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MAJER, Z. ŠEVEČEK, O. MACHŮ, Z. ŠTEGNEROVÁ, K. KOTOUL, M.
Originální název
Optimization of design parameters of fracture resistant piezoelectric vibration energy harvester
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
This paper is focused on an analysis of a multilayer ceramic-based piezoelectric vibration energy harvester, which could be excited by ambient vibrations or external forces and thus provide a useful source of electricity for modern electronics. The proposed multilayer concept of the energy harvester enables introduction of tensile / compressive residual stresses inside particular layers. These stresses are intended to be used for enhancement of the harvester´s fracture resistance and simultaneously for the improvement of the energy gain upon its operation. A crack arrest, by means of compressive residual stresses (in the outer “non-piezo” layer), will be utilized to this end. Primarily, the extended classical laminate theory (taking into account the piezoelectric characteristics of selected layers) will be used to define various designs of particular layers with various levels of residual stresses inside them. The weight function method is subsequently employed to select a design, which is most resistant to propagation of preexisting cracks. Selected laminate configurations are verified by means of FE simulations. Such analysis is essential for development of new energy harvesting systems formed of new smart materials and structures, which could be integrated in future development processes.
Klíčová slova
Crack propagation, Energy harvesting, Finite element method, Fracture toughness, Laminates, Multilayers, Piezoelectricity, Residual stresses
Autoři
MAJER, Z.; ŠEVEČEK, O.; MACHŮ, Z.; ŠTEGNEROVÁ, K.; KOTOUL, M.
Vydáno
1. 8. 2018
Nakladatel
Trans Tech Publications Ltd
ISBN
9783035713503
Kniha
Key Engineering Materials
Edice
774
ISSN
1013-9826
Periodikum
Key Engineering Materials (print)
Ročník
Stát
Švýcarská konfederace
Strany od
416
Strany do
422
Strany počet
7
URL
https://www.scientific.net/KEM.774.416
BibTex
@inproceedings{BUT151847, author="Zdeněk {Majer} and Oldřich {Ševeček} and Zdeněk {Machů} and Kateřina {Štegnerová} and Michal {Kotoul}", title="Optimization of design parameters of fracture resistant piezoelectric vibration energy harvester", booktitle="Key Engineering Materials", year="2018", series="774", journal="Key Engineering Materials (print)", volume="774", pages="416--422", publisher="Trans Tech Publications Ltd", doi="10.4028/www.scientific.net/KEM.774.416", isbn="9783035713503", issn="1013-9826", url="https://www.scientific.net/KEM.774.416" }