Conventional NDT

Magnetic Particle Testing

Flaw detection using current flow induction (AC/DC) and permanent magnets with visual Aids such as fluorescent and colour contrast inks and powders.

An extremely cost effective method for the detection of surface and near surface flaws in ferromagnetic materials, MT is primarily used for crack detection. Following magnetization The specimen is covered with very fine iron particles, either dry or suspended in a liquid. Surface breaking flaws distort the magnetic field causing local magnetic flux leakage that attract the iron particles producing a build up that can be seen visually.