[en] A damage diagnosis technique based on changes in dynamically measured flexibility and stiffness of structures is presented. The objective is not only to detect the existence of damage, but also to locate it. The covariance-driven subspace identification technique is applied to identify structural modal parameters, and these are then used to assemble the flexibility matrix of dimensions corresponding to the measured degrees of freedom. The corresponding stiffness matrix is obtained by a pseudo-inversion of the flexibility matrix. Damage localization is achieved by a combined assessment of changes in these two measured matrices in moving from the reference state to the damaged state. Since the location of damage is given directly by the position of sensors, no geometrical measurements and finite element models are needed. When using output-only measurement data, an approximate mass-normalization of the mode shapes is adopted and an appropriate correction procedure is proposed. Numerical and experimental applications are considered, in order to examine the efficiency and limitations of the presented method.
Disciplines :
Civil engineering
Author, co-author :
Yan, Ai Main; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Golinval, Jean-Claude ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures
Language :
English
Title :
Structural damage localization by combining flexibility and stiffness methods
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
M. Basseville M. Abdelghani A. Benveniste Subspace-based fault detection algorithms for vibration monitoring Automatica 36 2000 101-109
P. De Boe J.C. Golinval Principal component analysis of piezo-sensor array for damage localization Struct Healthy Monitoring 2 2 2002 137-144
H. Sohn C.F. Farrar Damage diagnosis using time series analysis of vibration signals Smart Mater Struct 10 2000 1-6
K. Worden G. Manson N.R.J. Fieller Damage detection using outlier analysis J Sound Vib 229 3 2000 647-667
A.M. Yan P. De Boe J.C. Golinval Damage diagnosis of structures by Kalman model via subspace identification approach Struct Health Monitoring 3 2 2004 103-119
C. Zang M.I. Friswell M. Imeregun Structural damage detection using independent component analysis Struct Healthy Monitoring 3 1 2004 69-83
W.X. Ren G. De Roeck Structural damage identification using modal data. I: Simulation verification; II Test verification J Struct Eng 128 2002 87-104
A.M. Yan J.C. Golinval FE model updating based on experimental FRF data using a general FE code European J Mech Environ Eng 48 3 2002 149-162
D.C. Zimmerman M. Kaout Structural damage detection using a minimum rank update theory J Vibr Acous 116 1994 222-231
J.M. Ko K.K. Chak J.Y. Wang Y.Q. Ni T.H.T. Chan Formulation of an uncertainty model relating modal parameters and environmental factors by using long-term monitoring data In: S.C. Liu editor Smart systems and nondestructive evaluation for civil infrastructures SPIE vol. 5057 2003
Sohn H, Worden K, Farrar CF. Novelty detection under changing environmental conditions. In: SPIE's 8th annual international symposium on smart structures and materials. 2001
Yan A.M., Golinval J.C., Peeters B., De Roeck G. A comparative study on damage detection of Z24-Bridge: One-year monitoring with varying environmental conditions. In: Proceedings of 2nd Euro. workshop on structural health monitoring. 2004, p. 791-799
A.K. Pandey M. Biswas Damage detection in structures using changes in flexibility J Sound Vib 169 1 1994 3-17
A.K. Pandey M. Biswas Damage diagnosis of truss structures by estimation of flexibility change Int J Anal Exp Modal Anal 10 2 1995 104-117
T. Toksoy A.E. Aktan Bridge-condition assessment by modal flexibility Exp Mech 1994 271-278
Farrar CR, Jauregui D. Damage detection algorithms applied to experimental and numerical data from the I-40 bridge. LA-13074-MS Report. 1996. http://www.lanl.gov/projects/damage_id
N. Stubbs J.T. Kim Damage location in structures without baseline modal parameters AIAA J 34 8 1996 1644-1649
Y.Q. Ni J.M. Ko X.T. Zhou Damage region identification of cable-supported bridges using neural network-based novelty In: F.-K. Chang editor Structural health monitoring - the demands and challenges 2001 CRC Press 449-458
D. Bernal A subspace approach for the for the localization of damage in stochastic systems In: F.-K. Chang editor Structural health monitoring - the demands and challenges 2001 CRC Press 899-908
D. Bernal B. Gunes A flexibility-based approach for the localization and quantification of damage: Application in a benchmark structure In: F.-K. Chang editor Structural health monitoring - the demands and challenges 2001 CRC Press 680-689
P. Van Overschee B. De Moor Subspace identification for linear systems: theory implementation - applications 1996 Kluwer Academic Publishers Dordrecht (Netherlands)
De Cock K, Peeters B, Vecchio A, Van der Auweraer H, De Moor B. Subspace system identification for mechanical engineering. In: Proceedings of ISMA 2002. 2002, p. 1333-52
L. Hermans H. Van der Auweraer Modal testing and analysis of structures under operational conditions: Industrial applications Mech Syst Signal Process 13 2 1999 193-216
A.M. Yan P. De Boe J.C. Golinval Structural damage location by combined analysis of measured flexibility and stiffness In: A. Zingoni editor Progress in structural engineering, mechanics and computation 2004 AA Balkema/Taylor and Francis London 635-640
Similar publications
Sorry the service is unavailable at the moment. Please try again later.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
