Small-scale domain switching near sharp piezoelectric bi-material notches
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Date
2025-03-08
Authors
Hrstka, Miroslav
Kotoul, Michal
Profant, Tomáš
Kianicová, Marta
0000-0002-3169-3159Advisor
Referee
Mark
Journal Title
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Volume Title
Publisher
Springer Nature
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Abstract
Assuming a scenario of small-scale domain switching, the dimensions and configuration of the domain switching region preceding a clearly defined primarily monoclinic piezoelectric bi-material notch are determined by embracing the energetic switching principle and micromechanical domain switching framework proposed by Hwang et al. (Acta Metall Mater 43(5):2073-2084, 1995. https://doi.org/10.1016/0956-7151(94)00379-V) for a given set of materials, structure, and polarization alignment. The piezoelectric bi-material under consideration comprises piezoelectric ceramics PZT-5H and BaTiO3. The analysis of the asymptotic in-plane field around a bi-material sharp notch is conducted utilizing the extended Lekhnitskii-Eshelby-Stroh formalism (Ting in Anisotropic elasticity, Oxford University Press. 1996. https://doi.org/10.1093/oso/9780195074475.001.0001). Subsequently, the boundary value problem with the prescribed spontaneous strain and polarization within the switching domain is solved and their influence on the in-plane intensity of singularity at the tip of interface crack is computed. The effects of the initial poling direction on the resulting variation of the energy release rates are discussed.
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Citation
INTERNATIONAL JOURNAL OF FRACTURE. 2025, vol. 250, issue 1, p. 1-30.
https://link.springer.com/article/10.1007/s10704-024-00823-1
https://link.springer.com/article/10.1007/s10704-024-00823-1
Document type
Peer-reviewed
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en