Novel layered architecture based on Al2O3/ZrO2/BaTiO3 for SMART piezoceramic electromechanical converters

Tofel, Pavel; Machů, Zdeněk; Chlup, Zdeněk; Hadraba, Hynek; Drdlík, Daniel; Ševeček, Oldřich; Majer, Zdeněk; Holcman, Vladimír; Hadaš, Zdeněk

doi:10.1140/epjst/e2019-800153-0

Cited by 12 publications

(5 citation statements)

References 32 publications

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“…Outer layers with compressive stresses can thus act as protective layers of the inner piezo layers. Such architecture was suggested by authors in the previous work (Majer et al, 2018;Tofel et al, 2019) where a novel layered architecture based on ZrO 2 /Al 2 O 3 /BaTiO 3 materials is discussed. The presence of residual stresses in the structure, new materials, and thicknesses of particular layers are new additional design parameters in comparison with commercially sold designs.…”

Section: Introductionmentioning

confidence: 76%

“…As already mentioned in the ''Introduction'' section, recently, a novel multilayer energy harvester with protective layers bringing pre-straining to the piezoceramics was reported in the previous works (Majer et al, 2018;Tofel et al, 2019). Here, the aim is to design a structure with the highest possible resistance to surface crack propagation and also to design a structure generating the highest possible electrical power output upon steady-state vibrations.…”

Section: Searching For An Optimal Design Of the Energy Harvestermentioning

confidence: 99%

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Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses

Machů

Ševeček

Hadaš

et al. 2020

Journal of Intelligent Material Systems and Structures

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The article focuses on a modeling and subsequent optimization of a novel layered architecture of the vibration piezoceramic energy harvester composed of ZrO2/Al2O3/BaTiO3 layers and containing thermal residual stresses. The developed analytical/numerical model allows to determine the complete electromechanical response and the apparent fracture toughness of the multilayer vibration energy harvester, upon consideration of thermal residual stresses and time-harmonic kinematic excitation. The derived model uses the Euler–Bernoulli beam theory, Hamilton’s variational principle, and a classical laminate theory to determine the first natural frequency, steady-state electromechanical response of the beam upon harmonic vibrations, and also the mechanical stresses within particular layers of the harvester. The laminate apparent fracture toughness is computed by means of the weight function approach. A crucial point is the further optimization of the layered architecture from both the electromechanical response and the fracture resistance point of view. Maximal allowable excitation acceleration of the harvester upon which the piezoelectric layer will not fail is determined. It makes possible to better use the harvester’s capabilities in a given application and simultaneously guarantee its safe operation. Outputs of the derived analytical model were validated with finite element method simulations and available experimental results, and a good agreement between all approaches was obtained.

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Section: Introductionmentioning

confidence: 76%

Section: Searching For An Optimal Design Of the Energy Harvestermentioning

confidence: 99%

Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses

Machů

Ševeček

Hadaš

et al. 2020

Journal of Intelligent Material Systems and Structures

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“…The geometrical factor f for thin tape samples was calculated from a 3D numerical model using the FEM software Abaqus/CAE6.13 (Dassault Systemes Simulia Corp., Providence, RI, USA). For the simulation, the rectangular samples and the balls were modeled using 3D deformable elements of the C3D8R type [35]. The loading speed was set to 0.5 mm.min −1 .…”

Section: Evaluation Methodsmentioning

confidence: 99%

Thin high-strength zirconia tapes with extreme flexibility

Šťastný

Chlup

Roupcová

et al. 2021

Journal of Asian Ceramic Societies

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The yttria stabilized zirconia ceramics (Y-TZP) are known for their high fracture toughness and high strength. Due to their excellent mechanical properties, the thin zirconia tapes can possess extraordinary behavior -extreme flexibility. In the present work, we introduce an adaptation of gel-tape casting method for the preparation of thin, high-strength zirconia tapes from waterbased suspensions. Fine ceramic powder with a particle size of around 100 nm was used. The negative effect of sodium ions on the strength and toughness of sintered ceramic samples was revealed and explained. Ceramic tapes with a thickness of 190 µm with as-sintered surfaces reached a characteristic biaxial strength of 1805 MPa. The huge elastic deformation of ceramic tapes was demonstrated in a 3-point bend test, and a bending radius of 25 mm for a 75 µm thick tape was reached.

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“…Also, layered ceramics can improve toughness and enhance the energy dissipation even further by guiding and deflecting the cracks [31]. The strengthening mechanism of carbide-, boride-nitride-, and oxide-based layered materials [32][33][34][35][36][37][38][39] with various structural designs can be divided into two categories, depending on the strength of the interfacial bond: for layered ceramics with strong interfaces, cracks are mainly deflected due to residual stresses in the compressive layers [33,35,40,41]; for layered ceramics with weak interfaces, delamination cracks and crack deflection are the source of energy dissipation during fracture, and interfacial fracture resistance is introduced to predict delamination and crack propagation [31,42].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Layered SiC/C/Si/MeSi2/Me Ceramic–Metal Composites via Liquid Silicon Infiltration of Metal–Carbon Matrices

Kaledin,

Shikunov,

Zubareva

et al. 2024

Materials

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The growing demand for composite materials capable of enduring prolonged loads in high-temperature and aggressive environments presents pressing challenges for materials scientists. Ceramic materials composed of silicon carbide largely possess high mechanical strength at a relatively low density, even at elevated temperatures. However, they are inherently brittle in nature, leading to concerns about their ability to fracture. The primary objective of this study was to develop a novel technique for fabricating layered composite materials by incorporating SiC-based ceramics, refractory metals, and their silicides as integral constituents. These layered composites were produced through the liquid-phase siliconization method applied to metal–carbon blanks. Analysis of the microstructure of the resultant materials revealed that when a metal element interacts with molten silicon, it leads to the formation of a layer of metal silicide on the metal’s surface. Furthermore, three-point bending tests exhibited an enhancement in the bending strength of the layered composite in comparison to the base silicon carbide ceramics. Additionally, the samples demonstrated a quasi-plastic nature during the process of destruction.

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Novel layered architecture based on Al2O3/ZrO2/BaTiO3 for SMART piezoceramic electromechanical converters

Cited by 12 publications

References 32 publications

Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses

Modeling of electromechanical response and fracture resistance of multilayer piezoelectric energy harvester with residual stresses

Thin high-strength zirconia tapes with extreme flexibility

Fabrication of Layered SiC/C/Si/MeSi2/Me Ceramic–Metal Composites via Liquid Silicon Infiltration of Metal–Carbon Matrices

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