FIVE BASIC ELEMENTS OF MPI

SOURCE:-

Source produces the probing medium or investigating medium. In this MPI test the current is the source element.

MODIFICATION:

            The ability to change or vary the magnetic field if there is any crack or discontinuity in the specimen. Here in the MPI test the current is the modifying element.

DETECTION:   

  The material which detect that how much change occur in the magnetic field around the specimen. Here the iron magnetic particle is the detective element.

INDICATION:-

            The element which indicate the position of the crack in the specimen. The magnetic field pattern or signals is the indicating element.

INTERPRETATION:-

            The observer which sees the signals or pattern of magnetic field which give the results of the test is called interpreter.