Evolution Mechanism and High-Precision Quantitative Identification of MFL Signals from Defects Under Supersaturated Magnetization Conditions.

As shown in Figure 4 and Figure 5 , the MFL signal amplitude exhibits an increasing trend with rising magnetization intensity.

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In the initial small range, the attenuation effect of the leakage magnetic field is stronger than the enhancement effect of the permanent magnetic field, so the radial signal rises slowly; in the subsequent stage, the enhancement effect of the permanent magnetic field dominates, and the radial signal shows a decreasing trend again.

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