Computer modeling of systematic processing defects on the thermal and elastic properties of open Kelvin-cell metamaterials
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923184" target="_blank" >RIV/60461373:22310/21:43923184 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1016/j.jeurceramsoc.2021.07.031" target="_blank" >https://doi.org/10.1016/j.jeurceramsoc.2021.07.031</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2021.07.031" target="_blank" >10.1016/j.jeurceramsoc.2021.07.031</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Computer modeling of systematic processing defects on the thermal and elastic properties of open Kelvin-cell metamaterials
Popis výsledku v původním jazyce
Open-cell metamaterials prepared by additive manufacturing or replica techniques are typically prone to processing defects resulting from limited resolution, strut cross-section variations or internal strut porosity. These defects are expected to cause deviations from the ideal (CAD-based or template-based) target microstructures and thus from the envisaged properties. This paper investigates some of these effects in a quantitative manner. Based on computer-generated open Kelvin-cell (tetrakaidecahedral) alumina-based metamaterials, the effective thermal conductivity and elastic constants, mainly Young's modulus, are calculated in dependence of the voxel size, strut thinning and strut wall thickness. It is shown that the porosity dependence of smooth, straight and full struts agrees closely to the Gibson-Ashby prediction for open-cell foams, while limited resolution and strut thinning leads to property values that tend to be lower and hollow struts lead to higher property values. The Pabst-Gregorova cross-property relation gives an excellent prediction of the conductivity-modulus correlation in all cases.
Název v anglickém jazyce
Computer modeling of systematic processing defects on the thermal and elastic properties of open Kelvin-cell metamaterials
Popis výsledku anglicky
Open-cell metamaterials prepared by additive manufacturing or replica techniques are typically prone to processing defects resulting from limited resolution, strut cross-section variations or internal strut porosity. These defects are expected to cause deviations from the ideal (CAD-based or template-based) target microstructures and thus from the envisaged properties. This paper investigates some of these effects in a quantitative manner. Based on computer-generated open Kelvin-cell (tetrakaidecahedral) alumina-based metamaterials, the effective thermal conductivity and elastic constants, mainly Young's modulus, are calculated in dependence of the voxel size, strut thinning and strut wall thickness. It is shown that the porosity dependence of smooth, straight and full struts agrees closely to the Gibson-Ashby prediction for open-cell foams, while limited resolution and strut thinning leads to property values that tend to be lower and hollow struts lead to higher property values. The Pabst-Gregorova cross-property relation gives an excellent prediction of the conductivity-modulus correlation in all cases.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20504 - Ceramics
Návaznosti výsledku
Projekt
<a href="/cs/project/GA18-17899S" target="_blank" >GA18-17899S: Částečně a plně slinutá keramika - příprava, mikrostruktura, vlastnosti, modelování a teorie slinování</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of the European Ceramic Society
ISSN
0955-2219
e-ISSN
—
Svazek periodika
41
Číslo periodika v rámci svazku
14
Stát vydavatele periodika
BE - Belgické království
Počet stran výsledku
11
Strana od-do
7130-7140
Kód UT WoS článku
000691269500001
EID výsledku v databázi Scopus
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