Reconstruction Method for Damage Detection in Beams Based on Natural Frequency and Antiresonant Frequency Measurements
Publication: Journal of Engineering Mechanics
Volume 136, Issue 3
Abstract
This paper deals with a dynamic method for damage detection in beams. Under the assumption that the damaged beam is a perturbation of the undamaged one, it is shown that natural frequency and antiresonant frequency shifts induced by structural damage contain information on certain generalized Fourier coefficients of the stiffness variation caused by the degradation. A reconstruction method based on this property is proposed to solve the inverse problem. Cases with pseudoexperimental and experimental data are discussed. The results are in good agreement with the theory, provided that average frequency and antiresonant frequency shifts are bigger than modeling/measurement errors.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 136 • Issue 3 • March 2010
Pages: 329 - 344
Copyright
© 2010 ASCE.
History
Received: Nov 20, 2007
Accepted: Oct 26, 2009
Published online: Feb 12, 2010
Published in print: Mar 2010
Notes
Note. Associate Editor: Erik A. Johnson
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