Macro-micro stress analysis of porous ceramics by homogenization method

Yasushi Ikeda, Yasuo Nagano, Hiroshi Kawamoto, Naoki Takano

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)177-182
Number of pages6
JournalCeramic Engineering and Science Proceedings
Volume25
Issue number3
Publication statusPublished - 2004 Dec 1
Externally publishedYes
Event28th International Conference on Advanced Ceramics and Composites - Cocoa Beach, FL, United States
Duration: 2004 Jan 252004 Jan 30

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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