Anisotropic Elasticity of Ceramic Micro-Scaffolds Fabricated by Robocasting

Autor:	Michal Landa, Manuel Belmonte, Martin Koller, Pilar Miranzo, P. Sedlák, Benito Román-Manso, Hanuš Seiner, Alena Kruisová
Přispěvatelé:	Czech Science Foundation, Ministerio de Economía y Competitividad (España)
Rok vydání:	2018
Předmět:	Condensed Matter::Materials Science Materials science visual_art 0103 physical sciences visual_art.visual_art_medium General Physics and Astronomy Ceramic Composite material 010301 acoustics 01 natural sciences Anisotropic elasticity 010305 fluids & plasmas
Zdroj:	Digital.CSIC. Repositorio Institucional del CSIC instname
ISSN:	0587-4246 1898-794X
DOI:	10.12693/aphyspola.134.799
Popis:	[EN] Anisotropic elastic and acoustic properties of robocast ceramic scaffolds are calculated by finite element method, utilizing real geometries and material parameters obtained from robocast silicon carbide samples. Six types of robocast geometries are studied, showing different material symmetries given by the arrangement of the ceramic rods in the scaffold structures. Due to the macroscopic periodicity of the structures composed of fully sintered ceramic rods, the robocast scaffolds exhibit metamaterial-like elastic and acoustic properties, never observed for natural materials. The effect of the micro-architecture is shown to be crucial: while for tetragonal and orthorhombic structures, strong acoustic focusing along the directions of the rods appears even in the low-frequency limit, hexagonal structures exhibit no energy focusing up to some frequency limit given by the geometry. This work was supported by the Czech Science Foundation (Grant No. GA17-01618S), and by Spanish project MAT2015-67437-R (MINECO, FEDER, UE).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c65e8f6df4972d44773e508ba7a07af7 https://doi.org/10.12693/aphyspola.134.799 Zobrazit plný text záznamu Plný text ve formátu PDF