Relative Young's modulus and thermal conductivity of isotropic porous ceramics with randomly oriented spheroidal pores - Model-based relations, cross-property predictions and numerical calculations
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916703" target="_blank" >RIV/60461373:22310/18:43916703 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0955221918302607" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0955221918302607</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2018.04.051" target="_blank" >10.1016/j.jeurceramsoc.2018.04.051</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Relative Young's modulus and thermal conductivity of isotropic porous ceramics with randomly oriented spheroidal pores - Model-based relations, cross-property predictions and numerical calculations
Popis výsledku v původním jazyce
Based on computer-generated digital microstructures with spherical or spheroidal pores (isolated or overlapping) of aspect ratio 1 (spherical), 10 (prolate) and 0.1 (oblate), the relative thermal conductivity and Young's modulus is numerically calculated and compared to predictions based on generalized effective medium approximations (EMAs) and a recently proposed generalized cross-property relation (CPR). It is shown that, when the aspect ratio is known, generalized power-law and exponential relations provide satisfactory predictions of these two properties without the use of empirical fit parameters. The maximum deviation of these two types of EMA predictions from the true values ranges from -0.04 to + 0.06 relative property units (RPU) for the power law relation and from -0.02 to -0.10 RPU for the exponential relation. However, the generalized CPR results in an even higher accuracy of the predictions, with maximum deviations smaller than 0.01 RPU for the Young's modulus when the thermal conductivity is known.
Název v anglickém jazyce
Relative Young's modulus and thermal conductivity of isotropic porous ceramics with randomly oriented spheroidal pores - Model-based relations, cross-property predictions and numerical calculations
Popis výsledku anglicky
Based on computer-generated digital microstructures with spherical or spheroidal pores (isolated or overlapping) of aspect ratio 1 (spherical), 10 (prolate) and 0.1 (oblate), the relative thermal conductivity and Young's modulus is numerically calculated and compared to predictions based on generalized effective medium approximations (EMAs) and a recently proposed generalized cross-property relation (CPR). It is shown that, when the aspect ratio is known, generalized power-law and exponential relations provide satisfactory predictions of these two properties without the use of empirical fit parameters. The maximum deviation of these two types of EMA predictions from the true values ranges from -0.04 to + 0.06 relative property units (RPU) for the power law relation and from -0.02 to -0.10 RPU for the exponential relation. However, the generalized CPR results in an even higher accuracy of the predictions, with maximum deviations smaller than 0.01 RPU for the Young's modulus when the thermal conductivity is known.
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/GA15-18513S" target="_blank" >GA15-18513S: Příprava a charakterizace oxidové a silikátové keramiky s řízenou mikrostrukturou a modelování souvislostí mezi mikrostrukturou a vlastnostmi</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2018
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
38
Číslo periodika v rámci svazku
11
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
9
Strana od-do
4026-4034
Kód UT WoS článku
000435428700036
EID výsledku v databázi Scopus
2-s2.0-85046171023