Field Distribution Around Surface Cracks in Metallic Cylindrical Structures Excited by High-Frequency Current-Carrying Coils of Arbitrary Shape
We tend to propose an economical modeling technique for the theoretical prediction of magnetic field distributions around surface cracks in metallic cylindrical structures thanks to high-frequency alternating-current-carrying coils of arbitrary form. In this technique, a closed-form answer in Fourier domain is derived that extends the governing Laplace equation inside the crack to the regions outside the crack. This is completed by introducing a boundary condition that's based mostly on the conservation of magnetic flux. The validity of the proposed model is demonstrated by comparing the simulation results of several case studies with measurements and those obtained using a industrial finite integration technique code.
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