Publication detail
Crack propagation analysis in multilayer piezoelectric energy harvester
MACHŮ, Z. MAJER, Z. HADAŠ, Z. ŠEVEČEK, O.
English title
Crack propagation analysis in multilayer piezoelectric energy harvester
Type
conference paper
Language
en
Original abstract
In this work, a special multilayer piezoelectric cantilever energy harvester with active piezo-electric and protective ceramic layers is suggested and studied. Fracture mechanics behavior of such a layered structure is analyzed by means of the analytical model. Namely, the resistance of the structure to propagation of surface cracks upon harmonic vibrations is studied. The apparent fracture toughness of the laminate (which takes thermal residual stresses induced from processing into account) is calculated using the weight function method. The maximal allowable acceleration of the beam´s clamped end, which is applied upon a given forcing frequency and which warrants that the potential surface cracks will not propagate through the multilayer structure, is determined for a suggested configuration of the energy harvester.
English abstract
In this work, a special multilayer piezoelectric cantilever energy harvester with active piezo-electric and protective ceramic layers is suggested and studied. Fracture mechanics behavior of such a layered structure is analyzed by means of the analytical model. Namely, the resistance of the structure to propagation of surface cracks upon harmonic vibrations is studied. The apparent fracture toughness of the laminate (which takes thermal residual stresses induced from processing into account) is calculated using the weight function method. The maximal allowable acceleration of the beam´s clamped end, which is applied upon a given forcing frequency and which warrants that the potential surface cracks will not propagate through the multilayer structure, is determined for a suggested configuration of the energy harvester.
Keywords in English
crack; piezoelectricity; energy harvester; multilayer structure; R-curve; weight function
Released
19.06.2019
Publisher
Elsevier B.V.
Location
Brno
ISBN
9781713807575
ISSN
2452-3216
Book
9th International Conference on Materials Structure and Micromechanics of Fracture (MSMF9)
Volume
23
Edition number
1
Pages from–to
535–540
Pages count
6
BIBTEX
@inproceedings{BUT171255,
author="Zdeněk {Machů} and Zdeněk {Majer} and Zdeněk {Hadaš} and Oldřich {Ševeček},
title="Crack propagation analysis in multilayer piezoelectric energy harvester",
booktitle="9th International Conference on Materials Structure and Micromechanics of Fracture (MSMF9)",
year="2019",
volume="23",
month="June",
pages="535--540",
publisher="Elsevier B.V.",
address="Brno",
isbn="9781713807575",
issn="2452-3216"
}