Table 1 Geometric and material properties of the adaptive metamaterial.
From: Enhanced flexural wave sensing by adaptive gradient-index metamaterials
Geometric properties (in mm) | Material properties (Al) | ||
|---|---|---|---|
L b | 7.4 | Mass density | 2700.0 kg/m3 |
h | 0.4 | Young’s modulus | 69.0 GPa |
L p | 7.0 | Poisson’s ratio | 0.33 |
h p | 0.25 | ||
Material properties (PZT-5A) | |||
Mass density | 7750.0 kg/m3 | ||
Elastic compliance (s11E) | 16.4 × 10−12 m2/N | ||
Dielectric constant ( | 1700.0 | ||
Piezoelectric constant (d31) | 171.0 × 10−12 pC/N | ||
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