Angle interlock fabrics

Figure 2.5 Angle interlock fabric (a) warp plan for the ply-to-ply interlock fabric and definition of the interlacing sites (b) cross-sections calculated (above) and observed (below).

The composite fabric manufacturing industry has focused its efforts on producing 2D fabrics that have consistent and stable dimensions and with minimum damage. Work on 3D fabric structures has produced orthogonal fabrics (Bogdanovich and Mohamed, 2009) and angle interlock fabrics as... 

Miller, W.T., Calamito, D.P., Pusch, R.H., 1990. Woven multi-layer angle interlock fabrics having fill weaver yams interwoven with relatively straight extending warp yams. US Patent 4,958,663 September 25, 1990 to Hitco, Cleveland, Ohio. 

Chen and his coworkers (1992) reported that the angle-interlock fabrics have low shear rigidity. It was further reported that such a weave stmcture has led to good... 

Figure 13.3 Cross-section structures of angle-interlock fabrics with five layers of weft yams, left top to bottom binding middle binding to the third layer, and right warp wadded fabric.

Figure 13.12 presents the energy absorption of six 3D Kevlar fabrics with comparison to the 2D plain weave fabric, which is widely used for body amour production for police and military personnel. It was foimd that (a) 3D honeycomb fabrics and the same layer 2D plain fabric The two- and four-layered 3D fabrics performed better than the assembly with the same layer 2D plain woven fabric of similar yam density. The twolayered fabric with lower yam density performed less well than the one with higher yam density, (b) AU the 2D woven fabrics have the ability to absorb more projectile impact energy compared to the three 3D angle-interlock fabrics. 

When comparisons were made on the energy absorbed by the fabric on a per imit impact energy basis, presented in Figure 13.13, the same conclusions were made that 3D honeycomb fabrics performed better than 2D plain weave, and 2D plain weave showed better performance than 3D angle-interlock fabrics. 

Figure 13.16 illustrates, in practice, how the angle-interlock fabric is domed up and the curve retracts to almost the normal shape for a front panel pattern of female body armour. It also shows a good agreement between the domed pattern and the projection block. 

Figure 13.17 3D angle-interlock fabric, developed single-piece hehnet shell and finished look of developed single-piece riot helmet shell. 

Boussu, R, Legrand, X., Nauman, S., Binetruy, C., 2008. Mouldability of angle interlock fabrics. In Ninth International Conference on Flow Processes in Composite Materials, Montreal, Canada. 

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