Magnetic Particle Testing
Magnetic particle testing is one of the most widely utilized NDT methods since it is fast and relatively easy to apply and part surface preparation is not as critical as it is for some other methods. This mithod uses magnetic fields and small magnetic particles (i.e.iron filings) to detect flaws in
components. The only requirement from an inspectability standpoint is that the component being inspected must be made of a ferromagneticmaterial (a materials that can be magnetized) such as iron, nickel, cobalt, or some of their alloys.