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 ◽  
...  

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.

1992 ◽  
Vol 1 (5) ◽  
pp. 096369359200100 ◽  
Author(s):  
W-L Wu ◽  
M Kotaki ◽  
A Fujita ◽  
H Hamada ◽  
M Inoda ◽  
...  

This paper dealt with the bending properties of warp knitted fabric reinforced composites. With the increasing of course density and the variation of knitted structure, the bending strength and modulus increased in course direction and kept invariable in wale direction. Furthermore, the specimen setting back side of knitted fabric at tensile side exhibited superior bending strength in course direction.


1995 ◽  
Vol 4 (3) ◽  
pp. 096369359500400 ◽  
Author(s):  
Hiroyuki Hamada ◽  
Asami Nakai ◽  
Akihiro Fujita ◽  
Miyako Inoda

In this paper, welt knitted fabric reinforced composites were fabricated and its tensile properties were measured. Changing knitted structure from plain knit to welt knit caused changing mechanical properties, particularly isotropic tensile strength could be obtained. The fracture mode of welt knitted fabric reinforced composite was similar that of plain knitted fabric reinforced composite.


1993 ◽  
Vol 12 (10) ◽  
pp. 1096-1110 ◽  
Author(s):  
Wei-Liang Wu ◽  
Masaya Kotaki ◽  
Akihiro Fujita ◽  
Hiroyuki Hamada ◽  
Miyako Inoda ◽  
...  

2014 ◽  
Vol 9 (2) ◽  
pp. 155892501400900
Author(s):  
Saeed Ajeli ◽  
Zoleykhah Ahmadvand

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.


2015 ◽  
Vol 813 ◽  
pp. 140-146
Author(s):  
Ning Ning Wang ◽  
Jia Ying Sun ◽  
Cheng Yan Zhu

In order to study on mechanical performance as the target of environmental corrosion resistance property, three kinds of glass fiber fabrics like biaxial warp knitted fabric, biaxial stitch-bonded felt and three axial warp knitted fabric were used to prepare textile reinforced composites in five layers laminated structure, which were soaked in seawater environment for 180 days. The result showed that, the surface appearance of textile reinforced composite became muddy and the color became darker, the tensile strength and bending strength of composites decline of the whole with the extension of soak time, the average loss rate of tensile and bending performance are respectively 24.8% and 56.5%, all of these provide the theoretical basis for researching and developing high-quality composite materials.


2011 ◽  
Vol 332-334 ◽  
pp. 837-840
Author(s):  
Yi Hua Bu ◽  
Yan Feng ◽  
Hua Wu Liu

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.


2012 ◽  
Vol 535-537 ◽  
pp. 223-226 ◽  
Author(s):  
Xiao Hong Ma ◽  
Zhi Gang Qin

Four kinds of single-bar modified tricot fabrics are knitted on a Raschel latch needle warp knitting machine with glass continuous-filament yarns. The glass warp knitted fabric/ unsaturated polyester resin composites are produced by manual molding technology. The tensile properties of composite samples are tested on the universal material testing machine. The stress-strain curves, elastic modulus, fracture strengths of composites are analyzed in the course, wale and diagonal directions. The results show that the tensile stress/strain curves of single-bar modified tricot warp knitted fabric reinforced composites were nonlinear. The tensile properties of composites possess obvious anisotropic characteristics. The values of elastic modulus and tensile strength were in relation to the yarn numbers bearing tensile load in tensile directions


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