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• W4307939007 endingPage "8336" @default.
• W4307939007 startingPage "8336" @default.
• W4307939007 abstract "Axially loaded beam-like structures represent a challenging case study for unsupervised learning vibration-based damage detection. Under real environmental and operational conditions, changes in axial load cause changes in the characteristics of the dynamic response that are significantly greater than those due to damage at an early stage. In previous works, the authors proposed the adoption of a multivariate damage feature composed of eigenfrequencies of multiple vibration modes. Successful results were obtained by framing the problem of damage detection as that of unsupervised outlier detection, adopting the well-known Mahalanobis squared distance (MSD) to define an effective damage index. Starting from these promising results, a novel approach based on unsupervised learning data clustering is proposed in this work, which increases the sensitivity to damage and significantly reduces the uncertainty associated with the results, allowing for earlier damage detection. The novel approach, which is based on Gaussian mixture model, is compared with the benchmark one based on the MSD, under the effects of an uncontrolled environment and, most importantly, in the presence of real damage due to corrosion." @default.
• W4307939007 created "2022-11-06" @default.
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• W4307939007 date "2022-10-30" @default.
• W4307939007 modified "2023-10-14" @default.
• W4307939007 title "A Damage Detection Approach for Axially Loaded Beam-like Structures Based on Gaussian Mixture Model" @default.
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• W4307939007 doi "https://doi.org/10.3390/s22218336" @default.
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• W4307939007 hasPublicationYear "2022" @default.
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