PSI - Issue 52

Carlos A. Galán Pinilla et al. / Procedia Structural Integrity 52 (2024) 20–27 Carlos A. Gala´n-Pinilla et al. / Structural Integrity Procedia 00 (2023) 000–000

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for the in-plane direction. The SBFEM implemented with the Gauss-Lobatto-Legendre Spectral Collocation approach has advantages in ease and speed in including the viscoelastic e ff ect in the estimation of dispersion curves. Thee ff ect of the coating in the phase velocity behavior is shifting the cut-o ff frequency to higher values; in the case of the attenuation, the cut-o ff frequency for the di ff erent wave modes trend to reduce to zero as the frequency increases, with the exception of the S 0 mode. The results obtained can be used to design test conditions based on the dispersion, the wave structure, and the attenuation of the wave modes in viscoelastic-coated plates. The implementation presented here could be extended to materials or specimens where the structure has more than two layers.

Acknowledgements

The authors express their gratitude to the MINCIENCIAS for supporting the doctoral study through the bicenten nial scholarship program, as well as to the Universidad Industrial de Santander.

Conflicts of Interest

The authors declare no conflict of interest.

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