Development and mechanical characterization of porous titanium bone substitutes
Article dans une revue avec comité de lecture
Date
2012Journal
Journal of the mechanical behavior of biomedical materialsAbstract
Commercially Pure Porous Titanium (CPPTi) can be used for surgical implants to avoid the stress shielding effect due to the mismatch between the mechanical properties of titanium and bone. Most researchers in this area deal with randomly distributed pores or simple architectures in titanium alloys. The control of porosity, pore size and distribution is necessary to obtain implants with mechanical properties close to those of bone and to ensure their osseointegration. The aim of the present work was therefore to develop and characterize such a specific porous structure. First of all, the properties of titanium made by Selective Laser Melting (SLM) were characterized through experimental testing on bulk specimens. An elementary pattern of the porous structure was then designed to mimic the orthotropic properties of the human bone following several mechanical and geometrical criteria. Finite Element Analysis (FEA) was used to optimize the pattern. A porosity of 53% and pore sizes in the range of 860 to 1500 μm were finally adopted. Tensile tests on porous samples were then carried out to validate the properties obtained numerically and identif the failure modes of the samples. Finally, FE elastoplastic analyses were performed on the porous samples in order to propose a failure criterion for the design of porous substitutes.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureHealthcare simulators are learning environments that offer many training opportunities. The integration of expressive virtual patients in these simulators encourages the exchanges and provokes emotional reactions in the ...
-
Communication sans acteHealthcare simulators are considered as interactive and playful learning environments offering many training opportunities. Medical students wish to train with virtual simulators for a few years to prepare their encounter ...
-
Expressive Virtual Human : Impact of expressive wrinkles and pupillary size on emotion recognition Communication avec acteImproving the expressiveness of virtual humans is essential for qualitative interactions and development of an emotional bond. It is certainly indicated for all applications using the user’s cognitive processes, such as ...
-
Article dans une revue avec comité de lectureALCARAZ, Jean-Pierre; LE COQ, Laurence; POURCHEZ, Jérémie; THOMAS, Dominique; CHAZELET, Sandrine; BOUDRY, Isabelle; BARBADO, Maud; SILVENT, Sophie; DESSALE, Claire; ANTOINE, Fabienne; GUIMIER-PINGAULT, Catherine; CORTELLA, Laurent; ROUIF, Sophie; BARDIN-MONNIER, Nathalie; CHARVET, Augustin; DUFAUD, Olivier; LECLERC, Lara; MONTIGAUD, Yoann; LAURENT, Coralie; VERHOEVEN, Paul; JOUBERT, Aurélie; BOUHANGUEL, Ala; ANDRES, Yves; GAFFÉ, Joël; MARTIN, Donald K.; HUET, Christophe; BOISSET, Sandrine; MAURIN, Max; RUMEAU, Pascal; CHARLOT, Frédéric; MOREAU-GAUDRY, Alexandre; BONNETERRE, Vincent; CINQUIN, Philippe; LANDELLE, Caroline; RICHAUD, Emmanuel (Elsevier, 2021)The need for personal protective equipment increased exponentially in response to the Covid-19 pandemic. To cope with the mask shortage during springtime 2020, a French consortium was created to find ways to reuse medical ...
-
Communication avec acteQUINTERO REYES, Christian; DURIOT, Robin; LE ROY, Corentin; AUBAGNAC, Christophe; ROTH, Jérémy; RENAUDIN, Fabien; SAUVAT, Nicolas; MILLIEN, Anne; DUBOIS, Frédéric; DENAUD, Louis; POT, Guillaume; GIRARDON, Stéphane (2019)Dans ce papier sont présentés les premiers résultats d’une étude globale visant à consolider, puis proposer des règles de dimensionnement de ponts mixtes bois / béton collés. La liaison collée est explorée de manière ...