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Communication Dans Un Congrès Année : 2009

Identification of a probabilistic model of the geometrical and mechanical properties for a nonhomegeneous cortical bone using in vivo measurements in ultrasonic range

Résumé

The purpose of this paper is the construction of an uncertain probabilistic model for the mechanical properties of the cortical bone. The main objective is firstly to propose a probabilistic simplified model adapted to the ultrasonic axial transmission technique and secondly to present an experimental identification using this technique. The simplified model is constructed as a fluid-solid semi-infinite multilayered system in which the solid layer (the cortical bone) is a homogeneous anisotropic elastic material and the two others semi-infinite layers are fluids. This model is a rough approximation of the real biomechanical model and it can be improved by taking into account the uncertainties related to the elasticity tensor with a probabilistic model. In this paper, the parameters of the probabilistic model are the mean elasticity tensor and a dispersion coefficient. A complete application is presented for the human cortical bone for which an experimental database is available.
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Dates et versions

hal-00692159 , version 1 (28-04-2012)

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  • HAL Id : hal-00692159 , version 1

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Christophe Desceliers, Christian Soize, Q. Grimal, M. Talmant, Salah Naili. Identification of a probabilistic model of the geometrical and mechanical properties for a nonhomegeneous cortical bone using in vivo measurements in ultrasonic range. 16th International Congress on Sound and Vibration (ICSV16), Jul 2009, Krakow, Poland, Poland. pp.1-7. ⟨hal-00692159⟩
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