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Inverse Problems in Science and Engineering | 2012

INVERSION IMPROVEMENT OF A CORROSION DIAGNOSIS THANKS TO AN INEQUALITY CONSTRAINT

Arnaud Guibert; Jean-Louis Coulomb; Olivier Chadebec; Corinne Rannou

This article presents a direct application of a Tikhonov inversion with a quadratic constraint applied in the case of a corrosion diagnosis. The main originality of this method is to inject physical information during the inversion to automatically restrict the Tikhonov parameter space. This application is then tested on a real case of corrosion diagnosis from electrical measurements in the water.


IEEE Transactions on Magnetics | 2010

Corrosion Diagnosis of a Ship Mock-Up From Near Electric-Field Measurements

Arnaud Guibert; Jean-Louis Coulomb; Olivier Chadebec; Corinne Rannou

We present here an original application linking an electrochemical phenomenon and the computational aspect of electromagnetic fields to provide a corrosion diagnosis of a protected underwater steel structure. This is done with the pairing of a boundary element method and the resolution of an inverse problem. After a defined operating time, it is mandatory to check an underwater steel structure. Sadly, current examinations techniques require immobilizing the structure for a long time and are less efficient. The purpose of this paper is to replace this checking by a series of close electrical measurements in the conducting water which provides a corrosion diagnosis of the structure. The new method introduced ensures great time-savings but also an accuracy never reached before. This paper presents this numerical method and its checking through real electrical measurements on a frigate mock-up.


ieee conference on electromagnetic field computation | 2009

Ships Hull Corrosion Diagnosis From Close Measurements of Electric Potential in the Water

Arnaud Guibert; Olivier Chadebec; Jean-Louis Coulomb; Corinne Rannou


MARELEC 2017 | 2017

Multipolar Harmonic Model applied to UEP Source Identification

Olivier Pinaud; Laure-Line Rouve; Olivier Chadebec; C. Goëau; Arnaud Guibert


COMPUMAG 2011 | 2011

Stochastic optimization of electrostatic devices thanks to an hybrid BEM/FMM method

Arnaud Guibert; Luiz Lebensztajn; Olivier Chadebec; Jean-Louis Coulomb


11th WORKSHOP ON OPTIMIZATION AND INVERSE PROBLEMS IN ELECTROMAGNETISM | 2010

Inversion improvement of a corrosion diagnosis thanks to an inequality constraint

Arnaud Guibert; Jean-Louis Coulomb; Olivier Chadebec; Corinne Rannou; Gilles Cauffet


MARELEC 2009 | 2009

Ship Corrosion Diagnosis and ELF Prediction from Electrical Measurements

Arnaud Guibert; Olivier Chadebec; Jean-Louis Coulomb; Corinne Rannou; Ricardo Nogueira


EUROCORR 2009 - The European Corrosion Congress | 2009

Corrosion diagnosis from electrical measurements

Arnaud Guibert; Jean-Louis Coulomb; Olivier Chadebec; Corinne Rannou; Ricardo Nogueira


8ème Conférence des Jeunes Chercheurs en Génie Electrique (JCGE 2008) | 2008

Diagnostic de corrosion de structures sous-marines en acier : application au cas d'un navire

Arnaud Guibert; Jean-Louis Coulomb; Olivier Chadebec; Corinne Rannou; Ricardo Nogueira


6ème Conférence Européenne sur les méthodes numériques en Electromagnétisme (NUMELEC 2008) | 2008

Diagnostic de corrosion de structures métalliques sous-marines sous protection cathodique. Utilisation de méthodes inverses à partir de mesures électriques

Arnaud Guibert; Olivier Chadebec; Jean-Louis Coulomb; Corinne Rannou; Ricardo Nogueira

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