Both radial component and axial component are the favorite testing factors in the magnetic flux leakage testing(MFLT).Equivalent magnetic dipole model was taken to analyze the distribution feature of magnetic flux leakage of defects,demonstrating the fact that radial component decays more rapidly than axial component.The flux leakage due to steel pipe defects with various defect depth(10% to 40%) and width(0.5 mm to 20 mm) was calculated using finite element method.The sharpness angle of the notch was also ...
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