About: TWO-SCALE MODEL FOR PREDICTION OF MACROSCOPIC ELASTIC PROPERTIES OF ALUMINIUM FOAM USING NANOINDENTATION

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This paper is focused on the prediction of macroscopic elastic properties of highly porous aluminium foam. The material is characterized by a closed pore system with very thin pore walls and large air pores. Intrinsic material properties of cell wall constituents are assessed with nanoindentation whereas analytical homogenizations are employed for the assessment of the cell wall elastic properties. Very good agreement was found between the various analytical estimates. Two-dimensional microstructural FEM model was applied to obtain effective elastic properties of the upper material level for which the Young's modulus ranges from 1.11 GPa to 1.4 GPa depending on the size of the evaluated area. The estimated range of values was lower in comparison with experimental results obtained from experimental compression tests. It follows from the 2-D approximation that the 2-D model underestimates the stiffness, compared to the real case constrained in 3-D. Therefore, more appropriate 3-D model based on microCT data will be prepared in the future work. This paper is focused on the prediction of macroscopic elastic properties of highly porous aluminium foam. The material is characterized by a closed pore system with very thin pore walls and large air pores. Intrinsic material properties of cell wall constituents are assessed with nanoindentation whereas analytical homogenizations are employed for the assessment of the cell wall elastic properties. Very good agreement was found between the various analytical estimates. Two-dimensional microstructural FEM model was applied to obtain effective elastic properties of the upper material level for which the Young's modulus ranges from 1.11 GPa to 1.4 GPa depending on the size of the evaluated area. The estimated range of values was lower in comparison with experimental results obtained from experimental compression tests. It follows from the 2-D approximation that the 2-D model underestimates the stiffness, compared to the real case constrained in 3-D. Therefore, more appropriate 3-D model based on microCT data will be prepared in the future work. (en)
Title	TWO-SCALE MODEL FOR PREDICTION OF MACROSCOPIC ELASTIC PROPERTIES OF ALUMINIUM FOAM USING NANOINDENTATION TWO-SCALE MODEL FOR PREDICTION OF MACROSCOPIC ELASTIC PROPERTIES OF ALUMINIUM FOAM USING NANOINDENTATION (en)
skos:prefLabel	TWO-SCALE MODEL FOR PREDICTION OF MACROSCOPIC ELASTIC PROPERTIES OF ALUMINIUM FOAM USING NANOINDENTATION TWO-SCALE MODEL FOR PREDICTION OF MACROSCOPIC ELASTIC PROPERTIES OF ALUMINIUM FOAM USING NANOINDENTATION (en)
skos:notation	RIV/68407700:21110/12:00197693!RIV13-GA0-21110___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GAP105/12/0824), S
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Němeček, Jiří Králík, Vlastimil
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta stavební
http://linked.open...dnocenehoVysledku	175512
http://linked.open...ai/riv/idVysledku	RIV/68407700:21110/12:00197693
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Metal foam; porous system; nanoindentation; micromechanical properties; homogenization (en)
http://linked.open.../riv/klicoveSlovo	Metal foam porous system micromechanical properties homogenization nanoindentation
http://linked.open...ontrolniKodProRIV	[3088968CB259]
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Determination of Structural and Mechanical Properties of Metal Foams Using Nanoindentation, Computer tomography and Microstructural FEM models
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Králík, Vlastimil Němeček, Jiří
http://localhost/t...ganizacniJednotka	21110

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