Determination of loop length, tightness factor and porosity of single jersey knitted fabric

Eltahan, Eman; Sultan, Mohamed A.; Mito, Abou-Bakr

doi:10.1016/j.aej.2016.02.006

Cited by 29 publications

(15 citation statements)

References 11 publications

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“…The models of Leaf and Glaskin 20 and Eltahan et al 23 are based on a typical plain (jersey) weft-knitted fabric structure solely comprising plain loops. In comparison, our newly developed geometric model of laid-in weftknitted fabrics involves more yarn elements (ground and inlay yarns), more complex intersection points of knitting loops, and spatial interlooping structures.…”

Section: Review Of the Models Of Leaf And Eltahanmentioning

confidence: 99%

“…Leaf and Glaskin 20 numerically studied weft-knitted structures, and found that the numbers of courses and wales per inch and the yarn diameters influenced the loop length. Suh, 21 Morooka et al 22 and Eltahan et al 23 proposed geometric models for weft-knitted loops with open, normal, and compact structures, based on the model of Leaf and Glaskin. The model of Eltahan et al resembled that of Peirce, 24 as both were based on a fully compact loop structure.…”

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A New Geometric Model of Laid-in Weft-Knitted Fabrics

Fong

Liu

2021

Textile Research Journal

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Inlay yarn and laid-in structures are important technical knitting elements that have been increasingly applied in the structural design of functional textiles in industrial, medical, and wearable electronics fields. However, there is no currently established geometric model to numerically analyze their spatial morphologies and structural properties. This study presents a new geometric model and numerical analysis approach to characterize spatial configurations of inlay yarn and ground yarn in a three-dimensional scenario for laid-in weft-knitted fabrics. Loop lengths of the inlay and ground yarn materials were calculated and analyzed under different contact and deformation conditions to estimate material consumption in this complex interlooping layout. Series of laid-in weft-knitted fabrics made of different combinations of ground and inlay yarns were fabricated with the 1 × 1 laid-in loop pattern and tested for the model validation. The comparisons between the experimental and calculated results indicated that the newly developed geometric model favorably agreed with the experimental measurements regarding the ground loop lengths and inlay loop lengths applied in the laid-in weft-knitted structures. The results indicated the applicability of the developed geometric model of laid-in weft-knitted fabrics with similar structural patterns in practical use. The output of this study provides a theoretical and practical reference for structural and physical properties analysis, material consumption prediction, even cost estimation of laid-in weft-knitted fabrics.

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Section: Review Of the Models Of Leaf And Eltahanmentioning

confidence: 99%

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confidence: 99%

A New Geometric Model of Laid-in Weft-Knitted Fabrics

Fong

Liu

2021

Textile Research Journal

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“…h symbolizes the maximum height of the fall-plate structure in the z-axis. Based on the loop forming principle, h is approximate to the width of one loop, which is related to the machine gauge E. 18 Angle u indicates tangent slope of a point on the underlap curve against the x 0 -axis and can be determined by a derivation of the curve function at that point. The function of underlap is related to n, which theoretically varies from 1 to E 2 , and with the increase of n it is gradually close to a linear one.…”

Section: Solving the Illumination Interactionmentioning

confidence: 99%

Modeling and realization for appearance visualization of Textronic laces

Jiang

Zhang

et al. 2019

Textile Research Journal

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A computing approach based on the warp-knitted fabric structure was presented in this paper to visualize Textronic laces by taking a fall-plate lapping in one course as a targeted unit. Its geometric description was firstly presented on both the projection plane and normal plane of structure depth. Based on this and an improved Blinn–Phong reflection model, illuminative interaction along the yarn width and lapping length was separately studied and then overlaid with empirical weight coefficients to fit a function to solve fall-plate lapping facial illumination. Because the displayed facial feature was illustrated by distinguishing pixels on screen, the continuous solved function was discretized into average grids and each grid was integrating to obtain segmental appearance variation. The variation was then mapped from a Cartesian coordinate to a screen coordinate of pixels to be displayed, while the hidden lapping was eliminated according to the depth-buffer algorithm.

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“…Besides the loop dimensions, which have a great effect on fabric quality and the physical, mechanical, and dimensional properties of the cotton single jersey knitted fabric, there are the machine gauge, needle type, cam type, yarn feeding system, number of feeders, take down system, cloth rolling or spreading, monitoring and control systems, etc. [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Dimensional Characteristics of Knitted Fabrics Made from 100% Cotton and Cotton/Elastane Yarns

Sitotaw

2018

Journal of Engineering

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The dimensional characteristics such as loop length (l), wales per centimeter (wpc), courses per centimeter (cpc), stitch density (s), tightness factor (K), loop shape factor (R) and take-up rate (T) of single jersey, 1x1rib, 1x1 interlock, single pique, and two-thread fleece knitted fabrics made from 100% cotton and cotton/elastane yarns (5% elastane yarn content) are investigated in this research. Dimensional properties of knitted fabrics are an important property and determine the materials consumption during production, productions parameter, and applications of different knitted structures. The sample fabrics have been conditioned for 24 hours at 20±1°C temperature and 65±2% relative humidity. The specimens used for sampling are determined as per the test standards described in the paper for each yarn type, property, and structure. As observed in the result, the properties are related to each other. It is found that the loop length, wpc, cpc, stitch density, tightness factor, loop shape factor and take-up rate of single jersey, 1x1rib, 1x1interlock, single pique, and two-thread fleece knitted fabrics made from 100% cotton and cotton/elastane yarns are significantly influenced by the presence of an elastane yarn. The loop length of single jersey, 1x1rib, and interlock knitted fabrics made from elastane yarns reduced while the single pique and fleece increased. Similarly, other dimensional properties are significantly influenced by the yarn types used during knitting.

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Determination of loop length, tightness factor and porosity of single jersey knitted fabric

Cited by 29 publications

References 11 publications

A New Geometric Model of Laid-in Weft-Knitted Fabrics

A New Geometric Model of Laid-in Weft-Knitted Fabrics

Modeling and realization for appearance visualization of Textronic laces

Dimensional Characteristics of Knitted Fabrics Made from 100% Cotton and Cotton/Elastane Yarns

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