Experimental identification in the ultrasonic range of a mechanical model for cortical bones
Résumé
This paper deals with the construction of a simplified elastoacoustic model which allows the ultrasonic wave propagation to be simulated in a complex biomechanical system. This simplified model consists in a fluid-solid multilayer System. In this simplified model, the main source of uncertainties is due to the constitutive equation for the solid layer which is chosen as a homogeneous transverse isotropic elastic medium. In order to improve this simplified model, a probabilistic model of the effective elasticity tensor of the solid medium is developped. A method is presented for the experimental identification in a statistical sense of the model parameters using the ultrasonic transmission technique. A complete application is presented for the human cortical bone for which an experimental database is available.
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conference-2008-ISMA-Leuven-15-17-sep-2008-desceliers-soize-grimal-talmant-naili-preprint.pdf (293.39 Ko)
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