The Effective Medium Theory Model (EMTM) used in this work is based on the assumption that every phase of the matrix is embedded in a homogeneous medium with conductivity keff to be determined self-consistently. It is based on dilute spherical inclusions of one phase embedded in a matrix of a second phase. Several Samples of composite ceramics that are mechanically strong, relatively non-porous and anisotropic have been investigated. A comparison between the measured data and the results predicted by EMTM were made to validate the model for these ceramic samples. In particular, we investigate the effect of mineralogy (constituents) in ceramics and their spatial distribution profile to validate the homogeneity conditions of the model. Preliminary indicators of validation were used to check the bulk and surface homogeneities. This can be done either by roughly estimating Wiener bounds or by examining microscopically the surfaces of the samples. It turns out that the EMTM is a suitable one to estimate keff provided that the homogeneity conditions are satisfied.
| Published in | Advances in Materials (Volume 5, Issue 5) |
| DOI | 10.11648/j.am.20160505.13 |
| Page(s) | 44-50 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2016. Published by Science Publishing Group |
Thermal Conductivity, Effective Medium Theory, Ceramics, Composites
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APA Style
Bashir M. Suleiman. (2016). Validations of a Model to Estimate Thermal Conductivities of Ceramics. Advances in Materials, 5(5), 44-50. https://doi.org/10.11648/j.am.20160505.13
ACS Style
Bashir M. Suleiman. Validations of a Model to Estimate Thermal Conductivities of Ceramics. Adv. Mater. 2016, 5(5), 44-50. doi: 10.11648/j.am.20160505.13
AMA Style
Bashir M. Suleiman. Validations of a Model to Estimate Thermal Conductivities of Ceramics. Adv Mater. 2016;5(5):44-50. doi: 10.11648/j.am.20160505.13
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Download@article{10.11648/j.am.20160505.13,
author = {Bashir M. Suleiman},
title = {Validations of a Model to Estimate Thermal Conductivities of Ceramics},
journal = {Advances in Materials},
volume = {5},
number = {5},
pages = {44-50},
doi = {10.11648/j.am.20160505.13},
url = {https://doi.org/10.11648/j.am.20160505.13},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20160505.13},
abstract = {The Effective Medium Theory Model (EMTM) used in this work is based on the assumption that every phase of the matrix is embedded in a homogeneous medium with conductivity keff to be determined self-consistently. It is based on dilute spherical inclusions of one phase embedded in a matrix of a second phase. Several Samples of composite ceramics that are mechanically strong, relatively non-porous and anisotropic have been investigated. A comparison between the measured data and the results predicted by EMTM were made to validate the model for these ceramic samples. In particular, we investigate the effect of mineralogy (constituents) in ceramics and their spatial distribution profile to validate the homogeneity conditions of the model. Preliminary indicators of validation were used to check the bulk and surface homogeneities. This can be done either by roughly estimating Wiener bounds or by examining microscopically the surfaces of the samples. It turns out that the EMTM is a suitable one to estimate keff provided that the homogeneity conditions are satisfied.},
year = {2016}
}
TY - JOUR T1 - Validations of a Model to Estimate Thermal Conductivities of Ceramics AU - Bashir M. Suleiman Y1 - 2016/10/11 PY - 2016 N1 - https://doi.org/10.11648/j.am.20160505.13 DO - 10.11648/j.am.20160505.13 T2 - Advances in Materials JF - Advances in Materials JO - Advances in Materials SP - 44 EP - 50 PB - Science Publishing Group SN - 2327-252X UR - https://doi.org/10.11648/j.am.20160505.13 AB - The Effective Medium Theory Model (EMTM) used in this work is based on the assumption that every phase of the matrix is embedded in a homogeneous medium with conductivity keff to be determined self-consistently. It is based on dilute spherical inclusions of one phase embedded in a matrix of a second phase. Several Samples of composite ceramics that are mechanically strong, relatively non-porous and anisotropic have been investigated. A comparison between the measured data and the results predicted by EMTM were made to validate the model for these ceramic samples. In particular, we investigate the effect of mineralogy (constituents) in ceramics and their spatial distribution profile to validate the homogeneity conditions of the model. Preliminary indicators of validation were used to check the bulk and surface homogeneities. This can be done either by roughly estimating Wiener bounds or by examining microscopically the surfaces of the samples. It turns out that the EMTM is a suitable one to estimate keff provided that the homogeneity conditions are satisfied. VL - 5 IS - 5 ER -
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