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Constructions of Textile Fabrics
Published in Robert Mather, John Wilson, Solar Textiles, 2023
In twill weaves, the yarns interlace after two or more crossings. As a result, there are a series of diagonal lines on at least one side of the fabric, which give rise to ridges on the fabric surface. These ridges will render the even deposition of thin PV and conducting layers more difficult to achieve, and it is perhaps worth noting here that twill fabrics are seldom printed. In many cases, the twill lines lie at 45°. Twill fabrics are noted for their durability and tend to feel softer than comparable plain weave fabrics. In addition, twill fabrics tend to possess higher strength than can be achieved in comparable plain weave structures, because the fewer interlacing points allow greater proximity of adjacent weft and warp yarns. The fabric count is higher. A problem with twill fabrics is their propensity to develop shine at points where abrasion is greatest. Abrasion tends to flatten the diagonal ridges, and more light is consequently reflected. Twill fabrics are also prone to twisting, which could lead to cracking and delamination of deposited layers. On the other hand, there is least bending and compression of the yarns at crossover points, a factor providing some mechanical stability.
Fabric Formation and Recent Developments
Published in Asis Patnaik, Sweta Patnaik, Fibres to Smart Textiles, 2019
Rajesh Mishra, Mohanapriya Venkataraman, Veerakumar Arumugam
The twill weave is produced in a stepwise progression of the warp yarn interlacing pattern, which results in the appearance of a diagonal line in the fabric. The weave is widely used for ornamentation of the cloth. This design helps to achieve greater weight, closer setting and better draping characteristics of the fabric when compared with plain weave fabric produced from the same yarn. Twill lines are formed on both sides of the fabric; however, if warp float predominates on one side of the cloth, the weft float will predominate on the other side in the same proportion (Behera and Hari 2010).
Textile Greige Fabrics (Woven and Knitted)
Published in Sheraz Ahmad, Abher Rasheed, Ali Afzal, Faheem Ahmad, Advanced Textile Testing Techniques, 2017
Muhammd Umair, Muhammad Umar Nazir, Sheraz Ahmad, Abher Rasheed, Ali Afzal, Faheem Ahmad
There is distinct difference between the front and back of twill weave design. There should be a proper balance between the rows so that the final structure gives a unique slanting appearance. A common example of twill weave design is denim fabric.
Study on the influence of constructional parameters on performance of outer layer of thermal protective clothing
Published in The Journal of The Textile Institute, 2023
Rochak Rathour, Apurba Das, Ramasamy Alagirusamy
All fabric samples were developed with constant ends per inch 42. The material, which is used for samples are meta aramid (100% Z twist 3/40 and 2/40 Ne) and para aramid yarn (100% Z twist 3/40 Nm). All types of yarns are directly purchased from the market. The pick density of all samples are 40, 50 and 60. The resultant linear density of 3 ply and 2 ply meta aramid yarn is 44.29 tex and 29.5 tex respectively. The resultant linear density of para aramid yarn is 28.2 tex. All fabric samples were developed in plain weaves, two types of twill weaves (twill 2/2 and twill 3/1), 5 end sateen weaves and honeycomb weaves. The specification and material used in warp and weft direction of all fabric samples are described in Table 1. The density of meta aramid and para aramid fibre is 1370 and 1440 kg/m3 respectively.
An experimental study on the effects of introducing carbon nanotube on low velocity impact behavior of carbon/aramid fiber reinforced intra-ply hybrid composites
Published in The Journal of The Textile Institute, 2023
Farzin Azimpour-Shishevan, M.A. Mohtadi-Bonab
Woven intra-ply hybrid textile was purchased from Jiaxing Doshine New Material Co., Ltd, China. The aramid and carbon threads were woven together in twill 2/2 pattern. Moreover, each thread was consisted of 1400 yarn filaments as a reinforcement. This pattern of textile was recognized by its diagonal parallel lines named as Wales. Designated 2/2 numerator indicating two threads of aramid fiber as warp thread must pass over two carbon threads as weft (see Figure 1a). In other words, as seen from Figure 1, twill weave is formed by passing the weft yarn under and over multiple warp yarns, in an alternating sequence which creates a diagonal ribbed pattern on fabrics surface generally. The areal weight and thickness of weaved CAFRP fabrics are 165 ± 10 gr/m2 and 0.2 ± 0.03 mm respectively. The epoxy which was used as matrix of composite included Araldite LY 1564 as hardener was purchased from New Delhi, India. This hardener is a modified low viscosity bisphenol-A epoxy resin available in liquid form. It is recommended as hardner for epoxy resin in the structure of classic and multi scale composites in filament winding and resin transfer molding fabrication process. The density and modulus of elasticity of used epoxy were 1.2 g/cm3 and 3 GPa, respectively. The schematic of curing process for CAFRP intra-ply hybrid composite was shown in Figure 1b.
Fabric hand research translates senses into numbers – a review
Published in The Journal of The Textile Institute, 2022
Meenakshi Ahirwar, B. K. Behera
The weaves used for the fabric hand study were plain, twill, and satin. While varying the weave other parameters were kept constant. It was observed that the stiffness value for plain weave fabric was higher as compared to twill and satin. The smoothness value was higher for twill fabrics. Smoothness attribute is related to decrease in tensile and compressional energy. Twill weave shows higher fullness as compared to plain and satin weave. Twill fabric has higher extensibility and in plain weave tensile properties are higher than twill and satin. Sateen and twill weave had lower geometrical roughness compared to plain fabrics. Linearity of compression and compressional resiliency are higher for twill weave. Fabric thickness is also higher for twill and satin as compared to plain. Thus, plain weave has higher stiffness, lower smoothness, and fullness whereas twill and satin both have higher stiffness, smoothness, and fullness value and higher THV. The results are shown in Figure 7.