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Investigation of drag effect using the field signature method

Lookup NU author(s): Professor Gui Yun TianORCiD, Dr Liang Cheng


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The potential drop (PD) method is an established non-destructive evaluation (NDE) technique. The monitoring of internal corrosion, erosion and cracks in piping systems, based on electrical field mapping or direct current potential drop array, is also known as the field signature method (FSM). The FSM has been applied in the field of submarine pipe monitoring and land-based oil and gas transmission pipes and containers. In the experimental studies, to detect and calculate the degree of pipe corrosion, the FSM analyses the relationships between the electrical resistance and pipe thickness using an electrode matrix. The relevant drag effect or trans-resistance will cause a large margin of error in the application of resistance arrays. It is the first time that the drag effect in the paper is investigated and analysed in resistance networks with the help of the FSM. Subsequently, a method to calculate the drag factors and eliminate its errors is proposed and presented. Theoretical analysis, simulation and experimental results show that the measurement accuracy can be improved by eliminating the errors caused by the drag effect.

Publication metadata

Author(s): Wan ZJ, Liao JB, Tian GY, Cheng L

Publication type: Article

Publication status: Published

Journal: Measurement Science and Technology

Year: 2011

Volume: 22

Issue: 8

Print publication date: 15/07/2011

ISSN (print): 0957-0233

ISSN (electronic): 1361-6501

Publisher: Institute of Physics Publishing Ltd.


DOI: 10.1088/0957-0233/22/8/085708


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Funder referenceFunder name
EP/F06151X/1Engineering and Physical Sciences Research Council (EPSRC), UK