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The duty cycle and equivalent time-averaged acoustic power for each measurement point.
| Material | Glass | Ceramic | Brass | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Diameter (mm) | 2 | 3 | 4 | 5 | 6 | 4.8 | 4.8 | |||
| Beam shape | 2±, 3± | π-radial | 3±, 4± | 4±, 5±, 2π-radial | 5±, 6± | 2π-radial | 6±, 7± | 4±, 5± | 5± | 5± |
| Duty cycle | 10.5% | 16.2% | 10.5% | 19.2% | 22.0% | 28.6% | 35.3% | 35.3% | 58.1% | 85.7% |
| time-averaged acoustic power | 1.6 | 2.4 | 1.6 | 2.9 | 3.3 | 4.3 | 5.3 | 5.3 | 8.7 | 12.9 |
