Porous microcracked ceramics under comporession: Micromechanical model of non-linear behavior
- Stressstrain curves for porous microcracked ceramics (such as aluminum titanate) under compression exhibit non-linearity, hysteresis, and a sharp increase in stiffness when changing from loading to unloading. A micromechanical model is developed that expresses these features in terms of porosity and crack density. The mentioned features are linked, in a quantitative way, to closures and frictional sliding of microcracks. The model also allows one to extract information on crack densities from stressstrain curves, which provides insight into the evolution of open, closed and sliding cracks. The model is approximate due to uncertainty factors, but its predictions are generally in agreement with the data and the information conveyed by SEM images.
Autor*innen: | Giovanni BrunoORCiD, M. Kachanov |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Journal of the European Ceramic Society |
Jahr der Erstveröffentlichung: | 2013 |
Herausgeber (Institution): | European Ceramic Society |
Verlag: | Elsevier |
Verlagsort: | Oxford |
Jahrgang/Band: | 33 |
Ausgabe/Heft: | 11 |
Erste Seite: | 2073 |
Letzte Seite: | 2085 |
Freie Schlagwörter: | Differential scheme; Friction; Microcracks; Porous ceramics; Stressstrain relations; Uniaxial compression |
DOI: | 10.1016/j.jeurceramsoc.2013.03.012 |
ISSN: | 0955-2219 |
ISSN: | 1873-619X |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 18.09.2014 |