Resin Capacity of Technical Woven Fabrics: Pore Volume and Pore Shape Simulation
Vol. 21, No. 11, pp. 2664-2674,
Nov. 2020
10.1007/s12221-020-9485-8
PDF
Abstract
Nowadays, technical woven fabrics are broadly utilized as reinforcement of composites. Resin capacity of woven
fabric is one of the main challenges in laminate fabrication. Resin diffusion during fabrication of the composite is extremely
depended on fabric micro-morphology. The geometry of weave unit cell and its pore are fundamental factors in evaluating
resin capacity and resin diffusion within fabrics. The main attempt of this study was obtaining an approach to evaluate resin
capacity of a woven fabric via simulating pore shape and pore volume. For this purpose, four basic unit cells for all kind of
weaves were simulated with the two shapes of tow cross-section: lens and racetrack. Afterwards, 3D shape and volume of
their pores were simulated using this approach. The proposed approach is established on the base of initial data of fabric such
as tow setts, tow titers, planar density and thickness of a technical fabric. To assess the simulation, three types of woven
fabrics namely, plain, twill and satin were impregnated by epoxy resin using vacuum infusion process. The volume fractions
of the matrix and fibers of real composites were compared with simulated ones. It was demonstrated that the approach with
racetrack assumption led to high degree of convergence with experimental results. The maximum relative error of pioneered
method to evaluate volume of the pore in this condition exceeded up to 1.43 %. Suitable correlation between volume
fractions of the pore and void was observed in experimental data. It is experimentally demonstrated that the void volume
fraction of composite will be increased with decrease of pore volume due to difficulty of wetting. In this paper, it is illustrated
that the resin capacity of a woven fabric is a function of vacuum level in vacuum infusion process. For instance, resin
capacity of a certain plain fabric could be reduced up to 10 % under 60 kPa (0.6 bar) of vacuum in contrast with steady state
of fabric at room atmosphere.
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Cite this article
[IEEE Style]
H. R. Sharafat, M. K. Dolatabadi, A. A. A. Jeddi, "Resin Capacity of Technical Woven Fabrics: Pore Volume and Pore Shape Simulation," Fibers and Polymers, vol. 21, no. 11, pp. 2664-2674, 2020. DOI: 10.1007/s12221-020-9485-8.
[ACM Style]
Hamid Reza Sharafat, Mehdi Kamali Dolatabadi, and Ali. A. A. Jeddi. 2020. Resin Capacity of Technical Woven Fabrics: Pore Volume and Pore Shape Simulation. Fibers and Polymers, 21, 11, (2020), 2664-2674. DOI: 10.1007/s12221-020-9485-8.