Search Results - "Lematre, M"

Modeling and numerical study of the influence of imperfect interface properties on the reflection coefficient for isotropic multilayered structures by Loukkal, A., Lematre, M., Bavencoffe, M., Lethiecq, M.

“…•Numerical study of interface properties on resonance modes in an isotropic multilayer.•Imperfect interface models assessing adherence quality.•Identification…”
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Modeling and numerical study of the influence of imperfect interface properties on the reflectance function for anisotropic multilayered structures by Loukkal, A., Lematre, M., Bavencoffe, M., Lethiecq, M.

“…The demand for the development of non-destructive techniques aiming to assess the reliability of adhesively bonded structures has greatly increased these…”
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Exact second order formalism for the study of electro-acoustic properties in piezoelectric structures under an initial mechanical stress by Lematre, M., Domenjoud, M., Tran-Huu-Hue, L.P.

“…► Actual plane wave velocities differ from about 4% with the natural ones. ► Crosses appear between curves of actual quasi-shear velocity with the pre-stress…”
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Modelling nonlinearity in piezoceramic transducers: From equations to nonlinear equivalent circuits by Parenthoine, D., Tran-Huu-Hue, L.-P., Haumesser, L., Vander Meulen, F., Lematre, M., Lethiecq, M.

“…Quadratic nonlinear equations of a piezoelectric element under the assumptions of 1D vibration and weak nonlinearity are derived by the perturbation theory. It…”
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Modeling and numerical study of the electroacoustic behavior in integrated piezoelectric structures under external mechanical stress by Lematre, M., Tran-Huu-Hue, L.-P., Feuillard, G.

“…The purpose of this study is to model and understand the role of an applied mechanical stress in piezoelectric materials as far as electroacoustic parameters…”
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Modeling of ultrasonic wave propagation in integrated piezoelectric structures under residual stress by Lematre, M., Feuillard, G., Delaunay, T., Lethiecq, M.

“…The objective of this study is to understand the role of residual stress in piezoelectric layers in order to predict the performance of integrated structures…”
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Determination of elastic parameters in isotropic plates by using acoustic microscopy measurements and an optimization method by Lematre, M., Benmehrez, Y., Bourse, G., Xu, J.W., Ourak, M.

“…The determination of elastic constants in isotropic solids by line focus acoustic (LFA) microscopy is discussed. A velocity corresponding to a global resonance…”
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Acoustic microscopy measurement of elastic constants by using an optimization method on measured and calculated SAW velocities: effect of initial cij values on the calculation convergence and influence of the LFI transducer parameters on the determination of the SAW velocity by Lematre, M, Benmehrez, Y, Bourse, G, Xu, J.W, Ourak, M

“…The determination of elastic constants in anisotropic solids by line-focus acoustic microscopy (LFAM) is discussed. The velocity of leaky surface acoustic…”
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A non-invasive method of tendon force measurement by Pourcelot, Philippe, Defontaine, Marielle, Ravary, Bérangère, Lemâtre, Mickaël, Crevier-Denoix, Nathalie

“…The ability to measure the forces exerted in vivo on tendons and, consequently, the forces produced by muscles on tendons, offers a unique opportunity to…”
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Modeling of ultrasonic wave propagation in integrated piezoelectric structures under residual stress by LEMATRE, Mickaël, FEUILLARD, Guy, DELAUNAY, Thomas, LETHIECQ, Marc

“…The objective of this study is to understand the role of residual stress in piezoelectric layers in order to predict the performance of integrated structures…”
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Modelling of ultrasonic wave propagation in integrated piezoelectric structures under residual stress by Lematre, M., Feuillard, G., Delaunay, T., Lethiecq, M.

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Single domain and multidomain piezoelastic relationships in piezoelectric single crystals by Delaunay, T., Le Clezio, E., Lematre, M., Feuillard, G.

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Relations between single-domain and multidomain piezoelastic properties in single crystals by Delaunay, Thomas, Le Clezio, Emmanuel, Lematre, Mickael, Feuillard, Guy

“…This paper presents a new method to compute the piezoelastic properties of multidomain single crystals from the single-domain constants. Based on a quasi…”
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Modeling and numerical study of the electroacoustic behavior of lithium niobate under an initial electrical stress by Domenjoud, Mathieu, Lematre, Michael, Fortineau, Jerome, Feuillard, Guy, Tran-Huu-Hue, Louis-Pascal

“…Recently, we developed a second order formalism of piezoelectric structures under an external stress. In this work, this formalism is used to numerically study…”
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A new technique for the simple realization of a focusing transducer based on the Soret's plane model by Ghazi, A.E., Duclos, J., Lematre, M.

“…We present a simple technique for the realization of a piezoplastic plane focusing immersion transducer, based on the Soret's plane model. The experiments…”
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Acoustic microscopy measurement of elastic constants by using an optimization method on measured and calculated SAW velocities: effect of initial c sub ij values on the calculation convergence and influence of the LFI transducer parameters on the determination of the SAW velocity by Lematre, M, Benmehrez, Y, Bourse, G, Xu, J W, Ourak, M

“…The determination of elastic constants in anisotropic solids by line-focus acoustic microscopy (LFAM) is discussed. The velocity of leaky surface acoustic…”
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Acoustic microscopy measurement of elastic constants by using an optimization method on measured and calculated SAW velocities: effect of initial c\+v\ij\-v\ values on the calculation convergence and influence of the LFI transducer parameters on the determination of the SAW velocity by Lematre, M, Benmehrez, Y, Bourse, G, Xu, J W, Ourak, M

“…The determination of elastic constants in anisotropic solids by line-focus acoustic microscopy (LFAM) is discussed. The velocity of leaky surface acoustic…”
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Integrated piezoelectric structures under external mechanical stress: Theory and experiments by Domenjoud, Mathieu, Lematre, Mickael, Hue, Pascal Tran Huu, Feuillard, Guy

“…The purpose of the study is to understand and predict the behavior of integrated structures when submitted to external or internal mechanical stress. This is…”
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Modelling and numerical study of the electro-acoustic behaviour in integrated piezoelectric structures under external mechanical stress by Lematre, M., Tran, P., Feuillard, G.

“…We propose in this paper a modified KLM electroacoustic model of transducer that enables to take into account the effect of a mechanical pre-stress. Then, a…”
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