Solution of reciprocal problem of magnetic flaw detection through calculation of multipole moments of an elliptic flaw
Source abstract
Abstract
An algorithm has been developed for calculating parameters of an effective elliptic flaw (EEF) on the base of changes in the magnetic field intensity in the air. EEF is defined as a flaw with an elliptic cross section whose magnetic moments (dipole, quadrupole, and octupole), hence the field at a large distance, are the same as those of a given flaw with an arbitrary shape. The relation between the parameters of EEF and real flaws has been established by solving Grinberg’s integral equation for internal and surface flaws of the two-dimensional configuration in a half-space filled with a linear (μ=const) ferromagnetic material. This relation was used in drawing up the solution of the reciprocal problem of magnetic flaw detection.
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Research context
OpenAlex topics: Electrical and Bioimpedance Tomography · Non-Destructive Testing Techniques · Sensor Technology and Measurement Systems
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References (12)
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1. Shleenkov, A.S.,Development of Arrays of Magnetic-Field Transducers for Nondestructive Testing of Ferromagnetic Components and Welded Joints, Doctoral Dissertation, Yekaterinburg, Institute of Metal Physics, Ural Division of Russian Academy of Sciences, 1998.
2. Sapozhnikov, A.B.,Teoreticheskie osnovy magnitnoi defektoskopii metallichekikh tel (Theoretical Basis of Magnetic Flaw Detection in Metallic Bodies), Tomsk, 1980.
3. Forster, F., On the Way from “Know-How” to “Know-Why” in the Magnetic Field Leakage Method of NDT,Mater. Evaluation, 1985, vol. 43, no. 10, pp. 1154–1168; no. 11, pp. 1398–1408.
4. Shur, M.L., Zagidulin, R.V., and Shcherbinin, V.E., Theoretical Issues of Field Generation by Surface Flaws,Defektoskopiya, 1988, no. 3, pp. 14–15.
5. Zatsepin, N.N. and Shcherbinin, V.E., Calculations of Magnetic Fields due to Surface Flaws. I. Topography of Model Defect Fields,Defektoskopiya, 1966, no. 5, pp. 50–59.
6. Shur, M.L., Zagidulin, R.V., and Shcherbinin, V.E., Magnetostatic Field due to a Flaw in a Plane-Parallel Plate,Defektoskopiya, 1997, no. 3, pp. 92–96.
7. Pashagin, A.I. and Yakovleva, N.V., Magnetic Field due to a Flaw Tilted with Respect to the Surface,Defektoskopiya, 1994, no. 5, pp. 52–58.
8. Zolotovitskii, A.B., Shur, M.L., and Zagidulin, R.V., Effect of Nonlinearity of a Ferromagnetic Medium on Magnetic Field due to an Internal Flaw,Defektoskopiya, 1989, no. 5, pp. 42–50.
9. Greiser, A.I. and Domashevskii, B.N., Compensation Model of Surface Flaw,Defektoskopiya, 1991, no. 11, pp. 64–67.
10. Murai, T. and Kagama, Y., Boundary Element Simulation of Electric-Potential Nondestructive Inspection,Int. J. Methods End., 1986, vol. 23, pp. 35–47.10.1002/nme.1620230105 ↗
11. Grinberg, G.A.,Izbrannye voprosy matematicheskoi teorii elektricheskikh i magnitnykh yavlenii (Selected Topics in Mathematical Theory of Electric and Magnetic Phenomena), Moscow: Energiya, 1948.
12. Krotov, L.N., Shleenkov, A.S., Mel'nik, R.S., and Shcherbinin, S.V., Computer Simulation of Magnetic Fields due to Flaws. Two-Dimensional Problem,Defektoskopiya, 1995, no. 9, pp. 27–32.