Development of a Damage Quantification Model for Composite Skin-Stiffener Structures

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Loendersloot, R. and Ooijevaar, T.H. and Boer de, A. and Akkerman, R. (2011) Development of a Damage Quantification Model for Composite Skin-Stiffener Structures. In: SMART'11, July 6-8, 2011, Saarbrucken, Germany.

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Abstract:The development of a model-based approach for a damage severity assessment applied on a complex composite skin structure with stiffeners is presented in this paper. Earlier investigations on composite structures with stiffeners revealed that a vibration based structural health monitoring approach, employing the Modal Strain Energy Damage Index (MSE-DI) algorithm can detect and localise delaminations. The next step, performed in the presented part of the research, is to assess the severity of the damage. It is shown that combining results from a fre-quency based analysis and from a modal strain energy based analysis can enhance the quantifica-tion of the severity estimation. This conclusion was drawn by analysing the effect of small masses that were added at a specific location in to mimic a damage, but maintain reversibility of the dam-age. The use of a numerical model to create a virtual test space was found to be valuable for the interpretation of experimental data
Item Type:Conference or Workshop Item
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Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/77686
Conference URL:http://www.izfp.fraunhofer.de/smart11/
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