Magnetic Particle Testing

Magnetic  Particle Testing

The magnetic particle testing is applied to detect cracks and other discontinuities on the surface of ferromagnetic materials. This method involves magnetizing an area to be examined, and applying ferromagnetic particles (the examination’s medium) to the surface. Particle patterns form on the surface where the magnetic field is forced out of the part and over discontinuities to cause a leakage field that attracts the particles. Particle patterns are usually characteristic of the type of discontinuity that is detected.

There are 3 methods in magnetic particle testing

1. Wet Visible

2. Dry Visible

3. Wet Fluorescent