Modeling and realization for appearance visualization of Textronic laces

2019 ◽  
Vol 89 (21-22) ◽  
pp. 4526-4536
Author(s):  
Xinxin Li ◽  
Gaoming Jiang ◽  
Aijun Zhang ◽  
Jonathan Y Chen
Keyword(s):  
Facial Feature ◽  
Knitted Fabric ◽  
Geometric Description ◽  
Fabric Structure ◽  
Reflection Model ◽  
Depth Buffer ◽  
Cartesian Coordinate ◽  
Warp Knitted Fabric ◽  
Weight Coefficients ◽  
Computing Approach

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.

Investigation of the Two-Bar Warp-Knitted Fabric Structure Effect on Luster Value

2014 ◽  
Vol 9 (2) ◽  
pp. 155892501400900
Author(s):  
Saeed Ajeli ◽  
Zoleykhah Ahmadvand
Keyword(s):  
Diffuse Reflection ◽  
Specular Reflection ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Fabric Structure ◽  
Measuring Surface ◽  
Before And After ◽  
Dark Color ◽  
Points Of View ◽  
Warp Knitted Fabric

Consumer points of view determine economical value of fabrics. Fabric luster plays a momentous role in attracting people's attention, especially for clothing and domestic purposes. Luster is defined by intensity of both specular and diffuse light reflection off of a surface. There are various methods for measuring surface luster. Gloss. Luster is described as the ratio of specular reflection in one angle to diffuse reflection in another angle. Two-bar warp knitted polyester fabrics such as Tricot, Locknit, Satin, reverse Locknit and Sharkskin in three different densities were provided. A mini gloss apparatus was applied to measure fabric specular reflection in the angle of sixty degrees, before and after disperse dying with different colors of white, blue and yellow. Results suggest that luster is a function of knitted fabric type, color and density. Enhancement of technical back luster resulted from longer underlap of the front bar. However, it did not change the technical face luster significantly. Density increased in all knitted fabrics and caused the luster to decrease. Dark color fabrics showed lower luster compared to light ones.

scholarly journals Bending properties of 2.5 Dimensional Warp Knitted Fabric Reinforced Composites

1992 ◽  
Vol 1 (6) ◽  
pp. 096369359200100 ◽  
Author(s):  
W-L Wu ◽  
M Kotaki ◽  
H Hamada ◽  
M Inoda ◽  
Z Maekawa ◽  
...  
Keyword(s):  
Future Application ◽  
Knitted Fabric ◽  
Reinforced Composites ◽  
Bending Properties ◽  
Transfer Molding ◽  
Reinforced Composite ◽  
Fabric Structure ◽  
Knitted Structure ◽  
Warp Knitted Fabric ◽  
Face Structure

A study of bending properties of 2.5 dimensional warp knitted fabric reinforced composites is presented. Two kinds of 2.5 dimensional knitted fabric structure have been adopted. It is found that the mechanical properties of 2.5 dimensional warp knitted fabric reinforced composite with face structure of back half is superior to that with face structure of single dembigh. The effect of stretching the knitted structure before molding has also been taken into account. Finally, the future application of the 2.5 dimensional warp knitted fabric, e.g., to the resin transfer molding, is suggested.

scholarly journals The Effect of Knitting Parameter and Finishing on Elastic Property of PET/PBT Warp Knitted Fabric

2017 ◽  
Vol 17 (4) ◽  
pp. 350-360 ◽  
Author(s):  
Qing Chen ◽  
Pibo Ma ◽  
Haiwen Mao ◽  
Xuhong Miao ◽  
Gaoming Jiang
Keyword(s):  
Elastic Property ◽  
Elastic Recovery ◽  
Knitted Fabric ◽  
Polybutylene Terephthalate ◽  
Knitted Fabrics ◽  
Heat Setting ◽  
Fabric Structure ◽  
Warp Knitted Fabric ◽  
The Relationship ◽  
Temperature Time

Abstract This study investigated the elastic elongation and elastic recovery of the elastic warp knittedfabric made of PET( polyethylene terephthalate) and PBT(polybutylene terephthalate) filament. Using 50/24F PET and 50D/24F PBT in two threadingbars, the tricot, locknit and satin warp knitted fabrics were produced on the E28 tricot warpknitting machine. The knitting parameters influencing the elastic elongation under 100N wereanalyzed in terms of fabric structure, yarn run-in speed and drawing density set on machine.Besides, dyeing temperature and heat setting temperature/time were also examined in order toretain proper elastic elongation and elastic recovery. The relationship between elastic elongationand knitting parameter and finishing parameter were analyzed. Finally, the elastic recovery ofPET/PBT warp knitted fabric was examined to demonstrate the elastic property of final finishedfabric. This study could help us to further exploit the use of PET/PBT warp knitted fabric in thedevelopment of elastic garment in future.

scholarly journals Moisture Comfort and Antibacterial Properties of Elastic Warp-Knitted Fabrics

2015 ◽  
Vol 15 (1) ◽  
pp. 60-66 ◽  
Author(s):  
Zhi-Cai Yu ◽  
Jian-Fei Zhang ◽  
Ching-Wen Lou ◽  
Hua-Ling He ◽  
An-Pang Chen ◽  
...  
Keyword(s):  
Antibacterial Properties ◽  
Front Face ◽  
Water Evaporation ◽  
Knitted Fabric ◽  
Metal Composite ◽  
Knitted Fabrics ◽  
Blend Ratio ◽  
Fabric Structure ◽  
Back Face ◽  
Warp Knitted Fabric

Abstract Multifunction elastic warp-knitted fabrics were fabricated on a crochet machine with the use of metal composite yarns/viscose yarn and bamboo polyester/ crisscross-section polyester hybrid yarns as the front face and back face of the knitted fabric structure, respectively. We investigated the effect of the blend ratio of bamboo charcoal/ crisscross-section polyester multiply yarns on the fabric's moisture comfort properties, such as water vapour transmission (WVT), water evaporation rate (WER), and water absorbency. The results showed that blending ratio significantly influenced WVT and WER. Moreover, antibacterial activity of the elastic warp- knitted fabric was tested against Staphylococcus aureus and Escherichia coli in accordance with AATCC 90-2011. Finally, the extension- stress value curves were used to analyse the elastic stretching property, and the fabric exhibited greater breaking elongation and lower stress value in the walewise than in the weft direction.

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