Influence of filament distribution on transverse tow permeability: Model predictions and experimental validation

Godbole, Mayur G and Purandare, Rahul and Harshe, Rahul and Hood, Avinash and Gururaja, Suhasini and Joshi, Makarand and Advani, Suresh (2019) Influence of filament distribution on transverse tow permeability: Model predictions and experimental validation. In: COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 118 . pp. 150-161.

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Abstract

In the past, various analytical and semi-analytical permeability models have been implemented for process modeling of flow through single scale fabric with reasonable success. However, characterization of permeability for a dual scale fabric is relatively more complex requiring specification of permeability at tow and fabric length scales. In the current work, a semi-analytical model for transverse tow permeability is developed taking into consideration the details of microstructural filament arrangements within a single tow by conducting detailed scanning electron microscopy (SEM) of a cured tow cross-section. The current analysis indicates that by explicitly accounting for said local fiber volume fraction and its distribution, the transverse tow permeability predictions improve when compared to existing analytical results. In addition, a new experimental methodology for transverse tow permeability characterization has been developed and presented. The predictions considering locally varying fiber volume fractions were found to match well with the experimentally evaluated tow permeability.

Item Type:	Journal Article
Publication:	COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Publisher:	ELSEVIER SCI LTD
Additional Information:	Copyright of this article belongs to ELSEVIER SCI LTD
Keywords:	Liquid composite molding; Transverse tow permeability; SEM; Filament distribution
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	23 Feb 2019 08:38
Last Modified:	23 Feb 2019 08:38
URI:	http://eprints.iisc.ac.in/id/eprint/61804

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