Comparison between the mechanical behaviour of the human healthy AA and commercial prostheses under various mechanical loadings

Lemercier, Audrey; Bailly, Lucie; Geindreau, Christian; Toungara, Mamadou; Latil, P.; Orgéas, Laurent; Deplano, Valérie; Boucard, Nadège

doi:10.1080/10255842.2013.815930

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“…Knitted, braided or woven fabrics are characterised by a fine regular arrangement of the fibres, therefore allowing a better control of the macroscopic anisotropic properties (Xu et al, 2010;Schreiber et al, 2010;Yang et al, 2012). However, due to their inappropriate fibrous microstructures, the current commercial textile prostheses do not exhibit suitable deformability (Surovtsova, 2005;Sarkar et al, 2006;Demanget et al, 2012Demanget et al, , 2013Lemercier et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

In-plane mechanics of soft architectured fibre-reinforced silicone rubber membranes

Bailly

Toungara

Orgéas

et al. 2014

Journal of the Mechanical Behavior of Biomedical Materials

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Silicone rubber membranes reinforced with architectured fibre networks were processed with a dedicated apparatus, allowing a control of the fibre content and orientation. The membranes were subjected to tensile loadings combined with continuous and discrete kinematical field measurements (DIC and particle tracking). These tests show that the mechanical behaviour of the membranes is hyperelastic at the first order. They highlight the influence of the fibre content and orientation on both the membrane in-plane deformation and stress levels. They also prove that for the considered fibrous architectures and mechanical loadings, the motion and deformation of fibres is an affine function of the macroscale transformation. These trends are fairly well described by the micromechanical model proposed recently in Bailly et al. (JMBBM, 2012). This result proves that these materials are very good candidates for new biomimetic membranes, e.g. to improve aortic analogues used for in vitro experiments, or existing textiles used for vascular (endo)prostheses.

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