Experimental 3D printed re-entrant auxetic and honeycomb spinal cages based on Ti-6Al-4 V: Computer-Aided design concept and mechanical characterization

V.A. Lvov,F.S. Senatov,A.S. Shinkaryov,S.V. Chernyshikhin,A.A. Gromov, V.A. Sheremetyev

Composite Structures（2023）

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摘要

•Spinal interbody cages adapted for an auxetic, and honeycomb using standard CAD software operations and manufactured with SLM.•Auxetic-based cages exhibit higher strength properties than honeycomb-based cages.•The stiffness of the auxetic cages is comparable to stiffness of human cortical bone.•The honeycomb cages exhibit lower value of Young’s modulus closer to that for vertebrae.

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关键词

Auxetic metamaterial,Honeycomb structure,3D printing,Ti-6Al-4V,Mechanical testing,Spinal interbody cage

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