A learning-by-examples approach for non-destructive localization and characterization of defects through eddy current measurements

This work presents an innovative inversion method for non-destructive localization and characterization of defects based on a Learning-by-Example (LBE) approach. The qualitative imaging of the electromagnetic anomalies affecting a conductive structure is based on the exploitation of Eddy Current Testing (ECT) measurements through Support Vector Regression (SVR), enabling an evaluation of the structure under test almost in real-time. Some preliminary numerical results are shown in order to validate the effectiveness of the proposed method.

[1]  C. Reboud,et al.  Efficient Modeling of ECT Signals for Realistic Cracks in Layered Half-Space , 2013, IEEE Transactions on Magnetics.

[2]  P. Rocca,et al.  Numerical validation and experimental results of a multi-resolution SVM-based classification procedure for breast imaging , 2009, 2009 IEEE Antennas and Propagation Society International Symposium.

[3]  P. Rocca,et al.  SVM for Electromagnetics: State-of-art, potentialities, and trends , 2012, Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.

[4]  Leonardo Lizzi,et al.  Three-dimensional real-time localization of subsurface objects — From theory to experimental validation , 2009, 2009 IEEE International Geoscience and Remote Sensing Symposium.

[5]  C. Reboud,et al.  Eddy Current Modeling of Narrow Cracks in Planar-Layered Metal Structures , 2012, IEEE Transactions on Magnetics.

[6]  Manuel Benedetti,et al.  Multiple-Shape Reconstruction by Means of Multiregion Level Sets , 2010, IEEE Transactions on Geoscience and Remote Sensing.

[7]  P. Rocca,et al.  Evolutionary optimization as applied to inverse scattering problems , 2009 .

[8]  M. Tanaka,et al.  Fast simulation method for eddy current testing , 2000 .

[9]  Andrea Boni,et al.  An innovative real-time technique for buried object detection , 2003, IEEE Trans. Geosci. Remote. Sens..

[10]  J. Pavo,et al.  Calculation of eddy current testing probe signal with global approximation , 2006, IEEE Transactions on Magnetics.