Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array
Ground-penetrating radar (GPR) is an effective non-destructive detection technology for locating and characterizing reinforcing bars in concrete structures. However, the accurate quantification of reinforcing bar diameters, especially in small-diameter cases, remains a challenging issue. In this pap...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170459 |
| _version_ | 1811689702514753536 |
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| author | Cheng, Weixia Sun, Hai-Han Tan, Kang Hai Fan, Zheng |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Cheng, Weixia Sun, Hai-Han Tan, Kang Hai Fan, Zheng |
| author_sort | Cheng, Weixia |
| collection | NTU |
| description | Ground-penetrating radar (GPR) is an effective non-destructive detection technology for locating and characterizing reinforcing bars in concrete structures. However, the accurate quantification of reinforcing bar diameters, especially in small-diameter cases, remains a challenging issue. In this paper, a sizing method based on multiple-input-multiple-output (MIMO) GPR arrays is presented to estimate the reinforcing bar diameter in concrete. The method employs a linear array of ultra-wideband (UWB) antennas to acquire the full-matrix MIMO data of the reinforcing bar embedded in concrete. The diffraction stacking algorithm is applied to the obtained MIMO data to reconstruct the reinforcing bar. The 3 decibels (dB) drop technique is used to measure the chord length that passes through the peak intensity point of the reconstruction image of the reinforcing bar. Following that, the diameter of the reinforcing bar can be determined based on its cover depth and the chord length. Extensive numerical studies and experiments have been conducted to examine the performance of the proposed method in different scenarios. The method shows excellent sizing accuracy for reinforcing bars with different diameters and cover depths. |
| first_indexed | 2024-10-01T05:52:18Z |
| format | Journal Article |
| id | ntu-10356/170459 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:52:18Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1704592023-09-12T07:27:26Z Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array Cheng, Weixia Sun, Hai-Han Tan, Kang Hai Fan, Zheng School of Mechanical and Aerospace Engineering School of Civil and Environmental Engineering Engineering::Mechanical engineering Diffraction Stacking Algorithm Ground-penetrating Radar Ground-penetrating radar (GPR) is an effective non-destructive detection technology for locating and characterizing reinforcing bars in concrete structures. However, the accurate quantification of reinforcing bar diameters, especially in small-diameter cases, remains a challenging issue. In this paper, a sizing method based on multiple-input-multiple-output (MIMO) GPR arrays is presented to estimate the reinforcing bar diameter in concrete. The method employs a linear array of ultra-wideband (UWB) antennas to acquire the full-matrix MIMO data of the reinforcing bar embedded in concrete. The diffraction stacking algorithm is applied to the obtained MIMO data to reconstruct the reinforcing bar. The 3 decibels (dB) drop technique is used to measure the chord length that passes through the peak intensity point of the reconstruction image of the reinforcing bar. Following that, the diameter of the reinforcing bar can be determined based on its cover depth and the chord length. Extensive numerical studies and experiments have been conducted to examine the performance of the proposed method in different scenarios. The method shows excellent sizing accuracy for reinforcing bars with different diameters and cover depths. Agency for Science, Technology and Research (A*STAR) The authors acknowledge funding from A*STAR Science and Engineering Research Council, Singapore under AME Individual Research Grant (IRG) 2018 Grant Call (Project No. A1983c0030). 2023-09-12T07:27:26Z 2023-09-12T07:27:26Z 2023 Journal Article Cheng, W., Sun, H., Tan, K. H. & Fan, Z. (2023). Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array. Construction and Building Materials, 365, 129924-. https://dx.doi.org/10.1016/j.conbuildmat.2022.129924 0950-0618 https://hdl.handle.net/10356/170459 10.1016/j.conbuildmat.2022.129924 2-s2.0-85144045431 365 129924 en A1983c0030 Construction and Building Materials © 2022 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Diffraction Stacking Algorithm Ground-penetrating Radar Cheng, Weixia Sun, Hai-Han Tan, Kang Hai Fan, Zheng Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array |
| title | Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array |
| title_full | Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array |
| title_fullStr | Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array |
| title_full_unstemmed | Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array |
| title_short | Estimating the diameter of reinforcing bars using an ultra-wideband MIMO GPR array |
| title_sort | estimating the diameter of reinforcing bars using an ultra wideband mimo gpr array |
| topic | Engineering::Mechanical engineering Diffraction Stacking Algorithm Ground-penetrating Radar |
| url | https://hdl.handle.net/10356/170459 |
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