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Elastic properties of a tungsten-silver composite by reconstruction and computation

A. P. Roberts·E. J. Garboczi
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Abstract

We statistically reconstruct a three-dimensional model of a tungsten-silver composite from an experimental two-dimensional image. The effective Young's modulus ($E$) of the model is computed in the temperature range 25-1060^o C using a finite element method. The results are in good agreement with experimental data. As a test case, we have reconstructed the microstructure and computed the moduli of the overlapping sphere model. The reconstructed and overlapping sphere models are examples of bi-continuous (non-particulate) media. The computed moduli of the models are not generally in good agreement with the predictions of the self-consistent method. We have also evaluated three-point variational bounds on the Young's moduli of the models using the results of Beran, Molyneux, Milton and Phan-Thien. The measured data were close to the upper bound if the properties of the two phases were similar ($1/6 < E_1 /E_2 < 6$).

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A. P. Roberts, E. J. Garboczi. 1999-01-28. Elastic properties of a tungsten-silver composite by reconstruction and computation. https://doi.org/10.1016/s0022-5096(99)00016-2

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