Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 68, Issue 15-16, Pages 3184-3192Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2008.07.015
Keywords
Laminate; Microstructure; Statistics
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The knowledge of thermal properties of orthotropic layered composite materials is very important in the aeronautics industry. They can be measured with a dedicated apparatus but numerical computations develop strongly. It is well known that the microstructure has a strong impact on the calculation of the effective properties of these heterogeneous materials. The representative volume element (RVE) is then a crucial input to predict reliable results. In composites, fibre distribution often exhibits fibre-rich and fibre-poor regions. In this contribution, we first investigated a quantitative characterization of the microstructure using optical images and spatial descriptors. They give rise to microstructural features but also anisotropy. In a second time, we defined the RVEs of this microstructure for statistical parameters and effective thermal conductivities. (c) 2008 Elsevier Ltd. All rights reserved.
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