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EFFECTIVE MECHANICAL PROPERTIES OF CARBON-CARBON COMPOSITES

Sudhir, Aswathi and Nagaraja, Abhilash M and Gururaja, Suhasini (2015) EFFECTIVE MECHANICAL PROPERTIES OF CARBON-CARBON COMPOSITES. In: ASME International Mechanical Engineering Congress and Exposition (IMECE2014), NOV 14-20, 2014, Montreal, CANADA.

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Abstract

In recent times, composite materials have gained mainstream acceptance as a structural material of choice due to their tailorability and improved thermal, specific strength/stiffiiess and durability performance 1-3). For high temperature applications, which include exit nozzle for rockets, leading edge for missiles, nose cones, brake pads etc. Carbon-Carbon composites (C/C composite) are found suitable 4-61 Mechanical property estimation of C/C composites is challenging due to their highly heterogeneous microstructure. The highly heterogeneous microstructure consists of woven C-fibers, C-matrix, irregularly shaped voids, cracks and other inclusions. Predicting the mechanical behavior of complex hierarchical materials like C/C composites is of interest which forms the motivation for the present work. A systematic study to predict the effective mechanical properties of C/C composite using numerical homogenization has been undertaken in this work. The Micro-Meso-Macro (MMM) principle of ensemble averages for estimating the effective properties of the composite has been adopted. The hierarchical length scales in C/C composites were identified as micro (single fiber with matrix), meso (fabric) and macro (laminate). Comparisons have been made with mechanical testing of C/C composites at different length scales.

Item Type: Conference Proceedings
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Additional Information: Copy right for this article belongs to the AMER SOC MECHANICAL ENGINEERS, THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 17 Jun 2016 04:46
Last Modified: 17 Jun 2016 04:46
URI: http://eprints.iisc.ernet.in/id/eprint/54030

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