Article (Scientific journals)
Comparison of different excitationand data sampling-methods in structural health monitoring
Maas, Stefan; Nguyen, Viet Ha; Kebig, Tanja et al.
2019In Civil Engineering Design, 1, p. 10-16
Peer reviewed
 

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Keywords :
ambient excitation; dynamic damage indicators; structural health monitoring; forced excitation; modal analysis
Abstract :
[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.
Disciplines :
Civil engineering
Mechanical engineering
Author, co-author :
Maas, Stefan ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Nguyen, Viet Ha ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Kebig, Tanja ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Schommer, Sebastian ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
Zürber, Arno
External co-authors :
yes
Language :
English
Title :
Comparison of different excitationand data sampling-methods in structural health monitoring
Publication date :
March 2019
Journal title :
Civil Engineering Design
Volume :
1
Pages :
10-16
Peer reviewed :
Peer reviewed
Focus Area :
Physics and Materials Science
Available on ORBilu :
since 04 April 2019

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