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Fault Detection Method of Pipe-type Cantilever Beam with a Tip Mass
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 Title & Authors
Fault Detection Method of Pipe-type Cantilever Beam with a Tip Mass
Lee, Jong Won;
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 Abstract
A crack identification method using an equivalent bending stiffness and natural frequency for cracked beam is presented. Modal properties of cantilever beam with a tip mass is 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 cantilever thin-walled pipe with a tip mass, which has a through-the-thickness crack, subjected to bending. The identified natural frequencies of the cracked beam are used in constructing training patterns of neural networks. Then crack location and size are identified using a committee of the neural networks. Crack detection was carried out for an example beam using the proposed method, and the identified crack locations and sizes agree reasonably well with the exact values.
 Keywords
Crack Identification;Tip Mass;Natural Frequency;
 Language
Korean
 Cited by
 References
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