Research Article
Development of Traveling Wave Actuators Using Waveguides of Different Geometrical Forms
Table 1
Properties of the actuator materials.
| | Material properties | Piezoceramic PZT-8 | Aluminum |
| | Young’s modulus [N/m2] | | 7.0 × 1011 |
| | Poison’s ratio | | 0.3 |
| | Density [kg/m3] | 7700 | 2700 |
| | Permittivity, ×10−7 [F/m] | = 11.42; = 8.85 | |
| | Piezoelectric matrix [C/m2] | = −18.01; = 29.48; = 10.34 | |
| | Elasticity matrix, ×1010 [N/m2] | = 14.68; = 8.108; = 8.105; = 13.17; = 3.29; = 3.14 | |
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