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Design and Development of Electrical Resistance Tomography for Crack Detection within Pipelines

Venkatratnam Chitturi, Obay Fares Alashkar


The paper presents a novel approach to identify and evaluate cracks in the pipelines by using Electrical resistance tomography (ERT). The electrical resistance is technically used for imaging sub-surface structures, based on the resistance measurements made at the surface of the pipeline by using electrodes. The electrodes will act as a conductivity detector, whereby the conductivity varies when the pipeline thickness changes with respect to time due to the corrosion or cracks. The experimental results show that the developed system is capable of detecting the cracks within the pipeline by using the neighboring method for current injection. The crack is detected and presented as a 2D as well as a 3D tomography through LabVIEW software.


Electrical resistance tomography (ERT), crack detection, buffer circuit, multiplexing, image reconstruction.

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