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Proceedings Paper

Characterization of pitting corrosion on small diameter ductile iron pipe using thermography
Author(s): Zheng Liu; Marc Genest; Dennis Krys
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Paper Abstract

The quantification of pitting corrosion in terms of material or metal loss is required for the understanding of pipe condition. One approach to accurately map pitting corrosion is with a high-resolution laser scanner. However, this process is time consuming and requires the removal of the pipe segment and sandblasting of its surface. In this study, thermography is considered for the field testing. We investigated the potential of quantifying pitting corrosion with thermography technique. A cleaned pipe was inspected with the pulsed thermography (PT) technique. Extracted signal features were used to characterize metal loss. The algorithms to process PT inspection data and extract signal features to characterize the pitting corrosion are presented in this paper.

Paper Details

Date Published: 9 April 2010
PDF: 8 pages
Proc. SPIE 7649, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010, 764918 (9 April 2010); doi: 10.1117/12.848633
Show Author Affiliations
Zheng Liu, National Research Council Canada (Canada)
Marc Genest, National Research Council Canada (Canada)
Dennis Krys, National Research Council Canada (Canada)


Published in SPIE Proceedings Vol. 7649:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010
Peter J. Shull; Aaron A. Diaz; H. Felix Wu, Editor(s)

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