NDLI: A coupled approach for structural damage detection with incomplete measurements

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A coupled approach for structural damage detection with incomplete measurements

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kaouk, Mo Zimmerman, David James, George Cao, Timothy
Copyright Year	2013
Description	This historical work couples model order reduction, damage detection, dynamic residual/mode shape expansion, and damage extent estimation to overcome the incomplete measurements problem by using an appropriate undamaged structural model. A contribution of this work is the development of a process to estimate the full dynamic residuals using the columns of a spring connectivity matrix obtained by disassembling the structural stiffness matrix. Another contribution is the extension of an eigenvector filtering procedure to produce full-order mode shapes that more closely match the measured active partition of the mode shapes using a set of modified Ritz vectors. The full dynamic residuals and full mode shapes are used as inputs to the minimum rank perturbation theory to provide an estimate of damage location and extent. The issues associated with this process are also discussed as drivers of near-term development activities to understand and improve this approach.
File Size	900880
Page Count	14
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20130009151
Archival Resource Key	ark:/13960/t01z96b42
Language	English
Publisher Date	2013-02-11
Access Restriction	Open
Subject Keyword	Structural Mechanics Perturbation Theory Dynamic Structural Analysis Stiffness Matrix Damage Assessment Degrees of Freedom Algorithms Modal Response Coupled Modes Vibration Mode Mathematical Models Structural Health Monitoring Dynamical Systems Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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