Maas, Stefan[University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Feb-2014
Damage Detection in Civil Engineering Structure Considering Temperature Effect
Firkret, Necati Catbas
Springer International Publishing
187-196
No
No
International
978-3-319-04545-0
International Modal Analysis Conference IMAC XXXII Dynamics of Coupled Structures
from 3-2-2014 to 6-2-2014
Society of Experimental Mechanics, Inc
Orlando
USA
[en] temperature effect ; damage, identification ; detection, statistics
[en] This paper concerns damage identification of a bridge located in Luxembourg. Vibration responses were captured from measurable and adjustable harmonic swept sine excitation and hammer impact. Different analysis methods were applied to the data measured from the structure showing interesting results. However, some difficulties arise, especially due to environmental influences (temperature and soil-behaviour variations) which overlay the structural changes caused by damage. These environmental effects are investigated in detail in this work. First, the modal parameters are identified from the response data. In the next step, they are statistically collected and processed through Principal Component Analysis (PCA) and Kernel PCA. Damage indexes are based on outlier analysis.