Characterization of pitting corrosion on small diameter ductile iron pipe using thermography

Zheng Liu; Marc Genest; Dennis Krys

doi:10.1117/12.848633

8 April 2010 Characterization of pitting corrosion on small diameter ductile iron pipe using thermography

Zheng Liu, Marc Genest, Dennis Krys

Proceedings Volume 7649, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010; 764918 (2010) https://doi.org/10.1117/12.848633
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

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.

Citation Download Citation

Zheng Liu, Marc Genest, and Dennis Krys "Characterization of pitting corrosion on small diameter ductile iron pipe using thermography", Proc. SPIE 7649, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2010, 764918 (8 April 2010); https://doi.org/10.1117/12.848633

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