Current and Field Flow (1)

Question 1

What should to orientation of a defect be for greatest possible MT detection?

Answer 1

Magnetic lines of force should be 90° to the direction of the defect.

if parallel, very little leakage will be detected.

Question 2

Describe the Right Hand Rule:

Answer 2

Magnetic fields created 90° (up), will have a counterclockwise current flow direction.

Current flow created at 90° (up), will have a counterclockwise Magnetic field direction.

Question 3

The proper orientation of the magnetic field in the part in relation to the direction of the defect, is a ____ important factor than the strength of the magnetizing current.

Answer 3

more important factor