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Explaining
Differing Magnetic Particle Testing
Results in the Same Specimens
Figure 1-3
Figure 1 - Magnetic particle discontinuity detection survey results (ASNT, 1989).
Figure 2 - The magnetic lines of force, which are disturbed near the discontinuities to form flux leakage: (a) for a crack; (b) for an inclusion.
Figure 3 - The magnetic lines of force released from specimen surface are forced to return back to the body of the specimen by the presence of a few magnetic particles.
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