Abstract
For large section members such as cables, there are insufficient methods for circumferential scanning along the cable sections for the detection of corroded broken wires. In this study, a detection method for broken wire damage (BWD) along the circumferential direction of cable based on the principle of self-magnetic flux leakage (SMFL) was proposed. First, the theoretical calculation model and the finite element model of the circumferential magnetic field in the polar coordinate system were established. The analysis results showed that the position of the BWD on the section of cable could be effectively judged by the concave position of the curves of the SMFL in the polar coordinate system. Through the circumferential scanning at different positions, the length of the BWD could be judged by the coordinates of x when the value of index “C” (similarity to circle) approached 1 for the first time in the x − C curves. Finally, the detection experiment for the BWD of a parallel wire bundle was carried out. The experimental results were consistent with the analysis results for the theoretical model and the finite element, and the experimental results verified the correctness of the detection method.
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Acknowledgments
This study was supported by the National Key Research and Development Program of China (2017YFC0806007), the Natural Science Fund for Distinguished Young Scholars of Chongqing (cstc2020jcyj-jqX0006), the Chongqing Natural Science Foundation of China (cstc2019jcyj-cxttX0004, cstc2019jscx-gksbX0047), the Chongqing Urban Management Research Project (2019 No. 25), the Guizhou science and technology support project ([2018] 2154), the Open Fund of State Key Laboratory of the Mountain Bridge and Tunnel Engineering (SKLBT-19-014), the Science and Technology Project of Guizhou Provincial Transportation Department (2020-123-017), and the Chongqing Jiaotong University Graduate scientific research innovation (Innovation Fund) project (2020B0001). We thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript.
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Qu, Y., Zhou, J., Liu, R. et al. Research on the Detection of the Broken Wire Damage of a Cable in the Circumferential Directions Based on Self-magnetic Flux Leakage. KSCE J Civ Eng 25, 879–890 (2021). https://doi.org/10.1007/s12205-021-0334-0
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DOI: https://doi.org/10.1007/s12205-021-0334-0