This work is focused on the image reconstruction of defects in metallic materials using time-harmonic eddy currents testing measurements. The proposed approach combines an efficient numerical model of the probe-defect interaction and a least square error regularized procedure for solving the inverse problem. The method has been successfully tested to detect multiple volumetric defects on multiple layers of a planar conductive material. The regularization term is the total variation, selected to "encode" the a priori information that defects are supposed to be "blocky". In this manner, the method is potentially capable of treating on the same fool several defects type such as EDM, fatigue crack, stress corrosion crack etc.

3D Reconstruction of flaws in metallic materials by eddy currents inspections

RICCI, MARCO;
2008-01-01

Abstract

This work is focused on the image reconstruction of defects in metallic materials using time-harmonic eddy currents testing measurements. The proposed approach combines an efficient numerical model of the probe-defect interaction and a least square error regularized procedure for solving the inverse problem. The method has been successfully tested to detect multiple volumetric defects on multiple layers of a planar conductive material. The regularization term is the total variation, selected to "encode" the a priori information that defects are supposed to be "blocky". In this manner, the method is potentially capable of treating on the same fool several defects type such as EDM, fatigue crack, stress corrosion crack etc.
2008
eddy current testing; inverse problem; non destructive testing
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/166544
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 4
social impact