title: Geometrical and material parameters to assess the macroscopic mechanical behaviour of fresh cranial bone samples.
abstract: The present study aims at providing quantitative data for the personalisation of geometrical and mechanical characteristics of the adult cranial bone to be applied to head FE models. A set of 351 cranial bone samples, harvested from 21 human skulls, were submitted to three-point bending tests at 10 mm/min. For each of them, an apparent elastic modulus was calculated using the beam's theory and a density-dependant beam inertia. Thicknesses, apparent densities and percentage of ash weight were also measured. Distributions of characteristics among the different skull bones show their symmetry and their significant differences between skull areas. A data analysis was performed to analyse potential relationship between thicknesses, densities and the apparent elastic modulus. A specific regression was pointed out to estimate apparent elastic modulus from the product of thickness by apparent density. These results offer quantitative tools in view of personalising head FE models and thus improve definition of local injury criteria for this body part.
authors: Université de Lyon, F-69622, Lyon, IFSTTAR, LBMC, UMR_T9406, Université Lyon 1, , France; Aix-Marseille Univ, LBA, F-13015 Marseille, IFSTTAR, LBA, F-13015 Marseille, France; University of Valenciennes (UVHC), LAMIH UMR CNRS 8201, 59313 Valenciennes, France.
authors: Audrey
authors: A
authors: Auperrin
authors: University of Valenciennes (UVHC), LAMIH UMR CNRS 8201, 59313 Valenciennes, France.
authors: Rémi
authors: R
authors: Delille
authors: University of Valenciennes (UVHC), LAMIH UMR CNRS 8201, 59313 Valenciennes, France.
authors: Denis
authors: D
authors: Lesueur
authors: Université de Lyon, F-69622, Lyon, IFSTTAR, LBMC, UMR_T9406, Université Lyon 1, , France. Electronic address: karine.bruyere@ifsttar.fr.
authors: Karine
authors: K
authors: Bruyère
authors: Aix-Marseille Univ, LBA, F-13015 Marseille, IFSTTAR, LBA, F-13015 Marseille, France.
authors: Catherine
authors: C
authors: Masson
authors: University of Valenciennes (UVHC), LAMIH UMR CNRS 8201, 59313 Valenciennes, France.
authors: Pascal
authors: P
authors: Drazétic
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015519:Bone Density; D055119:Elastic Modulus; D006801:Humans; D008297:Male; D008422:Materials Testing; D008875:Middle Aged; D012016:Reference Values; D012886:Skull / Q000033:anatomy & histology*
keywords: Cranial bone; Density; Geometry; Three-point bending tests