Datum
2023-02-13Schlagwort
600 Technik FerroelektrikumSelbsterhitzungEnergieumwandlungEnergy HarvestingLeistungskennzahlMetadata
Zur Langanzeige
Aufsatz
Model-based investigations of ferroelectric energy harvesting with regard to an improvement of life span and operability
Zusammenfassung
A new ferroelectric energy harvesting concept is investigated theoretically, based on a thermo-electromechanical multiscale constitutive framework in connection with the so-called condensed method. Taking advantage of comparatively large changes of strain and polarization due to domain switching, the electric output is higher compared to what is commonly known as
piezoelectric energy harvesting. Dissipative self-heating and augmented damage accumulation, on the other hand, may impede the operability of the harvesting device, in particular if tensile stress is required for depolarization, as suggested by recent works. The new harvesting cycle thus dispenses with tensile stresses and instead exploits the potential of existing residual stresses. It is further investigated to which extent a bias field, commonly applied to support repolarization as an important stage of the cycle, can be omitted, saving considerable effort on the technical implementation. Process parameters are obtained from various simulations by pareto-optimization, considering, inter alia, the effect of ambient temperature.
piezoelectric energy harvesting. Dissipative self-heating and augmented damage accumulation, on the other hand, may impede the operability of the harvesting device, in particular if tensile stress is required for depolarization, as suggested by recent works. The new harvesting cycle thus dispenses with tensile stresses and instead exploits the potential of existing residual stresses. It is further investigated to which extent a bias field, commonly applied to support repolarization as an important stage of the cycle, can be omitted, saving considerable effort on the technical implementation. Process parameters are obtained from various simulations by pareto-optimization, considering, inter alia, the effect of ambient temperature.
Zitierform
In: Smart Materials and Structures Volume 32 / Number 3 (2023-02-13) eissn:1361-665XFörderhinweis
Gefördert im Rahmen des Projekts DEALZitieren
@article{doi:10.17170/kobra-202305198059,
author={Warkentin, Andreas and Behlen, Lennart and Ricoeur, Andreas},
title={Model-based investigations of ferroelectric energy harvesting with regard to an improvement of life span and operability},
journal={Smart Materials and Structures},
year={2023}
}
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2023-05-19T10:00:11Z 2023-05-19T10:00:11Z 2023-02-13 doi:10.17170/kobra-202305198059 http://hdl.handle.net/123456789/14726 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ ferroelectrics piezoelectrics self-heating energy conversion cyclic process multiscale 600 Model-based investigations of ferroelectric energy harvesting with regard to an improvement of life span and operability Aufsatz A new ferroelectric energy harvesting concept is investigated theoretically, based on a thermo-electromechanical multiscale constitutive framework in connection with the so-called condensed method. Taking advantage of comparatively large changes of strain and polarization due to domain switching, the electric output is higher compared to what is commonly known as piezoelectric energy harvesting. Dissipative self-heating and augmented damage accumulation, on the other hand, may impede the operability of the harvesting device, in particular if tensile stress is required for depolarization, as suggested by recent works. The new harvesting cycle thus dispenses with tensile stresses and instead exploits the potential of existing residual stresses. It is further investigated to which extent a bias field, commonly applied to support repolarization as an important stage of the cycle, can be omitted, saving considerable effort on the technical implementation. Process parameters are obtained from various simulations by pareto-optimization, considering, inter alia, the effect of ambient temperature. open access Warkentin, Andreas Behlen, Lennart Ricoeur, Andreas 19 Seiten doi:10.1088/1361-665X/acafba Ferroelektrikum Selbsterhitzung Energieumwandlung Energy Harvesting Leistungskennzahl publishedVersion eissn:1361-665X Number 3 Smart Materials and Structures Volume 32 false 035028
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