Hybrid Fabrics for Structural Composites

Abstract

This article gives an insight into the design considerations that have been considered to design a technical hybrid fabric structure for Radome application. An attempt has been made to study empirical relationship between various structural parameters that have a major influence on the final composite properties. The hybrid fabric structures woven out of E-glass (warp) and PEEK Downloaded from (weft) and E-glass (warp) and polyester (weft) have been designed based on mathematical approach and expressed in terms of geometrical parameters in order to have a complete geometric specification of the fabric. An effort has also been made to understand in a comprehensive manner the interrelationships between geometrical properties of yarns and fabrics and their influence on processing of composites and their performance. The study shows that impregnation of resin within the fiber network is primarily responsible for intimate fiber-fiber contact that contributes for the final properties in the composite and provides a good interface area in the composite. The effect of short processing cycle is also attempted keeping in view the techno-economic aspects and it is found that long process cycle with stand in time at major transition temperatures gives useful properties compared to short process cycle. Glass-polyester-based composites are also prepared and studied to have relative performance of glass-PEEK composites.

Characterization of thermoplastic natural fibre composites made from woven hybrid yarn prepregs with different weave pattern

“…The tightly woven fabrics are typically the choice to maintaining fibre orientation during the manufacturing process and minimizing resin void size due to the shorter impregnation distance. Therefore, the laminar and crosswise flow of resin along and between the fibres, in between the yarns and fabric layers is easier [24,25]. Moreover, basket weave has higher quantity of interlace points per unit area compared to satin.…”

Rapid manufacturing of woven comingled flax/polypropylene composite structures

“…In the past decades, the automotive industry had to deal with two major issues concerning these biobased-composites: i) the ability to process the composite parts both in one step process and reduced production time, ii) by keeping a good quality of obtained structures (resistance to mechanical loading, for example). Nowadays, only few manufacturing processes such as light resin transfer molding (light RTM) or thermalcompression are considered by this industry [9][10][11]. When using conventional heating equipment such as a hot press Picher-Martel et al [12] showed that short carbon fibre/PEEK structures were successfully obtained by thermo-compression in about 40 min at 400°C which is the melting temperature of the resin [12].…”

Structure, Thermal, and Mechanical Behavior of the Polysulfone Solution Impregnated Unidirectional Carbon Fiber Yarns

“…Except for direct polymer melting methods, such as pultrusion and co-extrusion [34,35], currently, there are two main technologies that can be used for continuous fiber-reinforced thermoplastic polymer matrix composite production. One of them is bringing the fiber as close as possible to the thermoplastic polymer matrix before the composite consolidation, which includes powder impregnation [36][37][38], commingled yarn fabrication [39,40], cowoven fabric producing [41,42], and film stacking method [43][44][45] technologies, to reduce void and improve the matrix distribution. The other is synthesizing the thermoplastic polymer matrix directly in the composite fabrication step, such as in situ polymerization, due to the easier process of impregnation of the fiber bundles with low viscosity polymer precursors [46][47][48].…”