Crack Protective Layered Architecture of Lead-Free Piezoelectric Energy Harvester in Bistable Configuration

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dc.contributor.authorRubeš, Ondřejcs
dc.contributor.authorMachů, Zdeněkcs
dc.contributor.authorŠeveček, Oldřichcs
dc.contributor.authorHadaš, Zdeněkcs
dc.coverage.issue20cs
dc.coverage.volume20cs
dc.date.issued2020-10-14cs
dc.description.abstractKinetic piezoelectric energy harvesters are used to power up ultra-low power devices without batteries as an alternative and eco-friendly source of energy. This paper deals with a novel design of a lead-free multilayer energy harvester based on BaTiO3 ceramics. This material is very brittle and might be cracked in small amplitudes of oscillations. However, the main aim of our development is the design of a crack protective layered architecture that protects an energy harvesting device in very high amplitudes of oscillations. This architecture is described and optimized for chosen geometry and the resulted one degree of freedom coupled electromechanical model is derived. This model could be used in bistable configuration and the model is extended about the nonlinear stiffness produced by auxiliary magnets. The complex bistable vibration energy harvester is simulated to predict operation in a wide range of frequency excitation. It should demonstrate typical operation of designed beam and a stress intensity factor was calculated for layers. The whole system, without presence of cracks, was simulated with an excitation acceleration of amplitude up to 1g. The maximal obtained power was around 2 mW at the frequency around 40 Hz with a maximal tip displacement 7.5 mm. The maximal operating amplitude of this novel design was calculated around 10 mm which is 10-times higher than without protective layers.en
dc.formattextcs
dc.format.extent1-18cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationSENSORS. 2020, vol. 20, issue 20, p. 1-18.en
dc.identifier.doi10.3390/s20205808cs
dc.identifier.issn1424-8220cs
dc.identifier.orcid0000-0001-7463-1217cs
dc.identifier.orcid0000-0002-7975-5750cs
dc.identifier.orcid0000-0003-3442-2650cs
dc.identifier.orcid0000-0002-9097-1550cs
dc.identifier.other165594cs
dc.identifier.researcheridE-8857-2018cs
dc.identifier.researcheridF-8238-2013cs
dc.identifier.researcheridI-4299-2014cs
dc.identifier.scopus56528477600cs
dc.identifier.scopus35320409600cs
dc.identifier.scopus24767676300cs
dc.identifier.urihttp://hdl.handle.net/11012/195586
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofSENSORScs
dc.relation.urihttps://www.mdpi.com/1424-8220/20/20/5808cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1424-8220/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectenergy harvestingen
dc.subjectpiezoelectricsen
dc.subjectbimorphen
dc.subjectlead free ceramicen
dc.subjectbistable energy harvesteren
dc.subjectnonlinear resonatorsen
dc.titleCrack Protective Layered Architecture of Lead-Free Piezoelectric Energy Harvester in Bistable Configurationen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-165594en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:49:12en
sync.item.modts2025.01.17 16:49:59en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav mechaniky těles, mechatroniky a biomechanikycs
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