Table 2.
Experimental parameters and initial values.
| Specification | Symbol | Initial Values |
|---|---|---|
| Container material | MC | Aluminum alloy 2219 (AL) |
| Wall thickness | h | 3 mm |
| Transducer material | MTX | Piezoelectric ceramic (PZT)-5A |
| Buffer material | MB | PMMA |
| AL acoustic impedance | Z 2 | 32 Mrayl |
| Water acoustic impedance | ZW | 1.48 Mrayl |
| Air acoustic impedance | ZA | Mrayl |
| PMMA acoustic impedance | ZPMMA | 3.26 Mrayl |
| Ultrasound velocity | c | 2775 m/s |
| Transducer diameter | D | 10 mm, 15 mm |
| Working frequency | f 0 | MHz |
| Ultrasonic amplitude | Am | ±15 V |
| Experimental temperature | T | 20 °C |