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Guided waves in FG plates: appearing phase velocity gaps
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Journal Article
Guided waves in FG plates: appearing phase velocity gaps
2022
Overview
For the first time, velocity gaps in the dispersion portraits of guided waves propagating in functionally graded (FG) traction-free plates were revealed, meaning appearance of the “forbidden” phase velocity range where guided waves do not exist. The observed phenomenon does not occur in homogeneous isotropic or anisotropic plates. The analysis is based on the modified Cauchy sextic formalism and exponential matrix method. The presence of “forbidden” phase velocities may be essential in the non-destructive diagnostics of functionally graded media by acoustic methods along with applications in theoretical geophysics.
Publisher
Springer Nature B.V
