Sensitivity analysis on GPR A-scan data for cavity detection based on area estimation approachopen access
- Authors
- Kim, J.; Nam, B.H.; Youn, H.
- Issue Date
- 2024
- Publisher
- Institute of Physics
- Citation
- IOP Conference Series: Earth and Environmental Science, v.1333, no.1
- Journal Title
- IOP Conference Series: Earth and Environmental Science
- Volume
- 1333
- Number
- 1
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/33216
- DOI
- 10.1088/1755-1315/1333/1/012008
- ISSN
- 1755-1307
- Abstract
- This study aims to determine the optimal range of A-scan data that enables the detection of cavities in reinforced concrete structures using ground-penetrating radar (GPR). GPR is commonly used as a nondestructive testing method for detecting cavities. However, the identification of cavities using B-scan data is challenging when the cavities are obscured by highly reflective objects such as reinforcements. To address this issue, the B-scan data can be substituted with the A-scan data by adopting an area estimation approach. However, this approach requires the determination of the location and range of the A-scan data. In this study, we analyzed GPR A-scan data obtained from a large-scale concrete block with cavities adjacent to a complex reinforcement layout. The location and range were varied to investigate their effects on the accuracy of object detection using the area estimation approach, and an appropriate range was suggested. © Published under licence by IOP Publishing Ltd.
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Collections - College of Engineering > Civil and Environmental Engineering > Journal Articles
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