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http://dx.doi.org/10.5659/JAIK_SC.2017.33.5.29

Pipe Crack Identification of Elastically Restrained Cantilever-type Beam  

Lee, Jong-Won (Department of Architectural Engineering, Namseoul University)
Publication Information
Journal of the Architectural Institute of Korea Structure & Construction / v.33, no.5, 2017 , pp. 29-36 More about this Journal
Abstract
A method to detect location and size of a pipe crack in elastically restrained cantilever-type beam using changes in natural frequencies is presented. Modal properties of elastically restrained cantilever-type beam are identified by applying the boundary conditions to a general solution. An equivalent bending stiffness for cracked beam based on an energy method is used to identify natural frequencies of elastically restrained cantilever-type thin-walled pipe, which has a through-the-thickness crack, subjected to bending. Then, 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 4 damage cases experimentally, and the identified crack locations and sizes agree reasonably well with the exact values.
Keywords
Crack Identification; Elastically Restraiend; Natural Frequency; Committee of Neural Networks;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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