Optimization of the electro-mechanical response of the multilayer piezoelectric energy harvester

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130484" target="_blank" >RIV/00216305:26210/18:PU130484 - isvavai.cz</a>
Result on the web
<a href="https://mechatronika.fel.cvut.cz/" target="_blank" >https://mechatronika.fel.cvut.cz/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Optimization of the electro-mechanical response of the multilayer piezoelectric energy harvester
Original language description
In this contribution, a design of novel cantilever beam energy harvester, composed of several ceramic layers with introduced high residual stresses, is proposed. The main aim of residual stresses is to protect the piezoelectric layer from cracking during the service of the harvester. A way to optimize composition of the multilayer energy harvester to receive both high apparent fracture toughness of the structure and simultaneously high electrical power of the harvester during its operation is presented. Both an analytical and a numerical model of the vibrational energy harvester are developed for this purpose. The increased resistance to fracture is achieved by means of high compressive stresses in the external ceramic layers. The electrical power output of the harvester is further optimized with respect to connected resistive load and excitation acceleration of vibrations. It was found that the optimal resistive load also leads to lowest mechanical stresses in particular laminate layers.
Czech name
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Czech description
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Project
<a href="/en/project/GA17-08153S" target="_blank" >GA17-08153S: Novel material architectures for SMART piezoceramic electromechanical converters</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 2018 18th International Conference on Mechatronics – Mechatronika (ME)
ISBN
978-80-214-5543-6
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
143-148
Publisher name
Brno University of Technolgy, 2018
Place of publication
Brno
Event location
Brno
Event date
Dec 5, 2018
Type of event by nationality
CST - Celostátní akce
UT code for WoS article
000465104200023

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