A spectrum-driven damage identification technique: Application and validation through the numerical simulation of the Z24 Bridge
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- 作者：Maria-Giovanna Masciottaa ; mg.masciotta@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Luí ; s F. Ramosa ; lramos@civil.uminho.pt" class="auth_mail" title="E-mail the corresponding author ; Paulo B. Lourenç ; oa ; pbl@civil.uminho.pt" class="auth_mail" title="E-mail the corresponding author ; Marcello Vastab ; mvasta@unich.it" class="auth_mail" title="E-mail the corresponding author ; Guido De Roeckc ; guido.deroeck@bwk.kuleuven.be" class="auth_mail" title="E-mail the corresponding author
- 关键词：Damage identification ; Spectrum-driven method ; Damage localization index ; Power spectral densities ; Concrete bridges
- 刊名：Mechanical Systems and Signal Processing
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：70-71
- 期：Complete
- 页码：578-600
- 全文大小：1656 K
文摘
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A spectrum-driven approach for damage identification is proposed and validated through a numerical simulation.
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Changes in the system's stiffness caused by evolutionary damage scenarios lead to changes in the system's spectral response.
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The proposed method is based on the difference between damaged and undamaged spectral modes.
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The spectral damage localization index always detects the damage when existing and does not yield false negatives.
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Exciting the structure in the proximity of the damaged region may result in false positives.