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Automated Detection of Surface Cracks and Numerical Correlation with Thermal-Structural Behaviors of Fire Damaged Concrete Beams

Title
Automated Detection of Surface Cracks and Numerical Correlation with Thermal-Structural Behaviors of Fire Damaged Concrete Beams
Authors
Ryu E.Kang J.Lee J.Shin Y.Kim H.
Ewha Authors
신영수김희선강제원
SCOPUS Author ID
신영수scopus; 김희선scopus; 강제원scopus
Issue Date
2020
Journal Title
International Journal of Concrete Structures and Materials
ISSN
1976-0485JCR Link
Citation
International Journal of Concrete Structures and Materials vol. 14, no. 1
Keywords
convolutional neural networkcrackdeep learningedge detectionfireRC beam
Publisher
Springer
Indexed
SCIE; SCOPUS; KCI WOS scopus
Document Type
Article
Abstract
There are two specific aims in this study; first is to develop and validate an automated crack detection technique for the fire damaged beam. Second is to investigate whether the detected crack information and thermal-structural behaviors can be numerically related. To fulfill the aims, fire tests and residual strength tests are conducted on RC beams having different fire exposure time periods and sustained load levels. To detect the automated cracks, surface images of the fire damaged beam surfaces are taken with digital cameras and an automatic crack detection method is developed using a convolutional neural network (CNN) which is a deep learning technique primarily used for analyzing intricate structures of high-dimensional data [such as high definition (HD) images and videos]. The quantity of cracks detected using the proposed CNN changes depending on the test variables, and the changing trends are similar to those of the crack lengths obtained from the optical observation. Additionally, it is found that the quantity of the automatically detected cracks is numerically related to the temperatures inside the beams as well as the stiffnesses obtained from the residual strength tests. © 2020, The Author(s).
DOI
10.1186/s40069-019-0387-3
Appears in Collections:
엘텍공과대학 > 건축도시시스템공학전공 > Journal papers
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