Chapter 25. Macro-Micro Stress Analysis of Porous Ceramics by Homogenization Method

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. Yasushi Ikeda1,
  2. Yasuo Nagano1,
  3. Hiroshi Kawamoto1 and
  4. Naoki Takano2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291184.ch25

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

How to Cite

Ikeda, Y., Nagano, Y., Kawamoto, H. and Takano, N. (2004) Macro-Micro Stress Analysis of Porous Ceramics by Homogenization Method, in 28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291184.ch25

Author Information

  1. 1

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

  2. 2

    2) Dept. of Manufacturing, Faculty of Engineering, Osaka University 2–1, Yamadaoka, Suita-city, 565–0871, Osaka, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051498

Online ISBN: 9780470291184

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Keywords:

  • CT;
  • RVE;
  • FEM;
  • voxelcon hg;
  • actis

Summary

The 3-D image modeling of the porous alumina was obtained by X-ray CT, and microscopic volume elements were obtained from it. Porous alumina including spherical pores 60μm and 20μm in diameter with porosities 7.05% and 1.76% were studied by homogenization method, which calculated homogenized elastic constants for the microscopic volumes. These constants were applied to simulate 4-point bending tests and to analyze macroscopic stress distributions coupled with FEM calculation. Microscopic stress distributions were analyzed using the FEM result. the maximum microscopic stress concentration near a spherical pore were about 2 times higher than the average stress one.