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Shock and Vibration
Volume 15, Issue 3-4, Pages 207-215
http://dx.doi.org/10.1155/2008/841715

Feature Comparison in Structural Health Monitoring of a Vehicle Crane

J. Kullaa and T. Heine

Helsinki Polytechnic Stadia, P.O. Box 4021, FIN-00099, Helsinki, Finland

Received 29 April 2007; Revised 29 April 2007

Copyright © 2008 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Vibration-based structural health monitoring of a vehicle crane was studied. The performance of different features to detect damage was investigated after eliminating the normal operational variations using factor analysis. Using eight accelerometers, ten AR parameters from each record were identified for damage detection. Also transmissibilities between sensors were estimated. Damage was introduced with additional masses at different locations of the structure. All damage cases could be detected from either features using control charts, but transmissibilities proved to be more sensitive to damage than the AR coefficients.