The inverse problem on determining the location of a delamination and its severity in composite uniform beams is considered. It is shown that the problem can be solved in terms of delamination-induced changes in the natural frequencies or mode shapes. Delaminations are quantified by the artificial neural networks or random forests. The machine learning methods can predict the delamination status based on parameters of the natural frequency or the Haar wavelet transform coefficients derived from the first mode shape. Simulation studies showed that the combined approach of natural frequencies, Haar wavelets, and random forests produced accurate predictions. The results presented in this article can help one to understand the behavior of more complex structures under similar conditions.
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Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 58, No. 2, pp. 353-368, March-April, 2022. Russian DOI: https://doi.org/10.22364/mkm.58.2.07.
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Jaanuska, L., Hein, H. Delamination Quantification by Haar Wavelets and Machine Learning. Mech Compos Mater 58, 249–260 (2022). https://doi.org/10.1007/s11029-022-10025-2
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DOI: https://doi.org/10.1007/s11029-022-10025-2