Investigation of the relationship between morphology and permeability for open-cell foams using virtual materials testing

Daniel Westhoff , Jakub Skibiński , Ondřej Šedivý , Bartłomiej Wysocki , Tomasz Wejrzanowski , Volker Schmidt


The effect of the morphology of open-cell foam structures on their functional properties is investigated. A stochastic microstructure model is used to generate representative 3D open-cell foam structures, where morphological properties are systematically varied. Subsequently, permeability of these virtual, but realistic microstructures is determined using the finite volume method. This procedure, which is called virtual materials testing, has recently been employed to investigate the effect of the variation of cell sizes on permeability. In the present paper, we introduce a stochastic microstructure model that can be used to generate structures with varying distribution of (open) face sizes between cells. It turns out that this characteristic strongly influences the so-called constrictivity, a measure for bottleneck effects, which, in turn, has a strong impact on the resulting permeability. Moreover, we show how the virtual materials testing approach can be applied to derive empirical formulas between descriptors of 3D morphology and functionality. Additionally, an experimental validation of the simulation results is performed by printing three of the virtual structures using selective laser melting and subsequent experimental measurement of pressure drop, which allows calculation of the permeability using Darcy's law.
Author Daniel Westhoff - [Universität Ulm]
Daniel Westhoff,,
, Jakub Skibiński (FMSE / DMD)
Jakub Skibiński,,
- Division of Materials Design
, Ondřej Šedivý - [Universität Ulm]
Ondřej Šedivý,,
, Bartłomiej Wysocki (FMSE / DMD)
Bartłomiej Wysocki,,
- Division of Materials Design
, Tomasz Wejrzanowski (FMSE / DMD)
Tomasz Wejrzanowski,,
- Division of Materials Design
, Volker Schmidt - [Universität Ulm]
Volker Schmidt,,
Journal seriesMaterials & Design, ISSN 0264-1275, [0261-3069]
Issue year2018
Publication size in sheets0.5
Keywords in EnglishVirtual materials testing, Microstructure-property relationship, Constrictivity, Permeability, Coefficient of variation
ASJC Classification2210 Mechanical Engineering; 2211 Mechanics of Materials; 2500 General Materials Science
Languageen angielski
1-s2.0-S0264127518302016-main.pdf 4.14 MB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 24-02-2020, ArticleFromJournal
Publication indicators WoS Citations = 3; Scopus Citations = 9; GS Citations = 9.0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 2.424; WoS Impact Factor: 2018 = 5.77 (2) - 2018=5.83 (5)
Citation count*9 (2020-04-18)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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