Manufacture and characterisation of piezoelectric broadband energy harvesters based on asymmetrie bistable laminates

P. Harris, C. Bowen, H. A. Kim

Research output: Contribution to conferencePaper

3 Citations (Scopus)

Abstract

Piezoelectric energy harvesters that convert mechanical vibration into electrical energy are potential power sources for systems such as autonomous wireless sensor networks or safety monitoring devices. However, ambient vibrations generally exhibit multiple time-dependent frequencies, which can include components at relatively low frequencies. This can make typical linear systems inefficient or unsuitable; particularly if the resonant frequency of the device differs from the frequency range of the vibrations it is attempting to harvest. To broaden the frequency response of energy harvesters, a variety of researchers have introduced elastic non-linearity; for example by designing bistable harvesters with two energy wells. Researchers have considered inducing bistability through magnetic interactions, axial loading, and buckling of hinge-like components. An alternative method has been recently considered where a piezoelectric element is attached to bistable laminate plates with two plies of [0/90]T layup to induce large amplitude oscillations. Such harvesting structures have been shown to exhibit high levels of power extraction over a wide range of frequencies. In this paper we will manufacture and characterise the energy harvesting capability of bistable asymmetric laminates coupled to piezoelectric materials. Cantilever configurations will be explored and harvested power levels as a function of load impedance, vibration frequency and amplitude will be assessed. Harvested power levels, natural frequencies and mode shapes will be compared with linear cantilevers of similar geometry and stiffness to assess the benefits of using bistable configurations.

Original languageEnglish
Publication statusPublished - 2014
Event29th Annual American Society for Composites Technical Conference - San Diego, UK United Kingdom
Duration: 8 Sep 201410 Sep 2014

Conference

Conference29th Annual American Society for Composites Technical Conference
CountryUK United Kingdom
CitySan Diego
Period8/09/1410/09/14

Fingerprint

Harvesters
Laminates
Natural frequencies
Piezoelectric materials
Energy harvesting
Hinges
Potential energy
Frequency response
Buckling
Linear systems
Wireless sensor networks
Stiffness
Geometry
Monitoring

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Harris, P., Bowen, C., & Kim, H. A. (2014). Manufacture and characterisation of piezoelectric broadband energy harvesters based on asymmetrie bistable laminates. Paper presented at 29th Annual American Society for Composites Technical Conference, San Diego, UK United Kingdom.

Manufacture and characterisation of piezoelectric broadband energy harvesters based on asymmetrie bistable laminates. / Harris, P.; Bowen, C.; Kim, H. A.

2014. Paper presented at 29th Annual American Society for Composites Technical Conference, San Diego, UK United Kingdom.

Research output: Contribution to conferencePaper

Harris, P, Bowen, C & Kim, HA 2014, 'Manufacture and characterisation of piezoelectric broadband energy harvesters based on asymmetrie bistable laminates' Paper presented at 29th Annual American Society for Composites Technical Conference, San Diego, UK United Kingdom, 8/09/14 - 10/09/14, .
Harris P, Bowen C, Kim HA. Manufacture and characterisation of piezoelectric broadband energy harvesters based on asymmetrie bistable laminates. 2014. Paper presented at 29th Annual American Society for Composites Technical Conference, San Diego, UK United Kingdom.
Harris, P. ; Bowen, C. ; Kim, H. A. / Manufacture and characterisation of piezoelectric broadband energy harvesters based on asymmetrie bistable laminates. Paper presented at 29th Annual American Society for Composites Technical Conference, San Diego, UK United Kingdom.
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