“…Finally, the dimensional stability of dual-core yarns, the ability to retain the shape while subjected to repetitive load in use, was evaluated by imposing cyclic dynamic loading on the yarn. A number of researches on cyclic dynamic loading and extension of the elastane-contained yarn and fabric were reported in the literature [ 9 , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] ].…”
“…Finally, the dimensional stability of dual-core yarns, the ability to retain the shape while subjected to repetitive load in use, was evaluated by imposing cyclic dynamic loading on the yarn. A number of researches on cyclic dynamic loading and extension of the elastane-contained yarn and fabric were reported in the literature [ 9 , [24] , [25] , [26] , [27] , [28] , [29] , [30] , [31] ].…”
“…T € Urksoy et al 22 studied the properties of dual-core yarns containing wool/elastane cores. They examined the effect of production parameters such as twist level, elastane draft, and wool draft on fatigue behavior of dual core-spun yarns using a three-factor experimental design.…”
The scope of this research is to study the effect of yarn structure and yarn count on properties of types of core-spun yarns, including elastic core/T400, elastic core/Lycra, dual core, and tri-core yarns. Five types of yarn structures and three yarn counts were produced. Mechanical properties, yarn irregularity, imperfections, and hairiness were measured. Full-factorial analysis and Tukey tests were performed on the test results. It was concluded from factorial analysis that yarn count, yarn structure, and two-way interaction had a significant effect on yarn properties, except for yarn hairiness where the effect of yarn structure and two-way interaction was not significant. A Tukey pairwise comparison was used in this study to specify exactly the subgroups of yarn count and yarn structure that have a significant mean difference. The scanning electron microscopy (SEM) images of the dual-core yarns and tri-core yarns were performed to illustrate the structure of these yarns.
“…Elastane filaments are made of polyurethanes and have complex structures [ 10 ]. In dual-core yarns, the use of a second filament in the core can provide support to dimensional stability and is useful to take advantage of the properties of different individual components [ 11 ]. The plastic deformation of the dual-core yarn is reported to be lower than conventional ring-spun and single-core yarns [ 9 , 12 ].…”
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