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        Elliptical Method for Damage Identification in Carbon Fibre Reinforced Polymer Laminates

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        Author
        David-West, Opukuro
        Amafabia, Daerefa-a
        Montalvao, Diogo
        Haritos, George
        Attention
        2299/23165
        Abstract
        Oftentimes, researchers in the area of vibration-based Structural Health Monitoring (SHM) and Damage Detection focused their attention on the global properties of structures, which are the modal frequencies and modal damping factors. However, the effects on the local properties for SHM, that is modal constants, has not been so extremely explored. In this paper, the Elliptical Plane modal identification method is proposed to be used as a Damage identification method itself. It is observed that, when the receptance is plotted in the Elliptical plane, the area of the ellipse formed close to the resonant frequencies (which depends on the modal constants) can be used to detect damage, namely in composite Carbon Fibre Reinforced Polymer (CFRP) rectangular plates. Although a mathematical correlation has not been established yet, results show that the method is sensitive to the presence of damage in the test plates, as the area of the ellipse changes with damage.
        Publication date
        2019-09-29
        Published in
        Advances in Materials Science and Engineering
        Published version
        https://doi.org/10.1155/2019/5237129
        License
        http://creativecommons.org/licenses/by/4.0/
        Other links
        http://hdl.handle.net/2299/23165
        Relations
        School of Physics, Engineering & Computer Science
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