NOPR Collection:

Cooling garments—A review

Mon, 01 Dec 2014 00:00:00 GMT

Title: Cooling garments—A review Authors: Sarkar, Soumyajit; Kothari, V K Abstract: Thermal discomfort is one the major challenges during work in hot and/or humid environments like mines, foundries and arid/desert regions. Heat and moisture management is the key to prevent the workers from heat stress. Personnel protective garments alone are not sufficient to provide thermal neutrality. Auxiliary cooling garments are required to aid the process of human body cooling. This review consists of human thermoregulation, followed by different types of cooling garments, and their advantages and disadvantages. Page(s): 450-458

High active sportswear – A critical review

Mon, 01 Dec 2014 00:00:00 GMT

Title: High active sportswear – A critical review Authors: Manshahia, M; Das, A Abstract: The fabrics used for active sportswear are specially constructed in terms of the geometry, packing density and structure of the constituent fibres in yarn as well as their construction in order to achieve the necessary dissipation of heat and moisture. Performance of player can be enhanced by specialised sportswear like compression athletic wear and other innovative products like biomimetic swimwear. Specialised products are continuously being innovated where usually performance, quality, design and not the price seem to be determining factor. This paper reports the functional requirement of high active sportswear, various aspects of sportswear comfort, their evaluation methods, effects of fibre parameters like shape and geometry, yarn constructional parameters, fabric structural parameters, finishes, performance enhancement and innovative material for sportswear. Page(s): 441-449

Numerical analysis of the slub yarn breaking strength using finite element method

Mon, 01 Dec 2014 00:00:00 GMT

Title: Numerical analysis of the slub yarn breaking strength using finite element method Authors: Su, Xuzhong; Gao, Weidong; Liu, Xinjin; Xie, Chunping; Zhu, Ye Abstract: The numerical analysis of the slub yarn breaking strength has been made by using the finite element method (FEM). The slub yarn has been considered as skeletal structures since the yarn longitudinal length is much larger than its horizontal cross-section. Then, the accuracy of the proposed FEM model in calculating the slub yarn breaking strength has been validated by comparing the calculated results with the experimental data. This model can be used to calculate the slub yarn breaking strength normally and provides a theoretical support for product design. Page(s): 437-440

Effect of spinning variables on packing density of cotton yarn

Mon, 01 Dec 2014 00:00:00 GMT

Title: Effect of spinning variables on packing density of cotton yarn Authors: Hussain, U; Sarwar, A; Shafqat, A R; Muzaffar, M; Iqbal, M; Zahra, N; Ahmad, F; Hussain, T Abstract: In this study, fibre distribution through the cross-sections of ring-spun yarns and their packing density values has been investigated to provide a better understanding of the internal structures of ring-spun yarns manufactured by changing different spinning variables. After the yarn manufacturing process, diameter, IPI index, uniformity index, single yarn strength, density and hairiness are tested and then evaluation of tests is done on the Minitab and Microsoft Excel. The impact of TPI, spindle speed, count, hairiness and diameter has been analyzed using yarn packing density as a response variable. The aim of present study is to produce a yarn with improved packing density so that the yarn properties could be predetermined. The study shows that the increase in yarn count, TPI and spindle speed increase the yarn packing density. Page(s): 434-436