A geometric model for the fracture toughness of porous materials

Publikationstyp
Journal Article
Date Issued
2018-06-01
Sprache
English
Author(s)
Jelitto, Hans  
Schneider, Gerold A.  
Institut
Keramische Hochleistungswerkstoffe M-9  
TORE-DOI
10.15480/882.1730
TORE-URI
http://tubdok.tub.tuhh.de/handle/11420/1733
Journal
Acta materialia  
Volume
151
Start Page
443
End Page
453
Citation
Acta Materialia (151): 443-453 (2018)
Publisher DOI
10.1016/j.actamat.2018.03.018
Scopus ID
2-s2.0-85045692255
Publisher
Elsevier
Different models for the fracture toughness, KIC, of porous materials have been proposed to describe KIC as a function of the porosity P. They have in common that beside P at least one additional parameter exists that has to be adjusted to the measured data. Based on the cubic structure, we present a geometrical 3D model without any arbitrary parameter, which predicts the KIC the toughness, GC, and the Young's modulus, E, of a porous material. The model comprises three variants, depending on the material properties like open or closed porosity. It is in good agreement with a large amount of experimental data from different research groups.
Subjects
fracture toughness
toughness
elastic properties
porosity
modeling
DDC Class
540: Chemie
620: Ingenieurwissenschaften
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by-nc-nd/4.0/
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