Chapter 36. Microscopic Simulation of Microcrack Propagation in Ai2O3-Zro2 Ceramic Composites

  1. Mrityunjay Singh and
  2. Todd Jessen
  1. Jianwu Cao1,
  2. Yoshihisa Sakaida2 and
  3. Minoru Matsui2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294680.ch36

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3

How to Cite

Cao, J., Sakaida, Y. and Matsui, M. (2001) Microscopic Simulation of Microcrack Propagation in Ai2O3-Zro2 Ceramic Composites, in 25th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 22, Issue 3 (eds M. Singh and T. Jessen), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294680.ch36

Author Information

  1. 1

    Japan Fine Ceramics Center 2–4-1, Mutsuno, Atsuta-ku Nagoya 456–8587, Japan

  2. 2

    Synergy Ceramics Laboratory, Fine Ceramics Research Association, 2–4-1, Mutsuno, Atsuta-ku Nagoya 456–8587, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2001

ISBN Information

Print ISBN: 9780470375730

Online ISBN: 9780470294680

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Keywords:

  • microcrack;
  • heterogeneous;
  • crystallographic;
  • propagation;
  • micrograph

Summary

In order to develop a new technique to link macro and micro properties of heterogeneous ceramics, a criterion of microcrack propagation and the algorithm of crack propagation simulation were discussed. A two-dimensional FEM model was constructed from SEM micrograph of an Al2O3-10vol%ZrO2 ceramics. The crystallographic information was given to each grain randomly. An initial microcrack with same order in length as average grain size was introduced in the model. The stress distribution and the simulation of microcrack propagation were analyzed by a finite element method. The analysis results showed that the crack propagation path was affected by ZrO2 grains. An attempt to simulate the relationship between micro cracking path and macro mechanical behavior was made by relating the analysis result of four-point bending macro model and analysis results of crack propagation path in micro model.