A5012948264- Innovative Energy Harvesting Technologies
- Smart Materials for Construction
- Wireless Power Transfer Systems
- Acoustic Wave Resonator Technologies
- Ferroelectric and Piezoelectric Materials
- Structural Health Monitoring Techniques
- Advanced Sensor and Energy Harvesting Materials
- Ultrasonics and Acoustic Wave Propagation
Defence Science and Technology Group
2018-2019
Three-dimensional laser Doppler vibrometry is used to quantify the modal composition of guided plate waves generated by relaxor ferroelectric disk actuators a ⟨011⟩ poled Mn-Pb(Mg1/3Nb2/3)O-lead zirconate titanate (PZT) single crystal and ⟨100⟩ piezoelectric PZT, bonded an isotropic plate. Disk are excited using 5.5 cycle Hann-windowed voltage tone-burst at centre frequencies 100, 200, 300 kHz. Measured wave fields processed two-dimensional fast Fourier transform determine radiation pattern...
This paper reports on the design, modelling and measured response of a high frequency vibration energy harvester that uses relaxor ferroelectric transduction. The ultimate goal is to build capable extracting from kilohertz vibrations associated with gear meshing-frequencies Bell 206B-1 Kiowa helicopter main rotor transmission. During operation transmission oil temperature 80°C–100°C. will be mounted externally casing expected operate at elevated temperatures. prototype reported in this...