Research Article
Additive Manufacturing of Silencers with Microperforates
Table 2
Measured impedances of the three MPP-gap options at 3500 Hz compared to optimal value.
| ā | Measured | VA One prediction using theory in [15] | Option | Real Part | Imaginary part | Real Part | Imaginary part |
| A | 1.03 | 0.73 | 0.46 | 0.08 |
| B | 0.87 | 0.048 | 0.33 | 0.09 |
| C | 0.43 | 0.18 | 0.10 | 0.028 |
| ā | Optimum according to equation (2) for R=0.0174 m at 3500 Hz | Real Part | Imaginary part | 0.31 | -0.13 |
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