Datum
2021-02-18Schlagwort
620 Ingenieurwissenschaften Energy HarvestingPiezoelektrizitätFerroelektrizitätBloch-WandPolarisationMetadata
Zur Langanzeige
Aufsatz
Exploiting ferroelectric and ferroelastic effects in piezoelectric energy harvesting: theoretical studies and parameter optimization
Zusammenfassung
While piezoelectric energy harvesting typically focuses on converting mechanical into electrical energy on the basis of the linear reversible piezoelectric effect, the potential of exploiting the non-linear ferroelectric effect is investigated theoretically in this paper. Due to its dissipative nature, domain switching, on the one hand, is basically avoided in order to prevent mechanical energy from being converted into heat. However, the electrical output, on the other hand, is augmented due to the increased change of electric displacement. In view of these conflicting issues, one main objective in ferroelectric energy harvesting thus is to identify mechanical and electrical process parameters providing appropriate figures of merit. Being an efficient approach to numerically simulate multiphysical polycrystalline material behavior, the so-called condensed method is taken as a basis for the investigation and finally optimization of controllable parameters of ferroelectric energy harvesting cycles. A first idea of a technical implementation taken from literature is considered as cycle of reference, constituting the starting point of the present study, being focused on material aspects rather than on harvesting devices. Different quality assessing parameters are introduced, taking into account general aspects of harvesting efficiency as well as the ratio of irreversible switching-related to reversible piezoelectric contributions. Residual stresses are likewise predicted to give an idea of reliability and the risk of fracture. Two types of cycles and associated optimal process parameters are finally presented.
Zitierform
In: Smart Materials and Structures Volume 30 / Number 3 (2021-02-18) EISSN 1361-665XFörderhinweis
Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem VerlagZitieren
@article{doi:10.17170/kobra-202103043421,
author={Behlen, Lennart and Warkentin, Andreas and Ricoeur, Andreas},
title={Exploiting ferroelectric and ferroelastic effects in piezoelectric energy harvesting: theoretical studies and parameter optimization},
journal={Smart Materials and Structures},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/12662 3000 Behlen, Lennart 3010 Warkentin, Andreas 3010 Ricoeur, Andreas 4000 Exploiting ferroelectric and ferroelastic effects in piezoelectric energy harvesting: theoretical studies and parameter optimization / Behlen, Lennart 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/12662=x R 4204 \$dAufsatz 4170 5550 {{Energy Harvesting}} 5550 {{Piezoelektrizität}} 5550 {{Ferroelektrizität}} 5550 {{Bloch-Wand}} 5550 {{Polarisation}} 7136 ##0##http://hdl.handle.net/123456789/12662
2021-03-19T12:57:05Z 2021-03-19T12:57:05Z 2021-02-18 doi:10.17170/kobra-202103043421 http://hdl.handle.net/123456789/12662 Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlag eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ piezoelectric energy harvesting ferroelectricity domain walls polarization piezoelectrics domain switching condensed method 620 Exploiting ferroelectric and ferroelastic effects in piezoelectric energy harvesting: theoretical studies and parameter optimization Aufsatz While piezoelectric energy harvesting typically focuses on converting mechanical into electrical energy on the basis of the linear reversible piezoelectric effect, the potential of exploiting the non-linear ferroelectric effect is investigated theoretically in this paper. Due to its dissipative nature, domain switching, on the one hand, is basically avoided in order to prevent mechanical energy from being converted into heat. However, the electrical output, on the other hand, is augmented due to the increased change of electric displacement. In view of these conflicting issues, one main objective in ferroelectric energy harvesting thus is to identify mechanical and electrical process parameters providing appropriate figures of merit. Being an efficient approach to numerically simulate multiphysical polycrystalline material behavior, the so-called condensed method is taken as a basis for the investigation and finally optimization of controllable parameters of ferroelectric energy harvesting cycles. A first idea of a technical implementation taken from literature is considered as cycle of reference, constituting the starting point of the present study, being focused on material aspects rather than on harvesting devices. Different quality assessing parameters are introduced, taking into account general aspects of harvesting efficiency as well as the ratio of irreversible switching-related to reversible piezoelectric contributions. Residual stresses are likewise predicted to give an idea of reliability and the risk of fracture. Two types of cycles and associated optimal process parameters are finally presented. open access Behlen, Lennart Warkentin, Andreas Ricoeur, Andreas doi:10.1088/1361-665X/abe2bc Energy Harvesting Piezoelektrizität Ferroelektrizität Bloch-Wand Polarisation publishedVersion EISSN 1361-665X Number 3 Smart Materials and Structures Volume 30 false 35031
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