The ``Expected Improvement'' global optimization algorithm for the solution of eddy-current testing inverse problems

S. Bilicz (1, 2) , Emmanuel Vazquez (3) , Marc Lambert (1) , S. Gyimothy (2) , J. Pavo (2)

1 L2S - Laboratoire des signaux et systèmes
2 BME - Budapest University of Technology and Economics [Budapest]
3 E3S - Supélec Sciences des Systèmes

This paper provides a new methodology for the characterization of a defect embedded in a conductive nonmagnetic plate from the measurement of the impedance variations of an air-cored pancake coil at eddy current frequencies. The inversion problem is dealt with using the Expected Improvement (EI) global optimization algorithm, the latter being based on the kriging interpolation of the cost function.. The efficiency of the approach is discussed in the light of preliminary numerical examples obtained using synthetic data.

Mots clés: ENDE; global optimization; inverse problem; response surface; kriging

Domaines: Electromagnétisme

S. Bilicz, Emmanuel Vazquez, Marc Lambert, S. Gyimothy, J. Pavo. The ``Expected Improvement'' global optimization algorithm for the solution of eddy-current testing inverse problems. 14th International Workshop on Electromagnetic Non-Destructive Evaluation (ENDE'09), Jul 2009, Dayton, United States. pp.144-145. ⟨hal-00365339⟩