Young's modulus of porous ceramics and possibilities of its estimation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F10%3A00022968" target="_blank" >RIV/60461373:22310/10:00022968 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

YOUNGŮV MODUL PORÉZNÍ KERAMIKY A MOŽNOSTI JEHO ODHADU

Original language description

This contribution summarizes available relations for the parameter-free prediction (estimation) of tensile moduli (Young?s moduli) of porous ceramics, including the exponential relation and the recently proposed sigmoidal average, and compares the predictions with values measured for alumina, zirconia, alumina-zirconia composites and other ceramics (silicon carbide and nitride). The emphasis is on relations that can be used to circumvent direct measurement of the Young?s modulus. It is shown that for porous ceramics prepared with pore-froming agents the porosity dependence of the Young?s modulus can be predicted with surprisingly high reliability and accuracy using the exponential relation and the sigmoidal average. The prediction is correct to withina few percent. Even higher precision of the prediction can be achieved (without measuring the Young?s modulus directly), when the porosity dependence of another property, e.,g. thermal conductivity, is measured. In this case, using the pr

Czech name

YOUNGŮV MODUL PORÉZNÍ KERAMIKY A MOŽNOSTI JEHO ODHADU

Czech description

This contribution summarizes available relations for the parameter-free prediction (estimation) of tensile moduli (Young?s moduli) of porous ceramics, including the exponential relation and the recently proposed sigmoidal average, and compares the predictions with values measured for alumina, zirconia, alumina-zirconia composites and other ceramics (silicon carbide and nitride). The emphasis is on relations that can be used to circumvent direct measurement of the Young?s modulus. It is shown that for porous ceramics prepared with pore-froming agents the porosity dependence of the Young?s modulus can be predicted with surprisingly high reliability and accuracy using the exponential relation and the sigmoidal average. The prediction is correct to withina few percent. Even higher precision of the prediction can be achieved (without measuring the Young?s modulus directly), when the porosity dependence of another property, e.,g. thermal conductivity, is measured. In this case, using the pr

Type

D - Article in proceedings

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Sborník semináře Křehký lom 2010

ISBN

978-80-87434-01-7

ISSN

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e-ISSN

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Number of pages

10

Pages from-to

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Publisher name

Ústav fyziky materiálů AV ČR

Place of publication

Brno

Event location

Brno

Event date

Jan 1, 2010

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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