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Damage Detection in Beam-Like Structures Using Mode Shape Curvature Change-Based Method
In this paper, the mode shape curvature change-based method is improved to detect the damages in beam-like structures. A steel beam, whose damages are simulated by reducing the bending stiffness of the beam’s elements, is analyzed for vibration with undamaged and damaged cases. Additionally, a damage threshold is investigated to detect the damage zone and evaluate the accuracy of the detection method. The effectiveness of the improved damage detection method is evaluated through a damage index. This study also proposed using the Spline function to smooth data and perform interpolation. Furthermore, the mode shape curvature is calculated by using two different functions, which are a central difference approximation algorithm and an alternative algorithm, to make a comparison about the effectiveness of damage detection. This paper shows that the mode shape curvature change-based method, using a central difference approximation algorithm, which is combined with the Spline function, gives highly accurate results of the damage detection in both the damage’s occurrence and location.
Damage Detection in Beam-Like Structures Using Mode Shape Curvature Change-Based Method
In this paper, the mode shape curvature change-based method is improved to detect the damages in beam-like structures. A steel beam, whose damages are simulated by reducing the bending stiffness of the beam’s elements, is analyzed for vibration with undamaged and damaged cases. Additionally, a damage threshold is investigated to detect the damage zone and evaluate the accuracy of the detection method. The effectiveness of the improved damage detection method is evaluated through a damage index. This study also proposed using the Spline function to smooth data and perform interpolation. Furthermore, the mode shape curvature is calculated by using two different functions, which are a central difference approximation algorithm and an alternative algorithm, to make a comparison about the effectiveness of damage detection. This paper shows that the mode shape curvature change-based method, using a central difference approximation algorithm, which is combined with the Spline function, gives highly accurate results of the damage detection in both the damage’s occurrence and location.
Damage Detection in Beam-Like Structures Using Mode Shape Curvature Change-Based Method
Lecture Notes in Civil Engineering
Ha-Minh, Cuong (editor) / Pham, Cao Hung (editor) / Vu, Hanh T. H. (editor) / Huynh, Dat Vu Khoa (editor) / Nguyen, Chi-Khai (author) / Truong, Tran-De-Nhat (author) / Tran, Manh-Hung (author) / Nguyen, Anh-Khoa (author) / Phan, Quang-Dan (author) / Duong, Quoc-Anh (author)
International Conference series on Geotechnics, Civil Engineering and Structures ; 2024 ; Ho Chi Minh City, Vietnam
2024-06-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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