Paper Title:
Multiscale Modelling of Gradual Degradation in Al2O3/ZrO2 Ceramic Composites under Tension
  Abstract

Two-phase ceramic composite materials, (CMC, e.g. Al2O3/ZrO2), have a non-linear and complex overall response to applied loads due to: different phases, existence of an inital porosity, development of limited plasticity and internal microdefects. All microdefects act as stress concentrators and locally change the state of stress, leading to the development of mesocracks and finally macrocracks. Experimental results show that defects develop mainly inter-granular and cause inhomogeneity and induced anisotropy of the solid. Modelling of such material response is possible by multiscale approach describing different phenomena occuring at different scales: micro- meso- and macro- ones. The paper presents uniaxial tension process of the Al2O3/ZrO2 composite with the gradual degradation of the material properties due to different defects development.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
2743-2748
DOI
10.4028/www.scientific.net/MSF.638-642.2743
Citation
T. Sadowski, L. Marsavina, "Multiscale Modelling of Gradual Degradation in Al2O3/ZrO2 Ceramic Composites under Tension", Materials Science Forum, Vols. 638-642, pp. 2743-2748, 2010
Online since
January 2010
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Price
$32.00
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