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- W4386636637 abstract "A contactless method based on acousto-elastic transmission matrix analysis is proposed to recover the modal properties of weakly damped mechanical structures. The matrix is acquired using eight loudspeakers and a laser vibrometer probing hundreds of points. The matrix analysis is particularly interesting in case of overlapping modes. The proposed measurement set-up and associated data processing using the Singular Value Decomposition are applied to two symmetric samples, a gear and two monobloc impellers. Further analysis are performed taking advantage of their particular modal behavior, common to many rotationally symmetric structures. The method also enables to clearly identify the effect of damages on the modal organization. Additionally, the setup can also be used to excite specific patterns on the elastic structures. Finally, the acousto-elastic results are compared to the ones obtained with a classical impact hammer and high resolution algorithms." @default.
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- W4386636637 date "2023-09-01" @default.
- W4386636637 modified "2023-10-18" @default.
- W4386636637 title "Decomposition of acousto-elastic matrices for contactless modal analysis and vibration shaping" @default.
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- W4386636637 doi "https://doi.org/10.1016/j.jsv.2023.118032" @default.
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