Advantages & Limitation of MPT

Advantages Of MPT:

1.Detects flaw below ¼” below surface.

2. Detects flaw filled with foreign material.
3. Detect defect below painted & platted surface.
4. Immediate indication.
5. Testing is possible up 300°C using dry powder.
6. Indication can recorded.

Limitation of MPT :

1.Applicable to only ferromagnetic material only.

2.Limited depth of detection.

3.Depth & size is not indicated.

4.Sensitivity varies with surface roughness & position.

5.Sensitivity rapidly diminishes with depth.