MAGNETIC PARTICLE INSPECTION

Magnetic particle inspection (MPI) is an inspection method for detecting surface and near surface discontinuities in ferrous materials.

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MPI uses magnetic fields generated by a portable  electro-magnet combined with small magnetic particles (i.e. iron filings) suspended in a solution to detect flaws in components.

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As such the component being inspected must be made of a ferromagnetic material such as iron, nickel, cobalt, or some of their alloys. These are materials that can be magnetized to a level that will allow the inspection to be effective.

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Depending on the sensitivity level requirements, we can conduct MPI using the following techniques:

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• Visible light contrast method

• UV fluorescent method

• Hot surface powder (For high temperature surfaces)