ISSN: 0090-3973
Page Count: 10

A New Assessment Method for the Bulk Modulus and the Poisson's Ratio of Porous Ceramics

Yeheskel, O
Nuclear Research Center—Negev,

Tevet, O
Nuclear Research Center—Negev,

(Received 28 June 1999; accepted 25 February 2000)

Abstract

A new assessment method for the elastic moduli of porous materials is proposed. This method is based on a linear correlation between the Young's and the shear moduli of a given porous material. It is shown that such a correlation prevails for ceramics (Al2O3,ThO2,andZnO) and for glass (SiO2) having Poisson's ratios of the solid bulk in the range of 0.15<ν0≤0.36. The outcome of the new assessment method is the use of either an elastic modulus or a sound velocity as the parameter for non-destructive assessment of the bulk and the Poisson's ratio of porous ceramics. These findings open a simplified route to quantitative non-destructive evaluation (QNDE) of the elastic moduli of porous materials.

Keywords:
quantitative non-destructive evaluation (QNDE), elastic modulus, elastic constants, sound wave velocity, porosity, ceramic, aluminum oxide, thorium oxide, zinc oxide, silicon dioxide, glass

Paper ID: JTE12094J
DOI: 10.1520/JTE12094J
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