Research Article
Experiments and Electromechanical Properties of a Broadband Piezoelectric Vibration Energy Harvester
Table 1
Material and geometric parameters of the CPEH.
| | Item | Value |
| | Piezoelectric plate density (kg/m3) | 7450 | | Substrate plate density (kg/m3) | 8920 | | Piezoelectric plate stiffness (GPa) | 28.45 | | Substrate plate stiffness (GPa) | 113 | | Strain constant (C/m) | | | Stress constant (C/m) | | | Vacuum permittivity (F/m) | | | Absolute permittivity (F/m) | 1200 | | Beam length (mm) | 50.8 | | Beam width (mm) | 30.8 | | Piezoelectric plate thickness (mm) | 0.26 | | Substrate plate thickness (mm) | 0.15 | | Damping ratio of elastic magnifier | 0.002 | | Damping ratio of piezoelectric beam | 0.02 | | Tip mass (kg) | 0.011 | | Load resistance (Ω) | 1000 |
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