Magnetic Particle Inspection is used to examine surface and near- surface defects. Magnetic particle inspection uses magnetic field and small ferrous particles (iron filings) to detect flaws in the test object. By inducing a magnetic field in a Ferro-magnetic material and then dusting the surface with iron fillings, any surface/near surface flaws will be visibly shown by an accumulation of iron filings.
- Only ferromagnetic materials can be inspected.
- Detects Surface & Near Surface defects.