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Improving the Performance of Model-Based Damage Detection Methods through the Use of an Updated Analytical Model

Keye, Stefan, Dr. (2006) Improving the Performance of Model-Based Damage Detection Methods through the Use of an Updated Analytical Model. Aerospace Science and Technology, 10 (3), pp. 199-206. Elsevier SAS. DOI: 10.1016/j.ast.2005.11.011.

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Abstract

The advantages of finite-element model updating in association with a model-based method for structural damage localisation are investigated. An approach designed to identify and locate delamination damages in carbon fibre reinforced polymers is used. The method is based on a correlation between measured damage -induced modal damping variations from an elasto-mechanic structure and the corresponding data from a numerical model in order to derive information on the damage location. Using a numerical model enables to locate damage in a three-dimensional structure from experimental data obtained with only a single response sensor. To acquire sufficiently accurate experimental data a polynomial curve fitting technique is used to extract damping parameters from measured frequency responses. It will be shown that in order to achieve a good localisation precision the numerical model must retain a high degree of accuracy and physical consistency.

Document Type:Article
Title:Improving the Performance of Model-Based Damage Detection Methods through the Use of an Updated Analytical Model
Authors:
AuthorsInstitution or Email of Authors
Keye, Stefan, Dr.UNSPECIFIED
Date:April 2006
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:10
DOI:10.1016/j.ast.2005.11.011
Page Range:pp. 199-206
Publisher:Elsevier SAS
Status:Published
Keywords:Model updating; Structural damage; Delamination; Localisation; Carbon fibre reinforced polymers
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignement
DLR - Program:no assignment
DLR - Research theme (Project):other
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Deposited By: Dr.(PH.D.) Stefan Keye
Deposited On:10 Sep 2007
Last Modified:27 Apr 2009 13:16

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