Analytical heat conduction model of a composite material based on complete spatial randomness of filler in base matrix

Verma, Ravi and Chatterjee, Aritra and Mustafa, Azlaan and Shivaprakash, N C and Kasthurirengan, S and Behera, Upendra (2017) Analytical heat conduction model of a composite material based on complete spatial randomness of filler in base matrix. In: INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 118 . pp. 292-302.

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Abstract

In this work, we propose a novel analytical model to obtain the thermal conductivity of a composite material comprising of filler particles randomly distributed in a base matrix. The model assumes complete spatial randomness of the filler particles in the matrix and this can be described by Poisson's distribution. This concept has been applied to arrive at the thermal conductivity of a composite material with Aluminium powder as the filler in the Epoxy matrix. The results obtained by the proposed model have been compared with the experimental results as well as with the other established models such as Maxwell model, Bruggeman model, Lewis - Nielsen model, Russell model and Rule of Mixtures. This comparison reveals that the proposed model predicts the experimental results more accurately than the others. Also the proposed model is able to predict the experimental results of thermal conductivity of Aluminium-Epoxy composite over the entire temperature range from 4.2 K to 300 K. When applied to other published experimental data of similar composites, the model is found to predict the results fairly well with minimal aberrations. Due to the non-empirical nature of the proposed model, perhaps it may be useful for the prediction of other properties of composite materials involving the filler in a base matrix. (C) 2017 Elsevier Masson SAS. All rights reserved.

Item Type:	Journal Article
Publication:	INTERNATIONAL JOURNAL OF THERMAL SCIENCES
Additional Information:	Copy right for this article belongs to the ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 23 RUE LINOIS, 75724 PARIS, FRANCE
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for Cryogenic Technology Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	21 Jul 2017 09:05
Last Modified:	21 Jul 2017 09:05
URI:	http://eprints.iisc.ac.in/id/eprint/57441

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