On the base of introducing the principle of the magneticfluxleakage (MFL) detection, the finite element method based on ANSYS used to simulate and analyze the MFL signal is presented.
A measuring method combining main magneticflux and magneticfluxleakage for approaching the residual wall thickness of the oil well tubing in-service was presented.
提出采用主磁通与漏磁通相结合的方法检测在用油管剩余壁厚的方法。
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The signal of magneticfluxleakage is calculated when damage occurs at the wall of the pipeline.