University of Oulu

Jaakko Palosaari, Mikko Leinonen, Jari Juuti, Heli Jantunen, The effects of substrate layer thickness on piezoelectric vibration energy harvesting with a bimorph type cantilever, Mechanical Systems and Signal Processing, Volume 106, 2018, Pages 114-118, ISSN 0888-3270, https://doi.org/10.1016/j.ymssp.2017.12.029

The effects of substrate layer thickness on piezoelectric vibration energy harvesting with a bimorph type cantilever

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Author: Palosaari, Jaakko1; Leinonen, Mikko1; Juuti, Jari1;
Organizations: 1Microelectronics Research Unit, University of Oulu, 90014 Oulu, Finland
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2018051424033
Language: English
Published: Elsevier, 2018
Publish Date: 2020-01-05
Description:

Abstract

In this research four piezoelectric bimorph type cantilevers for energy harvesting were manufactured, measured and analyzed to study the effects of substrate layer thickness on energy harvesting efficiency and durability under different accelerations. The cantilevers had the same dimensions of the piezoelectric ceramic components, but had different thicknesses of the steel substrate (no steel, 30 µm, 50 µm and 75 µm). The cantilevers were tuned to the same resonance frequency with different sizes of tip mass (2.13 g, 3.84 g, 4.17 g and 5.08 g). The energy harvester voltage outputs were then measured across an electrical load near to the resonance frequency (∼40 Hz) with sinusoidal vibrations under different accelerations. The stress exhibited by the four cantilevers was compared and analyzed and their durability was tested with accelerations up to 2.5 g-forces.

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Series: Mechanical systems and signal processing
ISSN: 0888-3270
ISSN-E: 1096-1216
ISSN-L: 0888-3270
Volume: 106
Pages: 114 - 118
DOI: 10.1016/j.ymssp.2017.12.029
OADOI: https://oadoi.org/10.1016/j.ymssp.2017.12.029
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Subjects:
Copyright information: © 2017 Elsevier Ltd. All rights reserved.