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- 01HSJWJ282M15GCCCWHBNSD8V6 classification C3.
- 01HSJWJ282M15GCCCWHBNSD8V6 date "2023".
- 01HSJWJ282M15GCCCWHBNSD8V6 language "eng".
- 01HSJWJ282M15GCCCWHBNSD8V6 type conference.
- 01HSJWJ282M15GCCCWHBNSD8V6 hasPart 01HSJX26SJJ1AS0WA958DG7VSY.pdf.
- 01HSJWJ282M15GCCCWHBNSD8V6 subject "Physics and Astronomy".
- 01HSJWJ282M15GCCCWHBNSD8V6 subject "Technology and Engineering".
- 01HSJWJ282M15GCCCWHBNSD8V6 presentedAt urn:uuid:203418ea-42d4-4ca9-a924-b272d5d9be36.
- 01HSJWJ282M15GCCCWHBNSD8V6 abstract "A proper characterization of the viscoelastic stiffness tensor is essential in structural design and structural health monitoring (SHM). However, the accurate determination of these viscoelastic stiffness coefficients is challenging for anisotropic, heterogeneous, and multi-layer media (e.g. composites). In the present study, a two-stage inversion scheme is proposed to determine the full set of 18 viscoelastic stiffness parameters of composite plates using 3D infrared scanning laser Doppler vibrometry. A 2D Fast Fourier Transform is used to convert the recorded surface velocity response into frequency-wavenumber domain, and a hybrid wave decomposition and correlation method is employed to extract complex-valued wavenumber-frequency pairs that correspond to Lamb waves and shear horizontal plate waves. In view of inversely estimating the orthotropic viscoelastic properties from the measurement data, the semi-analytical finite element method is used as forward model to compute wavenumbers, and is coupled to particle swarm optimization. The accuracy of the proposed method is validated on a series of numerically generated 3D wavefield data, as well as on broadband experimental vibrometry measurements on composite plates. The optimization process for each numerical or experimental case study is repeated 20 times to obtain statistics, and the median and median absolute deviation values are reported. It is shown that the inverted orthotropic viscoelastic properties for the numerical case studies are in close agreement with the target values, showing a mean relative error of less than 2% and 5% on the elastic and viscous properties, respectively. Additionally, the median absolute deviations are negligible showing the robust convergence of the inversion procedure to a global minimum, even when noise is present. These results give the confidence to successfully apply the proposed method to experimental wavefield data to identify the unknown viscoelastic stiffness tensor. The proposed characterization method can be used for various orthotropic viscoelastic materials, including metal sheets, fiber reinforced polymers laminates and wooden plates.".
- 01HSJWJ282M15GCCCWHBNSD8V6 author 199EDBAE-F0EE-11E1-A9DE-61C894A0A6B4.
- 01HSJWJ282M15GCCCWHBNSD8V6 author 7a3d444d-c580-11eb-83d9-88f790baa89e.
- 01HSJWJ282M15GCCCWHBNSD8V6 author urn:uuid:b33408aa-5a7c-45dd-91b7-a80802851c56.
- 01HSJWJ282M15GCCCWHBNSD8V6 dateCreated "2024-03-22T10:50:57Z".
- 01HSJWJ282M15GCCCWHBNSD8V6 dateModified "2024-11-28T00:13:59Z".
- 01HSJWJ282M15GCCCWHBNSD8V6 name "Identification of the orthotropic viscoelastic tensor of composites using 3D infrared scanning laser Doppler vibrometry".
- 01HSJWJ282M15GCCCWHBNSD8V6 pagination urn:uuid:897b1cf7-f0b9-4d14-a2d0-77eac6a2819e.
- 01HSJWJ282M15GCCCWHBNSD8V6 sameAs LU-01HSJWJ282M15GCCCWHBNSD8V6.
- 01HSJWJ282M15GCCCWHBNSD8V6 sourceOrganization urn:uuid:850327d0-85ae-47d3-abe7-01a210a43553.
- 01HSJWJ282M15GCCCWHBNSD8V6 type C3.