Reference : Comparison of different excitationand data sampling-methods in structural health moni...
Scientific journals : Article
Engineering, computing & technology : Civil engineering
Engineering, computing & technology : Mechanical engineering
Physics and Materials Science
http://hdl.handle.net/10993/39281
Comparison of different excitationand data sampling-methods in structural health monitoring
English
Maas, Stefan mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Nguyen, Viet Ha mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Kebig, Tanja mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Schommer, Sebastian mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Zürber, Arno []
Mar-2019
Civil Engineering Design
1
10-16
Yes
International
[en] ambient excitation ; dynamic damage indicators ; structural health monitoring ; forced excitation ; modal analysis
[en] Structural Health Monitoring with analysis of dynamic characteristics intends to
detect stiffness changes caused by damage. It can be performed by vibrational tests
resulting to modal parameters, that is, eigenfrequencies, damping, modeshapes, or
modal masses. Those parameters are themselves informational and even allow often
deducing the stiffness matrix. Based on that, it is possible to identify and to localize
changes in the stiffness matrix due to damage, that is, localization and quantification
of damage. However, changing test conditions, like ambient temperature or excitation force or existing nonlinearities of concrete, show important influence on damage
indicators and hence need compensation prior to damage detection. Considering this
background, this article focuses on comparing ambient excitation to forced excitation
including appropriate exciters. Furthermore, continuous monitoring is discussed vs
discrete testing in distinct time-intervals. The intention of the comparison is to give
an overview, that is, helpful for choosing appropriate measurement technique for the
sake of correct damage detection subsequently.
http://hdl.handle.net/10993/39281
https://doi.org/10.1002/cend.201800002

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