http://nopr.niscpr.res.in/handle/123456789/40666 Fri, 09 Oct 2026 09:55:28 GMT 2026-10-09T09:55:28Z http://nopr.niscpr.res.in/handle/123456789/40683 Title: Effect of linear density of feed yarn filaments and air-jet texturing process variables on compressional properties of fabrics Authors: Baldua, R K; Rengasamy, R S; Kothari, V K Abstract: Effect of filament fineness and process parameters employed in the production of air-jet textured yarns has been studied on the compression and recovery of union fabrics made from air-jet textured yarns as weft and twisted filament yarns as warp. Filament linear density and process parameters such as overfeed, air pressure and texturing speed affect the textured yarn structure and hence fabric properties. The individual effect of filament fineness and process variables in the production of air-jet textured yarn has been studied in terms of potential contribution and normalized regression coefficient on fabric low load compression behavior. Fabric low load compression-recovery behavior has been analyzed in terms of compression parameter, recovery parameter and resiliency. Analysis shows that most dominating factor to explain the low load compression properties of air-jet textured yarn fabric is overfeed percentage, while linear density per filament is most dominating factor affecting fabric resiliency. Page(s): 9-16 Wed, 01 Mar 2017 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/40683 2017-03-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/40682 Title: Finite element analysis of mechanical properties of 2.5D angle-interlock woven composites: Part 1— Full-cell model and its validation Authors: Song, Jian; Wen, Weidong; Cui, Haitao Abstract: A new parameterized micro-structural model of 2.5D angle-interlock woven composites, named ‘full-cell model’, has been established. In order to verify the validation of finite element model (FEM) based on the full-cell model, the effective elastic properties and the mechanical response of 2.5D woven composites are presented. Additionally, the effects of fibre aggregation density and thickness on the mechanical properties are also investigated in detail. The experimental results are compared with the values of FEM based on the full-cell model and inner-cell model. Page(s): 17-24 Wed, 01 Mar 2017 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/40682 2017-03-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/40681 Title: Comfort properties and dyeing behaviour of cotton/milkweed blended rotor yarn fabrics Authors: Karthik, T; Murugan, R; Sakthivel, J C Abstract: Milkweed (M) fibres have been blended with cotton (C) fibres at three different proportions and the rotor-spun yarn fabrics are produced. The comfort properties of 100% cotton and C/M blended fabrics are analysed. The fabrics have been dyed with two types of reactive dyes, namely CI Reactive Yellow 3RS and CI Reactive Red 120, and the colour strength and other calorimetric parameters of the dyeing are analysed. From the comfort properties of the fabrics, it is noticed that the air and water vapour permeabilities of C/M blended fabrics are lower than the 100% cotton fabric and decrease with the increase in milkweed proportion. The thermal conductivity of C/M blended fabrics is lower than 100% cotton fabric and decreases with the increase in milkweed proportion. The reduction in inter-yarn space and higher yarn hairiness leads to reduction in air, water and thermal conductivity values with the increase in milkweed proportion. The wickability of C/M blended fabrics increases with milkweed proportion due to the open yarn structure and hollowness of milkweed fibres. From the dyeing behaviour of fibres, it is observed that the colour strength of C/M 80/20 is higher than 100% cotton and it decreases with the further increase in milkweed blend proportion. The low cellulose percentage, higher crystalline orientation index of milkweed fibres compared to cotton results in lower colour strength values with milkweed percentage greater than 20%. Page(s): 25-30 Wed, 01 Mar 2017 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/40681 2017-03-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/40680 Title: Effects of different production processing stages on mechanical and surface characteristics of polylactic acid and PET fibre fabrics Authors: Hasani, Hossein; Avinc, Ozan; Khoddami, Akbar Abstract: This paper reports study on the polylactic acid (PLA) and polyester (PET) knitted fabrics mechanical and surface characteristics at low-stress and the influence of typical commercially applied different production processing stages on the properties. The KES-FB is used for the investigation of low-stress bending, compression, tensile, shear and surface characteristics. The results show remarkable changes after each processing stage, such as scouring, drying, dyeing, heat setting and softening, in mechanical and surface characteristics of PLA and PET fibre knitted fabrics. PLA knitted fabrics represent higher values in bending, shear and surface properties after different processing stages as compared to PET knitted fabrics. The values of bending rigidity (B), bending hysteresis (2HB), shear stiffness (G), and shear hysteresis (2HG and 2HG3) have been significantly decreased after the scouring treatment. There is a considerable decrease in B, 2HB, G, 2HG and 2HG3 values and an improvement in tensile elongation (EMT) after dyeing of PET and PLA fabrics. A slight reduction in shear and bending properties of polylactic acid fibre fabricsshows that softening treatment decreases the inter fibre and inter yarn friction. LT (linearity of load-extension curve), RT (recovery from tensile deformation), LC (linearity of compression curve) and RC (recovery from compression deformation) properties are not found quite sensitive for different production processing stages in case of both the fabrics. Page(s): 31-37 Wed, 01 Mar 2017 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/40680 2017-03-01T00:00:00Z