A visco-electric device for vibration energy harvesting on rotorcraft

Raheel S. Mahmood, Edward Smith, George A. Lesieutre

Research output: Contribution to conferencePaper

Abstract

A vibration energy harvester concept features a damped mechanical oscillator tuned to a specified excitation frequency of the vibrating structure on which it is installed. Vibration energy absorbed through the base of the harvester is dissipated as thermal energy by a viscoelastic material subject to harmonic strain at its natural frequency. Conduction of the dissipated heat to a thermal conductor results in a temperature increase of the conductor. Heat flow from the conductor element to an ambient-temperature heat sink is used to generate electrical power by means of a thermoelectric generator placed between the heated and ambient-temperature surfaces. A realization of the visco-electric harvester design is proposed, and an engineering model is developed to describe its behavior. The thermal energy output of the elastomer and steady-state temperature of the conductor element are calculated for different sets of physical properties and used to predict the electrical energy output of the device. A nominal steady-state electrical energy output of 3 mW at 4.1 VDC is predicted for a notional device.

Original languageEnglish (US)
StatePublished - Feb 28 2014
Event22nd AIAA/ASME/AHS Adaptive Structures Conference - SciTech Forum and Exposition 2014 - National Harbor, MD, United States
Duration: Jan 13 2014Jan 17 2014

Other

Other22nd AIAA/ASME/AHS Adaptive Structures Conference - SciTech Forum and Exposition 2014
CountryUnited States
CityNational Harbor, MD
Period1/13/141/17/14

Fingerprint

Energy harvesting
Vibrations (mechanical)
Harvesters
Thermal energy
Oscillators (mechanical)
Temperature
Heat sinks
Elastomers
Natural frequencies
Physical properties
Heat transfer
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Building and Construction

Cite this

Mahmood, R. S., Smith, E., & Lesieutre, G. A. (2014). A visco-electric device for vibration energy harvesting on rotorcraft. Paper presented at 22nd AIAA/ASME/AHS Adaptive Structures Conference - SciTech Forum and Exposition 2014, National Harbor, MD, United States.
Mahmood, Raheel S. ; Smith, Edward ; Lesieutre, George A. / A visco-electric device for vibration energy harvesting on rotorcraft. Paper presented at 22nd AIAA/ASME/AHS Adaptive Structures Conference - SciTech Forum and Exposition 2014, National Harbor, MD, United States.
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Mahmood, RS, Smith, E & Lesieutre, GA 2014, 'A visco-electric device for vibration energy harvesting on rotorcraft' Paper presented at 22nd AIAA/ASME/AHS Adaptive Structures Conference - SciTech Forum and Exposition 2014, National Harbor, MD, United States, 1/13/14 - 1/17/14, .

A visco-electric device for vibration energy harvesting on rotorcraft. / Mahmood, Raheel S.; Smith, Edward; Lesieutre, George A.

2014. Paper presented at 22nd AIAA/ASME/AHS Adaptive Structures Conference - SciTech Forum and Exposition 2014, National Harbor, MD, United States.

Research output: Contribution to conferencePaper

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Mahmood RS, Smith E, Lesieutre GA. A visco-electric device for vibration energy harvesting on rotorcraft. 2014. Paper presented at 22nd AIAA/ASME/AHS Adaptive Structures Conference - SciTech Forum and Exposition 2014, National Harbor, MD, United States.