ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Influence of fibre cross-section profile on the multi-physical properties of uni-directional composites

Nakka, R and Phanendra Kumar, A and Harursampath, D and Ponnusami, SA (2023) Influence of fibre cross-section profile on the multi-physical properties of uni-directional composites. In: Composite Structures, 321 .

com_str_321_2023.pdf - Published Version

Download (2MB) | Preview
Official URL: https://doi.org/10.1016/j.compstruct.2023.117321


The present work comprehensively examines the influence of fibre-matrix interface perimeter on the multi-physical properties of uni-directional composite materials. Three-dimensional microstructures (containing fibres of triangular, elliptical, rectangular, C-shape and two-lobe cross-section shape) are analysed to evaluate effective thermal conduction, thermo-elastic and piezo-electric properties. Each of these properties is normalised with the respective property of RVE with circular fibre cross-section; These normalised properties are, objectively, compared with the normalised fibre cross-section perimeter (shape factor). For all the considered properties and fibre cross-sectional shapes, a novel observation is that the property experiences a drop (or rise) in the initial range of the shape factor but rises (or drops) monotonically afterwards. This is in contrast with the existing literature observations, where properties are understood to have only a monotonic increase/decrease with the shape factor. Further, it is observed that the magnitude of the initial drop (or rise) is sensitive to the fibre volume fraction and the fibre-matrix property contrast. In accordance with the literature, a strong correlation is observed among the variation of in-plane shear moduli, transverse thermal conduction and transverse dielectric constants.

Item Type: Journal Article
Publication: Composite Structures
Publisher: Elsevier Ltd
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Fibre composites; Homogenisation; Micro-structure; Multi-physical properties
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 27 Nov 2023 09:42
Last Modified: 27 Nov 2023 09:42
URI: https://eprints.iisc.ac.in/id/eprint/82885

Actions (login required)

View Item View Item