Two finite element models have been developed to analyze the electromagnetic interaction between probe coils and crack-type defects in eddy current NDE problems. One is a fully discretized model where the width of the crack is subdivided into finite elements. The other is a thin sheet crack model where the crack-type irregularities are treated as non-conducting thin sheets with negligible thickness. To verify the models benchmark problem has been solved and comparison between the calculated and experimental data has been performed.
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References
1.
BowlerJ.R., Electrosoft2 (1991) 142.
2.
SabbaghH.A. and SabbaghL.D., IEEE Trans. Magn., Mag-22 (1986) 282.
3.
BiroO. and PreisK., IEEE Trans. Magn.MAG-25, No. 4 (1989) 3145.
4.
BowlerJ.R., Review of Quantitative Nondestructive Evaluation, Vol. 5A (Plenum, New York, 1986) p. 149.
5.
KahnA.H., SpalH. and FeldmanA., J. Appl. Phys.48 (1977) 4454.
6.
BurkeS.K. and RoseL.R.F., Proc. R. Soc. Lond. A418 (1988) 229.
