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Crack identification method for tapered cantilever pipe-type beam using natural frequencies
Abstract A method to detect location and size of a crack in tapered cantilever pipe-type beam using changes in natural frequencies is presented. The boundary conditions of cantilever beam are applied to a general solution for vibrating tapered beam. Then, an equivalent bending stiffness for cracked beam is used to obtain the natural frequencies. Numerical simulations are carried out to construct a set of training patterns of a neural network, and committee of neural networks is employed to identify the crack. Crack identifications are carried out for the 16 damage cases numerically and for the 3 damage cases experimentally. The identified crack locations and sizes agree reasonably well with the exact values.
Crack identification method for tapered cantilever pipe-type beam using natural frequencies
Abstract A method to detect location and size of a crack in tapered cantilever pipe-type beam using changes in natural frequencies is presented. The boundary conditions of cantilever beam are applied to a general solution for vibrating tapered beam. Then, an equivalent bending stiffness for cracked beam is used to obtain the natural frequencies. Numerical simulations are carried out to construct a set of training patterns of a neural network, and committee of neural networks is employed to identify the crack. Crack identifications are carried out for the 16 damage cases numerically and for the 3 damage cases experimentally. The identified crack locations and sizes agree reasonably well with the exact values.
Crack identification method for tapered cantilever pipe-type beam using natural frequencies
Lee, Jong-Won (author)
International Journal of Steel Structures ; 16 ; 467-476
2016-06-01
10 pages
Article (Journal)
Electronic Resource
English
Crack identification method for tapered cantilever pipe-type beam using natural frequencies
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