Investigation of capabilities of electromagnetic tomography for pipeline imaging

• Main Authors: Mukaiyin, Nur Fharahin, Mohamad, Elmy Johana, Mansor, Zulkifli, Mohmad Ameran, Hanis Liyana, Abdul Rahim, Ruzairi, Pusppanathan, Jaysuman, Nasir, Nur Nadia, Zakaria, Zulkarnay, Zainal Abidin, Ilham Mukriz, Mohd. Faizan Mawrah, Omar, Zulkiflli, Nur Amira
• Format: Article
• Language: English
• Published: Penerbit UTM Press 2019
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/84771/1/ZulkifliMansor2019_InvestigationofCapabilitiesofElectromagneticTomography.pdf; http://eprints.utm.my/id/eprint/84771/; https://dx.doi.org/10.11113/jt.v81.13197

In industrial process, pipeline leakage often only noticeable pipe condition is critical henceforth causing damages to its internal content. Therefore, pipeline inspection and monitoring work is highly demanding to take early precautions. Electromagnetic Tomography (EMT) is capable to produce images of the internal structure of an object by using external sensors without disrupting it. The coil sensors are placed around the object where the source coil transmits an oscillating magnetic field while the rest acts as receiver and measure the received signals. The measured signal provides the magnetic field distribution of the pipe, and will differ according to the materials’ passive electrical properties. In this paper, we investigate the capability of using EMT to identify metallic pipe openings by conducting a finite element analysis simulation study. The design and parameters of the EMT system, as well as the results of using the EMT model to detect various degree of metallic pipe openings is presented. The results confirm that the EMT imaging as a promising tool for inspection of metallic pipelines where the magnetic field of the investigated region differs according to the pipe opening and material of the pipeline.