1. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Fully laminated bimorph piezoelectric energy harvester

2. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Circuit diagram for the standard piezoelectric harvester signal rectification and dissipation

3. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Boundaries and energy flow in the energy harvesting system for the two assumptions surrounding energy transferred to the excitation source. Work of excitation source: We. Work done by harvester on load (harvested energy): Wh. Damped energy in harvester: Qd. Energy dissipated by excitation source due to inability to recapture We-: Qe.

4. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Waveform of input power from base excitation

5. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Efficiency for ζ = 0.01 for both conservative and nonconservative cases. Resonances at Ω = 1 and Ω=1+ke2 highlighted with dashed line.

6. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Efficiency for ζ = 0.03 for both conservative and nonconservative cases. Resonances at Ω = 1 and Ω=1+ke2 highlighted with dashed line.

7. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Efficiency for ζ = 0.05 for both conservative and nonconservative cases. Resonances at Ω = 1 and Ω=1+ke2 highlighted with dashed line.

8. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Normalized nondimensional power and efficiency as a function of frequency ratio for ke2=0.6 at ζ = 0.03. Efficiency shown for both cases when excitation source is capable and is not capable of energy recovery.

9. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
(a) Efficiency as a function of ke2/ζ for Ω = 1, both for the conservative and nonconservative cases for all three damping ratios under consideration. (b) Deviations of the efficiencies for Ω=1+ke2 from the Ω = 1 result for the three damping ratios under consideration.

10. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
General diagram of harvester beam cross section

11. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Maximum power for L/w = 1 and cML = 45.6 kg/m3. Low mass and natural frequency shown in (b) shows the results for systems of low mass and natural frequency.

12. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Maximum power for L/w = 5 and cML = 45.6 kg/m3. Low mass and natural frequency shown in (b) shows the results for systems of low mass and natural frequency.

13. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Maximum power for L/w = 10 and cML = 45.6 kg/m3. Low mass and natural frequency shown in (b) shows the results for systems of low mass and natural frequency.

14. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Maximum power for L/w = 5 and cML = 364 kg/m3. Beams that are shorter relative their the mass. (b) Shows the results for systems of low mass and natural frequency.

15. Date of download: 3/2/2018
Copyright © ASME. All rights reserved.
From: The Power and Efficiency Limits of Piezoelectric Energy Harvesting
J. Vib. Acoust. 2013;136(2): doi: /
Figure Legend:
Maximum power for L/w = 5 and cML = 5.69 kg/m3. Beams that are longer relative their the mass. (b) Shows the results for systems of low mass and natural frequency.