Guided wave data - To be updated upon acceptance

Research Hypothesis and Data Description

This dataset validates the hypothesis that Least Attenuated Wave (LAW) modes can bridge the gap between long-range inspection and high-resolution damage detection in anisotropic viscoelastic composite laminates.

What the data shows:

Complete dispersion curves (phase/group velocity) and attenuation coefficients for [0/Φ/0] laminates (Φ = 0° to 90°)

Identification of quasi-isotropic LAW modes above 5 MHz with weak dispersion and 1-2 mm wavelengths

Systematic comparison between Kelvin-Voigt and hysteretic viscoelastic models

Attenuation and wavelength maps as functions of frequency and fiber orientation

Notable findings:

LAW modes exhibit minimal sensitivity to fiber orientation above 5 MHz

Correlation between Minimum Group Velocity (MGV) frequencies and attenuation maxima

Formation of viscoelastic coupled modes in specific frequency-orientation ranges

Data collection methodology:
Data was generated numerically using the Legendre polynomial method for guided wave propagation in multilayered anisotropic viscoelastic media. The computational framework implements complex stiffness coefficients for both Kelvin-Voigt (frequency-dependent) and hysteretic (frequency-independent) damping models.

Data interpretation and usage:

Use dispersion curves to identify propagative modes at specific frequency-orientation pairs

Consult attenuation maps to select optimal inspection parameters for desired propagation distance

Reference wavelength maps to determine minimum detectable defect size (typically > λ/2)

Employ the data to design hierarchical SHM systems combining low-frequency global monitoring with high-frequency local inspection

The datasets enable reproduction of all figures and results presented in the manuscript, providing a comprehensive foundation for multi-scale structural health monitoring strategy development.