Recently, non-metallic materials which are resilient to corrosion, low cost, and light weight, have been exploited in many industrial sectors such as oil and gas field. A common application of them is in the form of pipes. Despite the advantages, these pipes can be damaged by delamination, defects, holes, and erosion, which may lead to major production failures or even environmental catastrophes. To prevent these issues, non-destructive testing (NDT) of these pipes is required to replace these components in a timely manner. Due to the fact that the traditional NDT methods are mostly effective for metallic pipes, microwave holographic imaging is proposed for inspection of multiple concentric non-metallic pipes. Besides, standardized minimum norm (SMN) is employed to mitigate the depth biasing problem in the proposed imaging technique. In order to reduce the complexity of the imaging system, we aim at using the narrowest possible frequency band by using an array of receiver antennas. The performance of the proposed NDT method is validated through simulation and experimental data in two scenarios including the antennas placed outside the pipes and inside the pipes.
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Effect of Eccentricity in Microwave Imaging of Multiple Composite Pipes
The use of non-metallic composites that are durable, low cost, and lightweight is growing fast in various industries. A commonly used form of these materials is in the shape of pipes that can be used, for instance, in oil and gas industry. Such pipes can be damaged due to material loss (defects and holes), erosions, and more which may cause major production failures or environmental mishaps. To prevent these issues, non-destructive testing (NDT) methods need to be employed for regular inspections of such components. Since traditional NDT methods are mainly used for metallic pipes, recently microwave imaging has been proposed as a promising approach for examination of non-metallic pipes. While microwave imaging can be employed for inspection of multiple layers of pipes, the effect of undesired eccentricity of the pipes can impose additional imaging errors. In this paper, for the first time, we study the effect of eccentricity of the pipes on the images reconstructed using near-field holographic microwave imaging when imaging double pipes.
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- Award ID(s):
- 1920098
- PAR ID:
- 10248774
- Date Published:
- Journal Name:
- Columbia Undergraduate Science Journal
- Volume:
- 15
- ISSN:
- 1932-765X
- Page Range / eLocation ID:
- 30 to 38
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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