Phani, Kalyan Kumar and Niyogi, S K (1987) Young modulus of porous brittle solids. Journal of Materials Science, 22 (1). pp. 257-263. ISSN 0022-2461

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A new equation E = E0 (1 - aP)" where E and E0 are the Young's moduli at porosity, P, and zero, respectively, a and n are material constants, has been derived semi-empirically for describing the porosity dependence of Young's modulus of brittle solids. The equation satisfies quite well the exact theoretical solution for the values of Young's moduli at different porosities for model systems with ideal and non-ideal packing geometry. The equation shows excellent agreement with the data on =- and r-alumina over a wide range of porosity. Unlike the existing porosity-elastic modulus equations, the proposed equation satisfies the boundary conditions and is inherently capable of treating isometric closed pores as well as non-isometric interconnected pores. The parameters a and n provide information about the packing geometry and pore structure of the material.

Item Type: Article
Subjects: Microstructure and Characterization
Depositing User: Bidhan Chaudhuri
Date Deposited: 09 Apr 2015 06:41
Last Modified: 09 Apr 2015 06:41

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