Assessment of structural integrity through coupled vibration

Liu, D., Gurgenci, H. and Veidt, M. (2004). Assessment of structural integrity through coupled vibration. In: Atrens, A., Boland, J. N., Clegg, R. and Griffiths, J. R., Proceedings of the Structura Integrity and Fracture International Conference (SIF'04). Structural Integrity and Fracture International Conference (SIF'04), Brisbane, Australia, (221-227). 26-29 September, 2004.

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Author Liu, D.
Gurgenci, H.
Veidt, M.
Title of paper Assessment of structural integrity through coupled vibration
Conference name Structural Integrity and Fracture International Conference (SIF'04)
Conference location Brisbane, Australia
Conference dates 26-29 September, 2004
Proceedings title Proceedings of the Structura Integrity and Fracture International Conference (SIF'04)
Place of Publication Australia
Publisher Australian Fracture Group
Publication Year 2004
Sub-type Fully published paper
ISBN 1864997605
Editor Atrens, A.
Boland, J. N.
Clegg, R.
Griffiths, J. R.
Start page 221
End page 227
Total pages 7
Language eng
Abstract/Summary A vibration-based technique is employed to evaluate the structural integrity using mode coupling property. The methodology is first demonstrated on a single hollow section beam by analytical simulation and experimental validation. A welded test rig with a fatigue crack is then investigated by applying this technique. The test rig consists of chord members cross-connected by smaller branches. The fatigue crack is generated by a reciprocating mechanism. The proposed approach discriminates the cracked member through the emergence of coupled mode that is observable on FRF plots. The test results of the structure under intact and cracked states are presented. It is suggested that this method has the potential to detect cracks in welded structures.
Subjects 0905 Civil Engineering
Keyword Coupled vibration
Structural integrity
Fatigue
Crack
Testing
Q-Index Code E1

 
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Created: Mon, 20 Dec 2004, 10:00:00 EST by Lucy Peachey on behalf of Faculty Of Engineering, Architecture & Info Tech