scholarly journals Method of Predicting the Crimp of Jacquard-Woven Fabrics

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5157
Author(s):  
Eglė Kumpikaitė ◽  
Eglė Lapelytė ◽  
Stasė Petraitienė
Keyword(s):  
Woven Fabrics ◽  
Fabric Structures ◽  
Weaving Loom ◽  
Structural Solutions ◽  
Setting Parameters ◽  
Jacquard Weaving

The aim of this study was to investigate the distribution of crimp in new jacquard fabric structures (in which one-layer and two-layer weaves are combined) in the fabric width and to create a method of crimp prediction. It was established that crimp was around 18.80% and changed within the limits of errors, i.e., a range of only ~4%, in the fabric width. It can therefore be said that the warp crimp was constant in the fabric width. Because the warp crimp of jacquard fabric changed insignificantly (within the limits of errors), it can be stated that the fabric-setting parameters and structural solutions were chosen and matched correctly, and such fabric can be woven on any jacquard weaving loom.

scholarly journals Limitations of the CAD-CAM System in the Process of Weaving

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Stana Kovačević ◽  
Snježana Brnada ◽  
Irena Šabarić ◽  
Franka Karin
Keyword(s):  
Woven Fabrics ◽  
Virtual Simulation ◽  
Woven Fabric ◽  
Virtual Image ◽  
Computer Screen ◽  
Cad Cam ◽  
Fabric Structures

AbstractThe weaving process is constantly evolving in terms of productivity, quality, and possibilities of fabrication of different fabric structures and shapes. This article covers some issues that have still not been resolved and represents distracting factors in the woven fabrics production. In the development of woven fabric using the CAD technology, it is inevitably a deviation of the virtual image on the computer screen from the woven sample. According to comprehensive industry analyses, the findings of many authors who contributed to the resolution of these problems can be concluded that these problems are still present in the development and production of striped, checkered, and jacquard woven fabrics. In this article, jacquard, multicolor woven fabrics were investigated, with deviations in pattern sizes and shades of color in warp and weft systems compared to virtual simulation on the computer, as well as the tendency of the weft distortion arising from the weaving process leading to the pattern deformation.

scholarly journals Ultraviolet Protection by Fabric Engineering

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Mukesh Kumar Singh ◽  
Annika Singh
Keyword(s):  
Areal Density ◽  
Woven Fabrics ◽  
Uv Protection ◽  
Comfort Level ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Wear Comfort ◽  
Ultraviolet Protection ◽  
Multifilament Yarns ◽  
Fabric Structures

Background. The increasing emission of greenhouse gases has evoked the human being to save the ozone layer and minimize the risk of ultraviolet radiation (UVR). Various fabric structures have been explored to achieve desired ultraviolet protection factor (UPF) in various situations. Objective. In this study, the effect of various filament configurations like twisted, flat, intermingled, and textured in multifilament yarns on fabric in different combinations is assessed in order to engineer a fabric of better ultraviolet protection factor (UPF). Methods. In order to engineer a fabric having optimum UV protection with sufficient comfort level in multifilament woven fabrics, four different yarn configurations, intermingled, textured, twisted, and flat, were used to develop twelve different fabric samples. The most UV absorbing and most demanding fibre polyethylene terephthalate (PET) was considered in different filament configuration. Results. The combinations of intermingled warp with flat, intermingled, and textured weft provided excellent UVR protection comparatively at about 22.5 mg/cm2 fabric areal density. The presence of twisted yarn reduced the UV protection due to enhanced openness in fabric structure. Conclusion. The appropriate combination of warp and weft threads of different configuration should be selected judiciously in order to extract maximum UV protection and wear comfort attributes in multifilament woven PET fabrics.

Advances in Fabric and Structural Analyses of Pressure Inflated Structures

2003 ◽  
Author(s):  
Claudia J. Quigley ◽  
Paul V. Cavallaro ◽  
Arthur R. Johnson ◽  
Ali M. Sadegh
Keyword(s):  
Strain Energy ◽  
Structural Response ◽  
Beam Theory ◽  
Woven Fabrics ◽  
Material Behavior ◽  
One Dimension ◽  
Energy Potential ◽  
Energy Principle ◽  
Effective Material Properties ◽  
Fabric Structures

Novel methods for analyzing the response of air inflated fabric structures are presented. The first method determines the global structural response of air inflated beam and arch structures. It employs a previously developed specialized finite element. The element was derived by minimizing the strain energy potential for a cylindrical membrane deforming about its pressurized state. Through the use of displacement approximations defining the motion of the beam’s cross section, analogous to classical beam theory, the energy principle is reduced to one dimension. However, the effect of the pressure is included in the formulation. Numerical results compare favorably to experimental data for air beams constructed from Vectran®. The second method is based on the micromechanics of plain-woven fabrics. It employs nonlinear kinematics to predict the load-displacement response of a biaxially loaded fabric. Based on the fabric strip model, this method includes the effects of crimp in nonlinear kinematic material behavior and estimates values of effective material properties in tension and shear.

Geometric Freedom in Bent Yarns and Fabrics

1976 ◽  
Vol 46 (1) ◽  
pp. 44-51 ◽  
Author(s):  
John Skelton ◽  
Meredith M. Schoppee
Keyword(s):  
Free Space ◽  
Radial Growth ◽  
Woven Fabrics ◽  
Yarn Diameter ◽  
Multifilament Yarns ◽  
Fabric Structures

The nature of the change in the geometrical restraints which occurs at the yarn crossover points during fabric bending is found from analysis of a simple waveform model of fabric crimp. This same model is also used to predict radial growth in bent, twisted multifilament yarns. The analysis shows that bending of idealized plain-woven fabrics will always result in increased amplitude of the fabric crimp and, for certain fabrics, a reduction in restraining forces on the crossing yarns. Similarly, bending of twisted multifilament yarns will always result in an increase in yarn diameter in the plane of bending and a decrease in the number of filament-to-filament contacts. Photographs of bent yarn and fabric structures illustrate these effects. The combined influence of both yarn radial growth and increased fabric free space on interyarn constraints is also discussed.

scholarly journals Prediction of woven fabric properties using software protkatex

2013 ◽  
Vol 13 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Brigita Kolčavová Sirková ◽  
Iva Mertová
Keyword(s):  
Structure Prediction ◽  
Woven Fabrics ◽  
Ease Of Use ◽  
Woven Fabric ◽  
Cad System ◽  
Technical Textiles ◽  
Develop Software ◽  
Production Output ◽  
End Use ◽  
Fabric Structures

Abstract Fabric properties and fabric structure prediction are important in each industry domain. Generally all professional CAD packages for woven textiles system will be able to achieve basic fabric simulation and production output. A good CAD system should enable you to create design (dobby and jacquard woven fabric) ideas quickly and easily to enhance the way you work. The differences among competing systems fall mainly into the following categories: ease of use; speed of operation; flexibility of operation; advanced features; technical support; and ongoing software development. Computer simulation or prediction is oriented on standard woven fabrics, technical textiles, and composites. This article focuses on the presentation of software ProTkaTex and its use in the prediction of woven fabric properties. The software implements a generalized description of the internal structure of woven fabric on the unit cell level, integrated with mathematical models of the fabric relaxed state. User can calculate selected mechanical and end-use properties of dobby and jacquard woven fabric as well as can evaluate fabric behavior before real weaving. The major challenge is to develop software that industry will use in design centers for creation and development of new fabric structures for technical as well as clothing application.

The Influence of Fabric Structures of the Woven Fabrics on Electromagnetic Shielding Effectiveness

2011 ◽  
Vol 239-242 ◽  
pp. 1994-1997 ◽  
Author(s):  
Ching Wen Lou ◽  
Yi Chang Yang ◽  
Chin Mei Lin ◽  
Ching Wen Lin ◽  
Lin Chao Chen ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electromagnetic Interference ◽  
Woven Fabrics ◽  
Electromagnetic Shielding ◽  
Shielding Effectiveness ◽  
Frequency Range ◽  
Fabric Structures ◽  
Electromagnetic Shielding Effectiveness

Stainless steel (SS) blended yarns with electromagnetic interference (EMI) were made into woven fabrics, after which the fabrics were evaluated with electromagnetic shielding effectiveness (EMSE). Parameters of laminated angle and the lamination number layers affected the fabrics’ EMSE differently. In addition, density of unidirectional SS yarns affected EMSE in frequency range of 200 to 500 MHz , so as the density of cross SS yarns on a frequency over 1000 MHz.

Formation of Textile Structures for Giant-Area Applications

2002 ◽  
Vol 736 ◽  
Author(s):  
Abdelfattah M. Seyam
Keyword(s):  
Cad Systems ◽  
Level Of Automation ◽  
Technological Advances ◽  
New Development ◽  
Textile Machine ◽  
Fabric Structures ◽  
Formation Systems ◽  
Jacquard Weaving

ABSTRACTRecently, textile machine manufacturers introduced to the market significant technological advances. Examples of such advances are higher speeds, higher level of automation, new concept of jacquard weaving that enables control of individual warp threads, CAD systems, and wider machines than seen before. This paper reviews the new development of formation systems of textile structures with emphasis on technologies that enables the production of giant-area fabrics. The review includes broad range of technologies (weaving, knitting, needlepunching, hydroentanglement, meltblowing, etc.). Additionally, the paper sheds the light on the potential of the textile technologies to manufacture electrotextile fabric structures.

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