T9074-AS-GIB-010/271 Rev 1
Suitable magnetic flux is indicated when the indicator is laid, copper side exposed, on the work piece in the area of interest and after application of the magnetic particles (and removal of excess particles for the dry powder method), the lines at 45 and 90 degrees to the applied field are clearly visible. In cases where the indicator is in partial contact with the work piece, suitable magnetic flux is indicated when the lines at 45 and 90 degrees to the applied field are clearly visible on the portion of the indicator that is in contact with the work piece.
Figure 4-1. Magnetic Particle Field Indicator.
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