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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 380The Effect of Partitioning on the Clustering Index...

The Effect of Partitioning on the Clustering Index of Randomly-Oriented Fiber Composites: A Parametric Study

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Abstract:

In the current study, five cases of fiber distributions are considered in a fiber-reinforced composite: one random, three partitioned (one uniform and two biased cases), and one aligned case for benchmarking. The finite element method and the principal component analysis were used to interpret the results of orientation tensors and detect any possible clusterings of a representative volume element (RVE). The obtained effective conductivity values were extensively controlled by the fiber volume fraction. At the same time, the uniformity of the random distributions could be recognized. Cross-partition resistance was also detected for the partitioned cases which contributed to a reduced heat transfer capability. Finally, the clustering indexes did not show a direct correlation with the conductivity results, and thus a case-by-case investigation is recommended to consider the anisotropic aspects of a microstructure.

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Periodical:

Defect and Diffusion Forum (Volume 380)

Pages:

232-241

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.380.232

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Online since:

November 2017

Authors:

Zia Javanbakht*, Wayne Hall, Andreas Öchsner

Keywords:

Fiber Clustering, Finite Element Method, Reinforced Composites, Thermal Analysis

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