Effects of strut geometry and pore fraction on creep properties of cellular materials

Yuttanant Boonyongmaneerat; David C. Dunand

doi:10.1016/j.actamat.2008.11.027

Effects of strut geometry and pore fraction on creep properties of cellular materials

Yuttanant Boonyongmaneerat, David C. Dunand^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

A set of analytical models based on engineering beam analysis is developed to predict creep behavior of cellular materials over a broad range of relative density. Model predictions, which take into account the presence of mass at strut nodes and consider different possible deformation mechanisms and foam architectures, are compared to experimental creep results for a replicated nickel-base foam and a reticulated aluminum foam. As porosity decreases, the controlling creep mechanism in the foams changes from strut bending, to strut shearing, and ultimately to strut compression.

Original language	English (US)
Pages (from-to)	1373-1384
Number of pages	12
Journal	Acta Materialia
Volume	57
Issue number	5
DOIs	https://doi.org/10.1016/j.actamat.2008.11.027
State	Published - Mar 2009

Keywords

Creep
Foams
Metallic foams
Porous materials
Sponges

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2008.11.027

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title = "Effects of strut geometry and pore fraction on creep properties of cellular materials",

abstract = "A set of analytical models based on engineering beam analysis is developed to predict creep behavior of cellular materials over a broad range of relative density. Model predictions, which take into account the presence of mass at strut nodes and consider different possible deformation mechanisms and foam architectures, are compared to experimental creep results for a replicated nickel-base foam and a reticulated aluminum foam. As porosity decreases, the controlling creep mechanism in the foams changes from strut bending, to strut shearing, and ultimately to strut compression.",

keywords = "Creep, Foams, Metallic foams, Porous materials, Sponges",

author = "Yuttanant Boonyongmaneerat and Dunand, {David C.}",

note = "Funding Information: The authors acknowledge Dr. P.D. Jablonski (NETL) for supplying the J5 alloy, and Dr. R. Bhat (GE Global Research Center), Dr. J.D. DeFouw, and J.A. Scott (Northwestern University) for useful discussions. This research was supported by NASA through a subcontract from the General Electric Company (award NNC06CB31C). Y.B. also acknowledges Chulalongkorn University for the Grant for Development of New Faculty Staff (1/2008). ",

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doi = "10.1016/j.actamat.2008.11.027",

language = "English (US)",

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AU - Boonyongmaneerat, Yuttanant

AU - Dunand, David C.

N1 - Funding Information: The authors acknowledge Dr. P.D. Jablonski (NETL) for supplying the J5 alloy, and Dr. R. Bhat (GE Global Research Center), Dr. J.D. DeFouw, and J.A. Scott (Northwestern University) for useful discussions. This research was supported by NASA through a subcontract from the General Electric Company (award NNC06CB31C). Y.B. also acknowledges Chulalongkorn University for the Grant for Development of New Faculty Staff (1/2008).

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Y1 - 2009/3

N2 - A set of analytical models based on engineering beam analysis is developed to predict creep behavior of cellular materials over a broad range of relative density. Model predictions, which take into account the presence of mass at strut nodes and consider different possible deformation mechanisms and foam architectures, are compared to experimental creep results for a replicated nickel-base foam and a reticulated aluminum foam. As porosity decreases, the controlling creep mechanism in the foams changes from strut bending, to strut shearing, and ultimately to strut compression.

AB - A set of analytical models based on engineering beam analysis is developed to predict creep behavior of cellular materials over a broad range of relative density. Model predictions, which take into account the presence of mass at strut nodes and consider different possible deformation mechanisms and foam architectures, are compared to experimental creep results for a replicated nickel-base foam and a reticulated aluminum foam. As porosity decreases, the controlling creep mechanism in the foams changes from strut bending, to strut shearing, and ultimately to strut compression.

KW - Creep

KW - Foams

KW - Metallic foams

KW - Porous materials

KW - Sponges

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DO - 10.1016/j.actamat.2008.11.027

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EP - 1384

JO - Acta Materialia

JF - Acta Materialia

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Effects of strut geometry and pore fraction on creep properties of cellular materials

Abstract

Keywords

ASJC Scopus subject areas

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