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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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.
|Title:||Improving the Performance of Model-Based Damage Detection Methods through the Use of an Updated Analytical Model|
|Journal or Publication Title:||Aerospace Science and Technology|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 199-206|
|Keywords:||Model updating; Structural damage; Delamination; Localisation; Carbon fibre reinforced polymers|
|HGF - Research field:||no assignement|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||no assignement|
|DLR - Program:||no assignment|
|DLR - Research theme (Project):||other|
|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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