Prediction of the effective coefficient of thermal expansion of heterogeneous media using two-point correlation functions

J. Milhans, D. S. Li, M. Khaleel, X. Sun, H. Garmestani

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Statistical continuum mechanics is used to predict the coefficient of thermal expansion (CTE) for solid oxide fuel cell glass-ceramic seal materials with different morphology and crystallinity. Two-point correlation functions are utilized to represent the heterogeneous microstructure morphology and phase distribution. The model uses two-point correlation functions in conjunction with local properties to predict the effective CTE. Prediction results are comparable to experimental CTE results. The advantage of using the statistical continuum mechanics model in predicting the effective properties of anisotropic media is shown, using the ability to take the microstructure into consideration.

Original languageEnglish
Pages (from-to)3846-3850
Number of pages5
JournalJournal of Power Sources
Volume196
Issue number8
DOIs
Publication statusPublished - 15 Apr 2011
Externally publishedYes

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Keywords

  • Coefficient of thermal expansion
  • Correlation function
  • Solid oxide fuel cell
  • Statistical continuum mechanics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

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