Betts, David N., Bowen, Christopher R., Inman, Daniel J., Weaver, Paul M. and Kim, Alicia  ORCID: https://orcid.org/0000-0002-5629-2466
2014.
Investigation of geometries of bistable piezoelectric-laminate plates for vibration-based energy harvesting.
Presented at: SPIE Conference on Smart Structures and Materials,
San Diego, CA, USA,
10-13 March 2014.
Published in: Liao, Wei-Hsin ed.
Proceedings of SPIE - The International Society for Optical Engineering.
, vol.9057
SPIE,
10.1117/12.2044771
|
Abstract
The need for reduced power requirements for small electronic components, such as wireless sensor networks, has prompted interest in recent years for energy harvesting technologies capable of capturing energy from broadband ambient vibrations. Encouraging results have been reported for an arrangement of piezoelectric layers attached to carbon fiber / epoxy laminates which possess bistability by virtue of their specific asymmetric stacking sequence. The inherent bistability of the underlying structure is exploited for energy harvesting since a transition from one stable configuration to another, or ‘snap-through’, is used to repeatedly strain the surface-bonded piezoelectric and generate electrical energy. Existing studies, both experimental and modelling, have been limited to simple geometric laminate shapes, restricting the scope for improved energy harvesting performance by limiting the number of design variables. In this paper we present an analytical model to predict the static shapes of laminates of any desired profile, validated experimentally using a digital image correlation system. Good accuracy in terms of out-of-plane displacements (5-7%) are shown in line with existing square modelling results. The static model is then mapped to a dynamics model and used to compare results against an experimental study of the harvesting performance of an example arbitrary geometry piezoelectric-laminate energy harvester.
| Item Type: | Conference or Workshop Item - published (Paper) |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Additional Information: | Volume Title: Active and Passive Smart Structures and Integrated Systems 2014 Article no: 90571E |
| Publisher: | SPIE |
| ISBN: | 9780819499837 |
| ISSN: | 0277-786X |
| Last Modified: | 10 Sep 2026 14:49 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/91353 |
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