Sizing of 3-D surface cracks with varying width by using leakage magnetic field and Hall element probe
- Conference date: 28 Jun-2 Jul 1999
- Location: Sydney (Australia)
A method is developed for computing the sizes of surface cracks in magnetic materials. The method is applicable to a crack with varying width along the crack depth, and is based on measuring leakage magnetic field by Hall element probe. New analytical expressions are derived for the z-component of the intensity of the leakage magnetic field of a surface crack with linearly varying width. Computations are performed for sizing of several such cracks with complex cross-sections, and unknown shapes. The computed results show that reasonably precise sizing can be achieved for all of the investigated cracks.
- Magnetic fields
- Magnetic field measurements
- Magnetic materials
- Surface magnetism
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Y. K. Semertzidis, M. Aoki, M. Auzinsh, V. Balakin, A. Bazhan, G. W. Bennett, R. M. Carey, P. Cushman, P. T. Debevec, A. Dudnikov, F. J. M. Farley, D. W. Hertzog, M. Iwasaki, K. Jungmann, D. Kawall, B. Khazin, I. B. Khriplovich, B. Kirk, Y. Kuno, D. M. Lazarus, L. B. Leipuner, V. Logashenko, K. R. Lynch, W. J. Marciano, R. McNabb, W. Meng, J. P. Miller, W. M. Morse, C. J. G. Onderwater, Y. F. Orlov, C. S. Ozben, R. Prigl, S. Rescia, B. L. Roberts, N. Shafer‐Ray, A. Silenko, E. J. Stephenson, K. Yoshimura and EDM Collaboration
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