Research Article
Sound Attenuation of Membranes Loaded with Square Frame-Shaped Masses
Table 1
Physical properties of membrane material [
16].
| Property | Polyetherimide (PEI) |
| Mass density (kg/m3) | 1200 | Young’s modulus (Pa) | | Poisson ratio | 0.36 | Thickness (mm) | 0.076 | Length (mm) | 27.4 | Tension (Pa) | |
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