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Article Dans Une Revue Key Engineering Materials Année : 2014

Modeling and Measurement of the Effective Young Modulus of Porous Biomedical Materials Manufactured via SLM

Résumé

Selective Laser Melting (SLM) has become a widely used process for manufacturing metal part prototypes. This process, also known as additive manufacturing or rapid prototyping, allows the production of complex pieces using a layer by layer technology. Each layer is build by a laser irradiation providing a local melting (and resolidification) of a thin powder bed presenting a thickness of a few tens of microns. In the present work, two different materials used in biomedical applications were processed by SLM (namely pure titanium and Co28Cr6Mo alloy). The process parameters were set in order to adjust the materials porosity levels. The influence of the porosity level on the material effective mechanical properties was then quantified by experimental measurements using a two point bending test and by applying numerical modeling. The numerical model is based on the use of cross-sectional SEM micrographs of the material. These micrographs were used as meshes (each pixel is a FEM element) and the ANSYS software was then used to perform virtual loadings on the material with the objective to provide its effective mechanical properties. A comparison of the predicted and measured Young modulus was then performed. The provided results confirm that the process parameters may be adjusted in order to control the porosity level of the material and subsequently to adjust its effective mechanical resistance.
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hal-04149947 , version 1 (04-07-2023)

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David Joguet, Yoann Danlos, Rodolphe Bolot, Ghislain Montavon, Christian Coddet. Modeling and Measurement of the Effective Young Modulus of Porous Biomedical Materials Manufactured via SLM. Key Engineering Materials, 2014, 606, pp.125-128. ⟨10.4028/www.scientific.net/KEM.606.125⟩. ⟨hal-04149947⟩
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