Modeling of the Electromechanical Behavior of Barium Titanate Under Mechanical Stress and Comparison With Experimental Measurements

Autor: Michael Lematre, L.P. Tran-Huu-Hue, Remy Ul, Michel Gratton, Marc Lethiecq

Publikováno v: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2020, 67 (8), pp.1715-1724. ⟨10.1109/tuffc.2020.2979395⟩

Barium titanate (BaTiO3) is increasingly studied to replace lead-based piezoelectric materials, such as those which belong to the lead zirconate titanate (PZT) family, due to lead toxicity. In many applications, such as Tonpilz transducers, piezoelec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bafe81c321fcd8def5cbe63006e9a923
https://doi.org/10.1109/tuffc.2020.2979395

Segmented line-focused V(z) transducer for enhancement of guided mode detection and measurement: A theoretical and numerical study

Autor: Marc Lethiecq, Michael Lematre

Publikováno v: Journal of Applied Physics
Journal of Applied Physics, American Institute of Physics, 2021, 129 (2), pp.024504. ⟨10.1063/5.0033477⟩

This paper presents a method based on a modified V(z) transducer to enhance the detection of some guided modes and the measure of their phase velocity. Instead of using a curved continuous piezoelectric surface, a modified V(z) transducer is modeled

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7067e112a9592bf74e25729339a2c9fc
https://hal.archives-ouvertes.fr/hal-03213411

Modeling and numerical study of the influence of imperfect interface properties on the reflection coefficient for isotropic multilayered structures

Autor: Marc Lethiecq, A. Loukkal, Michael Lematre, Maxime Bavencoffe

Publikováno v: Ultrasonics
Ultrasonics, Elsevier, 2020, 103, pp.106099. ⟨10.1016/j.ultras.2020.106099⟩

International audience; The microelectronics industry is expressing an increased demand for the development of non-destructive tools and methods for health control and diagnostics in multilayered structures. The purpose of these tools is to detect pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5ea955e20d335a340d117d333ccb04f
https://hal.archives-ouvertes.fr/hal-03018520

Numerical study of the adherence conditions at interfaces in multilayered structures

Autor: Maxime Bavencoffe, Marc Lethiecq, Michael Lematre, Abderrahmane Loukkal

Publikováno v: Proceedings of Meetings on Acoustics.

The microelectronics industry is expressing an increased demand for the development of non-destructive tools and methods for health control and diagnostics in multilayered structures, including problems such as delaminations, porosity and voids. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::699037ecf2a99aaad4ef744c786485a0
https://doi.org/10.1121/2.0001220

Modeling and numerical study of the electroacoustic behavior of lithium niobate under an initial electrical stress

Autor: Guy Feuillard, L.P. Tran-Huu-Hue, Mathieu Domenjoud, Jérôme Fortineau, Michael Lematre

Publikováno v: IEEE International Symposium on the Applications of Ferroelectrics – Piezoresponse Force Microscopy
IEEE International Symposium on the Applications of Ferroelectrics – Piezoresponse Force Microscopy, Jul 2013, Prague, Czech Republic. pp.30-33, ⟨10.1109/ISAF.2013.6748712⟩

Recently, we developed a second order formalism of piezoelectric structures under an external stress. In this work, this formalism is used to numerically study the nonlinearities and evolutions of electroacoustic behavior of lithium niobate under ini

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b74e63ce6240b22e56fdcf2142b5786
https://hal.archives-ouvertes.fr/hal-01235721