EXPERIMENTAL AND COMPUTATIONAL INVESTIGATION OF ELASTIC CHARACTERISTICS OF POROUS MATERIALS.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F01%3APU20348" target="_blank" >RIV/00216305:26210/01:PU20348 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388998:_____/01:51010153

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

čeština

Název v původním jazyce

EXPERIMENTAL AND COMPUTATIONAL INVESTIGATION OF ELASTIC CHARACTERISTICS OF POROUS MATERIALS.

Popis výsledku v původním jazyce

Some of technical materials, e.g. various types of ceramics, show a certain degree of porosity. Ceramic material ?Eucor? produced by fusion of natural basalt is one of them. A poro-sity with pore size on the order of milimeters is typical for this material. The paper deals with problems of evaluating elastic constants at this type of material ? namely elastic modulus and Poisson?s ratio. The experiments showed that evaluating the elasticity modulus from strains measured by electric resistance strain gauges is not credible because the measured strain values are influenced by strain concentrations in the pore vicinity. The elasticity modulus was evaluated from the deflection of a sample loaded by four-point-flexion. The strain concentration in the pore vicinity was modelled by computational modelling and the influence of porosity value on its global elasticity modulus was simulated. Ceramics was treated as a particle composite with particles having zero elasticity modulus.

Název v anglickém jazyce

EXPERIMENTAL AND COMPUTATIONAL INVESTIGATION OF ELASTIC CHARACTERISTICS OF POROUS MATERIALS.

Popis výsledku anglicky

Some of technical materials, e.g. various types of ceramics, show a certain degree of porosity. Ceramic material ?Eucor? produced by fusion of natural basalt is one of them. A poro-sity with pore size on the order of milimeters is typical for this material. The paper deals with problems of evaluating elastic constants at this type of material ? namely elastic modulus and Poisson?s ratio. The experiments showed that evaluating the elasticity modulus from strains measured by electric resistance strain gauges is not credible because the measured strain values are influenced by strain concentrations in the pore vicinity. The elasticity modulus was evaluated from the deflection of a sample loaded by four-point-flexion. The strain concentration in the pore vicinity was modelled by computational modelling and the influence of porosity value on its global elasticity modulus was simulated. Ceramics was treated as a particle composite with particles having zero elasticity modulus.

Druh

D - Stať ve sborníku

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název statě ve sborníku

Experimentální Analýza Napětí 2001

ISBN

80-86246-09-4

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

125-132

Název nakladatele

Ústav teoretické a aplikované mechaniky AV ČR

Místo vydání

Praha

Místo konání akce

Tábor

Datum konání akce

4. 6. 2001

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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