection to offer a larger scope of inspection services.