Mechanical properties of PVC coated bi-axial warp knitted fabric with and without initial cracks under multi-axial tensile loads

The finite element analysis method (FEM), for its advantages of lower time and economic costing in predicting the mechanical properties of fabrics, was applied to warp-knitted fabrics. In this paper, two bar warp-knitted fabric knitted with wires was used as reflecting mesh antennas. Firstly the loop unit of the metallic warp-knitted fabric was simulated in 3-D by TexGen software. Secondly the 3-D loop unit model was inputted into ABAQUS software to form a model of the metallic warp-knitted fabric sheet for uni-axial tension analysis. Thirdly numerical results were obtained after setting the parameters in ABAQUS. Finally numerical results were verified by uni-axial tensile experiments on the metallic warp-knitted fabric. The results showed that the simulation was in good agreement with the experimental tensile process, where the transfer of yarns between loops when in low fabric elongation and in yarn elongation when in high fabric elongation were simulated by FEM of warp-knitted fabric in the tensile process. Also the same trend of tensile force was found in experiment and FEM results. Therefore it can be concluded that FEM can be used to predict the mechanical properties of warp-knitted fabric with a complex structure.

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Mechanical Properties of Warp-Knitted, Fabric-Reinforced Composites

Journal of Reinforced Plastics and Composites ◽

10.1177/073168449301201006 ◽

1993 ◽

Vol 12 (10) ◽

pp. 1096-1110 ◽

Cited By ~ 21

Author(s):

Wei-Liang Wu ◽

Masaya Kotaki ◽

Akihiro Fujita ◽

Hiroyuki Hamada ◽

Miyako Inoda ◽

...

Keyword(s):

Mechanical Properties ◽

Knitted Fabric ◽

Reinforced Composites ◽

Warp Knitted Fabric

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The Axial Warp-Knitted Fabric and its Reinforced Composite

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.332-334.837 ◽

2011 ◽

Vol 332-334 ◽

pp. 837-840

Author(s):

Yi Hua Bu ◽

Yan Feng ◽

Hua Wu Liu

Keyword(s):

Mechanical Properties ◽

Woven Fabrics ◽

Advanced Materials ◽

Knitted Fabric ◽

Knitted Fabrics ◽

Unique Structure ◽

Reinforced Composite ◽

And Performance ◽

Warp Knitted Fabric ◽

Composite Reinforcement

The structure and performance of the axial warp-knitted composite were introduced, including bi-axial and multi-axial organizations. According to the unique structure of this fabric, the mechanical properties and the advantages as a composite reinforcement were compared with regular staple woven fabrics. The advantages of composites reinforced by bi-axial and multi-axial knitted fabrics were discussed and the applications of such advanced materials were briefly presented.

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Experimental and analytical analyses of the knitted fabric off-axes tensile test

Textile Research Journal ◽

10.1177/0040517520933701 ◽

2020 ◽

Vol 91 (1-2) ◽

pp. 62-72 ◽

Cited By ~ 1

Author(s):

Željko Penava ◽

Diana Šimić Penava ◽

Lozo Miloš

Keyword(s):

Mechanical Properties ◽

Correlation Coefficients ◽

Knitted Fabric ◽

Total Work ◽

Fabric Anisotropy ◽

Knitted Fabrics ◽

Axial Tensile ◽

Tensile Forces ◽

Cotton Yarns

Determination of mechanical properties and predicting the behavior of knitted fabrics during the manufacturing process and finally in the use is an important part of textile science. In this study the influence of knitted fabric anisotropy on the values of maximum force, corresponding extension and total work when axial tensile forces act on specimens cut at different angles with respect to the course direction of the knitted fabric were analyzed. A plain double weft knit fabric made of single cotton yarns was studied. For different angles of cutting samples, the curves of the relation between the values of the tensile forces and the extension at break were experimentally obtained. The mathematical models obtained were compared with the experimental results, and the corresponding correlation coefficients were calculated.

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Study on the NCO index and base knitted fabric substrates on the thermal, chemical, and mechanical properties of solvent-less formulations polyurethane artificial leather

Journal of Engineered Fibers and Fabrics ◽

10.1177/1558925020916458 ◽

2020 ◽

Vol 15 ◽

pp. 155892502091645

Author(s):

Jong Hyun Eun ◽

Joon Seok Lee

Keyword(s):

Mechanical Properties ◽

Functional Groups ◽

Weight Ratio ◽

Chain Extender ◽

Hydroxyl Group ◽

Knitted Fabric ◽

Cross Link ◽

Artificial Leather ◽

Warp Knitted Fabric

In this article, we have studied the thermal, chemical, and mechanical properties of the polyurethane artificial leather. Polyurethane artificial leathers were made from polyol, diisocyanate, chain extender, a catalyst, polyester circular knitted fabric, and warp knitted fabric. After manufacturing the artificial leathers, the properties of six different samples were investigated according to the NCO index. The equivalence ratios of the isocyanates to polyols containing a hydroxyl group are referred to as the NCO index. Samples were synthesized with an NCO index of 1.0, 1.4, and 1.8 by changing the weight ratio of diisocyanate. The result showed that as the NCO index increased, the unreacted NCO functional groups and cross-link increased and the mechanical properties of the polyurethane artificial leather were increased. The mechanical properties of circular knitted fabric polyurethane artificial leather were superior than warp knitted fabric polyurethane artificial leather.

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