title: Experimental multiscale measurements for the mechanical identification of a cortical bone by digital image correlation.
abstract: The implementation of the experimental methodology by optical measurements of mechanical fields, the development of a test bench, the specimen preparation, the experimental measurements, and the digital image correlation (DIC) method, have already been the object of research in the context of biological materials. Nevertheless, in the framework of the experimental identification of a mesoscopic stochastic model of the random apparent elasticity field, measurements of one specimen is required at both the macroscopic scale and the mesoscopic scale under one single loading. The nature of the cortical bone induces some difficulties, as no single speckled pattern technique is available for simultaneously obtaining the displacement at the macroscopic scale and at the mesoscopic scale. In this paper, we present a multiscale experimental methodology based on (i) an experimental protocol for one specimen of a cortical bone, (ii) its measuring bench, (iii) optical field measurements by DIC method, (iv) the experimental results, and (v) the multiscale experimental identification by solving a statistical inverse problem.
authors.affiliation: Université Paris-Est, Laboratoire Modélisation et Simulation Multi-Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-La-Vallée, Cedex 2, France.
authors.forename: Manh-Tu
authors.initials: MT
authors.lastname: Nguyen
authors.affiliation: Ecole Polytechnique, Laboratoire de Mécanique des Solides, 91128, Palaiseau cedex, France.
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Allain
authors.affiliation: Ecole Polytechnique, Laboratoire de Mécanique des Solides, 91128, Palaiseau cedex, France.
authors.forename: Hakim
authors.initials: H
authors.lastname: Gharbi
authors.affiliation: Université Paris-Est, Laboratoire Modélisation et Simulation Multi-Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-La-Vallée, Cedex 2, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Desceliers
authors.affiliation: Université Paris-Est, Laboratoire Modélisation et Simulation Multi-Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-La-Vallée, Cedex 2, France. Electronic address: christian.soize@univ-paris-est.fr.
authors.forename: Christian
authors.initials: C
authors.lastname: Soize
mesh_terms: D000818:Animals; D002417:Cattle; D000071538:Cortical Bone / Q000000981:diagnostic imaging*; D004548:Elasticity; D007091:Image Processing, Computer-Assisted
keywords: DIC method; Digital image correlation method; Heterogeneous microstructure; Multiscale identification; Multiscale measurements