alexa Young’s Modulus of Macroporous Bioceramics: Measurement and Numerical Simulation | OMICS International | Abstract
ISSN:2090-5025

Bioceramics Development and Applications
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Research Article

Young’s Modulus of Macroporous Bioceramics: Measurement and Numerical Simulation

Franc¸ois Pecqueux1,2 Franck Tancret1 and Jean-Michel Bouler2

1Laboratoire de G´enie des Mat´eriaux et Proc´ed´es Associ´es, Polytech-Nantes, Universit´e de Nantes, BP 50609, 44306 Nantes Cedex 3, France

2Laboratoire d’Ing´enierie Ost´eo-Articulaire et Dentaire, INSERM UMR791, Universit´e de Nantes, BP 84215, 44042 Nantes Cedex 1, France

*Corresponding Author:
Franc¸ois Pecqueux
E-mail:
[email protected]

Received date: November 11, 2010; Accepted date: December 02, 2010

Keywords

biomaterial; modeling; modelling; apatite; microstructure; FEM; FEA

Abstract

A biphasic calcium phosphate (BCP) powder is synthesized, mixed with various amounts of naphthalene particles, pressed and sintered at different temperatures to obtain ceramics with isolated macropores (from 3% to 52% of the specimen volume) and residual microporosity resulting from an incomplete sintering (from 2% to 45% of the ceramic matrix volume). Young’s modulus is measured on a classical three-point bending setup. A good agreement is found between an existing analytical model and the experimental Young’s modulus measurements, on the overall ranges of macro- and microporosity. The Young’s modulus variation as a function of macroporosity is also calculated by a finite element method, by simulating the mechanical response of a periodic tri-dimensional repetition of elemental cubes containing various dispersions of macropores. The contribution of the shape and dispersion (in size and location) of the macropores on the decrease of Young’s modulus as a function of porosity is simulated. Calculated trends are confirmed by experimental results.

Keywords

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