Table 1 Design parameters of proposed GOHCGOHC with different HC thickness.
From: Graphite-oxide hybrid multi-degree of freedom resonator metamaterial for broadband sound absorption
Sample | Structure | GO foil thickness (μm) | HC core thickness (mm) | Total thickness (mm) |
|---|---|---|---|---|
GOHCGOHC-30 | GO foil + HC + GO foil + HC | 30 | 15 | 30 |
GOHCGOHC-50 | GO foil + HC + GO foil + HC | 30 | 25 | 50 |
GOHCGOHC-70 | GO foil + HC + GO foil + HC | 30 | 35 | 70 |
