In this study, two different types of liquid cooling garments are designed and their cooling effects are comparatively investigated. The tubing lengths and the inner layers of these garments are taken as the same, and the other parameters of the garments differed. In the outer layer of the garments, 10 × 3 rib and single jersey knitted wool fabrics are used. In the inner layer of the fabrics, cotton wound dressings are used. In one garment design, S-shaped sponges are used as the mid layer. For 10 × 3 rib the mid layer is obtained by three loops of 10 × 3 rib, and the outer layer is obtained by 10 loops of 10 × 3 rib, due to its three-dimensional structure. To test these garments, a thermal manikin and a chiller are developed. The effects of water inlet temperature and flow rate on the cooling effect are examined. Outer garments of 10 × 3 rib structure are found to provide effective cooling. When the water inlet temperature decreases, the effective cooling slightly increases. At lower flow rates, effective cooling increases slightly, while this effect disappears for higher flow rates.
A model for the spirality of plain knitted fabrics with compressible yarns is given here by modifying Kurbak's (1998) plain knitted loop model. The proposed model is thought to be applicable not only to the spirality of classical textiles, but also to modeling small diameter tubular technical textile fabrics. In the present study, it is suggested that because of the three-dimensional nature of the plain loop, the yarn part at the left arm of the loop and the yarn part at the right arm of the loop have torsions in opposite directions, so that if the yarn used is already twist lively, this potential twist applies in the same direction for both of the arms. Therefore, the total twist decreases in one arm and increases in the other. To equalize their total twists, the curves of the yarn axis in the arms differ from each other (the elliptical cylinders on which the yarn arms wrapped differ in length and in radius). The upper and lower parts of the loop adjust themselves by transforming into parametric elliptical shapes from their original elliptical shapes. There is another method of twist redistribution in the fabrics, which is to differentiate the wrapping angles of the helices on two arms of a loop. This is defined as “the second kind of spirality” and is mainly seen in m × n rib structures as well as in some of the technical textile plain knitted fabrics. This second kind of spirality is not considered during the creation of the model, but a discussion is given on this subject at the end of the work.
In this work the geometrical model of a tuck stitch and its effect on the plain knitted fabric structure are introduced. The geometrical model of this knit + tuck combination is created here for the first time, being a pioneering basic work on knit + tuck combinations. This model is then plotted using 3DS Max software. It is shown that the obtained shapes are exactly the same shapes observed in real fabrics.
‘The smart textiles’ concept has to develop products based not only on design, fashion and comfort but also in terms of functions. The novel electro-textiles in the market open up new trends in smart and interactive gadgets. ‘Easy to care and durability’ properties are among the most important features of these products. On the other hand, wearable electronic knitwear has been gaining the attention of both researchers and industrial sectors. Combining knitting technology with electronics may become a dominant trend in the future because of the wide application possibilities. This research is concerned primarily with the design methodology of knitted fabrics containing electrically conductive textiles and especially in-use performance studies. The structural characteristics of the fabrics have been evaluated to enhance the performance properties.
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