Prediction and Correlation of Air Permeability and Light Transmission Properties of Woven Cotton Fabrics

Nazir, Ahsan; Hussain, Tanveer; Afzal, Ali; Faheem, Sajid; Ibrahim, Waseem; Bilal, Muhammad

doi:10.1515/aut-2015-0053

Cited by 11 publications

(9 citation statements)

References 13 publications

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“…To further elaborate the lower threshold frequency for fabric A2, the optical porosity values of the fabrics are compared and are displayed in Figure 8. Transmission of light through the fabric is an established phenomenon to measure the porosity of fabrics and is known to have strong correlations with the air permeability values [30] (both being the measures to calculate porosity). The average porosity values are 2.9% + 0.48, 2.8% + 0.52 and 2.9% + 0.4 for fabrics FA3, FB3 and FC3, respectively, whereas, the porosity values for the proposed copper covering alignment fabrics are 7.2% + 0.26, 3.2% + 0.38 and 2.9% + 0.59 for FA2, FB2 and FC2, respectively.…”

Section: Resultsmentioning

confidence: 99%

An alternative approach to design conductive hybrid cover yarns for efficient electromagnetic shielding fabrics

Asghar

Ahmad

Yahya

et al. 2017

Journal of Industrial Textiles

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E-Textiles have gained enormous attention due to their specific characteristics in various non-conventional applications such as electromagnetic shielding materials. With the advent of various high frequency-driven devices, the need to restrict the non-ionizing radiations from their undesired effects became imperative. Due to the ease of production, better electrical conductivity and durability, the conductive hybrid cover yarns with continuous metallic filaments have earned its place as the most convenient form of yarns to develop E-textiles. However, controlling the amount of conducting material in yarns poses a challenge as the increase in size of the metallic filaments are associated with reduced electromagnetic shielding effectiveness due to increased stiffness of yarns, which resists in proper interlacement and hence causes openness in fabrics. The proposed design of conductive hybrid cover yarns is proven to have better tensile properties and modulus, therefore this design is more suitable to produced fabrics with higher cover factors. The amount of conducting material in the proposed design increased significantly without changing the size of the continuous filaments. Moreover, 99.9% shielding effectiveness is achieved with this increased metal content in fabrics in S-band and partly C-band microwave frequencies.

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Section: Resultsmentioning

confidence: 99%

An alternative approach to design conductive hybrid cover yarns for efficient electromagnetic shielding fabrics

Asghar

Ahmad

Yahya

et al. 2017

Journal of Industrial Textiles

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“…Indirectly from the measurements of reflection or other permeability properties from the referential samples [15][16][17].…”

Section: Discussionmentioning

confidence: 99%

A New Simplified Model for Predicting the UV-Protective Properties of Monofilament PET Fabrics

Kostajnšek

Urbas

Dimitrovski

2019

Autex Research Journal

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Knowing the reflection, transmission, and absorption properties of the yarns from which the woven fabric is made, prediction of a fabric’s UV-protective properties is simple. Using the geometrical properties of monofilament yarns and fabrics, which were determined optically, and following the cover factor theory, we have determined the areas of fabrics covered with no yarns, only one yarn, and two yarns. From a special selected set of high-module polyethylene terephthalate (PET) monofilament materials (e.g., fabrics), we have elaborated a method for determining the reflection, transmission, and absorption of yarns. By first defining the differently covered areas of fabrics, we were able to use them in a mathematical model for calculating and predicting the UV-protective properties of the fabrics. The calculated and measured values of the UV-protective properties of the selected test fabrics were highly correlated, with a correlation coefficient >0.98.

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“…Similarly Cardamone et al employed digital image analysis technique to analyze fabric structural parameters [8] and Militky et al reported that image analysis could be used for determination of air permeability of various weave structures and fiber types [9]. Whereas Nazir et al developed a statistical model for predicting the air permeability and light transmission properties of woven cotton fabrics and determined the level of correlation between the two parameters [10]. Literature shows that there is a need to understand the effect of yarn structure (produced by different spinning systems)upon cover factor of woven fabrics.…”

Section: Introductionmentioning

confidence: 99%

Effect of yarn structure on cover factor in woven fabrics

et al. 2018

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This experimental work investigates the effect of yarn structure on cover factor of fabrics at different weft settings by the light transmission method. To analyze the effect, two different types of fabric set have been prepared by using airjet and rotor yarns of the same linear densities in the weft direction and keeping the warp yarn unchanged. For each fabric, weft setting has been changed gradually. Cross-sectional diameter of yarn and its packing density has been analyzed to find out the differences between both yarn structures. The effective yarn diameter and packing density have been found to be almost same for both yarns while the hairiness is found to be higher in airjet yarn as compared to rotor yarn. Yarn cross-section in the fabric has also been analyzed to examine the deformation (flatness) in yarn, which was relatively higher in airjet yarns. At the same weft setting the cover factor (CF) of fabric woven by air jet yarn is found to be higher than fabric woven by rotor jet yarn, and this difference decreases as the weft setting increases in fabric. Correlation analysis results show the relation between the cover factor and weft setting. While analysis of variance results show statistically significant effect of spinning system (airjet and rotor yarn) and weft setting on the cover factor of woven fabric.

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Prediction and Correlation of Air Permeability and Light Transmission Properties of Woven Cotton Fabrics

Cited by 11 publications

References 13 publications

An alternative approach to design conductive hybrid cover yarns for efficient electromagnetic shielding fabrics

An alternative approach to design conductive hybrid cover yarns for efficient electromagnetic shielding fabrics

A New Simplified Model for Predicting the UV-Protective Properties of Monofilament PET Fabrics

Effect of yarn structure on cover factor in woven fabrics

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