Corrosion and erosion corrosion type determination from...

G - Physics – 01 – N

Patent

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G01N 17/00 (2006.01) G01B 21/20 (2006.01)

Patent

CA 2674733

Different types of localized corrosion, erosion corrosion and other types of corrosion may be detected and identified by examining or viewing a solid surface where corrosion is occurring or has occurred to obtain an image therefrom. The image is then represented as a three-dimensional mathematical surface, which is then fit to a parametric surface composed of one or more curved and/or polygonal surfaces. Representative parameters are determined from the parametric surface. The corrosion type is identified by the best fit of the parameters known to be correlated (or caused by) a particular type of corrosive activity or agent for a given substrate.

Différents types de corrosion, d'érosion-corrosion et autres types de corrosion localisée peuvent être détectées et identifiées en examinant ou en visualisant une surface solide où la corrosion se produit ou s'est produite afin d'obtenir une image de celle-ci. L'image est ensuite représentée sous la forme d'une surface mathématique tridimensionnelle qui est ensuite ajustée à une surface paramétrique composée d'une ou plusieurs surfaces courbes et/ou polygonales. Des paramètres représentatifs sont déterminés à partir de la surface paramétrique. Le type de corrosion est identifié par le meilleur ajustement des paramètres connus pour être corrélés à (ou provoqués par) un type particulier d'activité corrosive ou d'agent corrosif pour un substrat donné.

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