PDF The Mechanism of the Air-Jet Texturing The Role of

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  • 31—AN ANALYSIS OF THE AIR-JET YARN-TEXTURING

    Request PDF | The Mechanism of the Air-Jet Texturing: The Role of Wetting, Spin Finish and Friction in Forming and Fixing Loops | A comprehensive review of the roles played by the airflow, wetting ...

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  • ABSTRACT - repository.lib.ncsu.edu

    It is shown that the quantity of water mixing into the air-flow is an insignificant proportion of the total amount of water used in the air-jet texturing process and that this has a negligible effect on the air-flow in the texturing nozzle. It is suggested that only a fraction of this water is needed to impart the desired effects of wetting.

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  • Optimization of process parameters in air-jet texturing of ...

    2016-8-30 · aspects of the air-jet texturing porcess. There have been a number of claims in the literature about various aspects of the process such as the impact of process variables on the strength and structure of the air-jet textured yarn, mechanism of loop formation, role of water in texturing etc.

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  • Optimization of process parameters in air-jet texturing of ...

    2010-9-14 · Air-jet texturing is one of the several processes used to convert synthetic filament yarns to textured yarns and is the most versatile of all known texturing methods. The air-jet texturing process is widely known for its ability to produce continuous filament yarns with spun yarn like appearance. ...

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  • ABSTRACT - repository.lib.ncsu.edu

    2016-8-30 · aspects of the air-jet texturing porcess. There have been a number of claims in the literature about various aspects of the process such as the impact of process variables on the strength and structure of the air-jet textured yarn, mechanism of loop formation, role of water in texturing etc.

    Get Price
  • Investigation of the influence of effect-yarn draw and ...

    2014-7-2 · The mechanism of the air-jet texturing: the role of wetting, spin finish and friction in forming and fixing loops. Textile Research Journal, 76(2), 116–125. CAS Article Google Scholar Bilgin, S, Versteeg, HK, & Acar, M. (1996). Effect of nozzle geometry on air-jet texturing performance.

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  • Role of Water in Air-Jet Texturing: Part I: Polyester ...

    2018-2-15 · Polyester multifilament yams with different frictional characteristics have been air textured under both dry and wet texturing conditions. Wet textured yams are more stable and have higher bulk, and the surface structure of these yarns shows higher loop frequency, lower loop height, and a higher percentage of protrudes and closed and crossed loops for feeder yams with similar frictional ...

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  • Role of Water in Air-Jet Texturing: Part II: Nylon 6 Yarns ...

    2018-2-14 · Nylon yarns conditioned in different relative humidities were textured in both dry and wet modes, and the effect of these factors on the structure and properties of air textured yarns was investiga...

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  • Mechanism of Nep Formation in Air-Jet Texturing - A.K ...

    1995-5-1 · , A Study of Blend Inhomogeneity in Air-jet Textured Yarns, in ' Second International Conference on Air-jet Texturing & Mingling/Interlacing,' Loughborough University of Technology, Loughborough, U.K., 1989, pp. 185-202.

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  • Effect of Air-jet Texturing Conditions on the Physical ...

    Physical properties of the composite yarn using low-melting(LM) polyester/Tencel were investigated with air-jet texturing conditions such as temperature, take-up overfeed, yarn speed and air pressure. Surface morphology, microstructure, tensile property, glossiness were evaluated. Surface morphology of a composite yarn had more damaged and loosened structure according to increase of take-up ...

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  • The Role of Laser Texturing in Improving the Adhesion of ...

    2019-10-2 · Plasma sprayed W-based coatings have the potential application as joining interlayers for the plasma-facing components of future fusion reactors. Particularly in the form of tungsten-steel functionally graded materials (FGMs), they would reduce the stress concentration between the W-based plasma-facing armor and steel-based construction. For mechanical integrity, good adhesion is essential ...

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  • Numerical and experimental study of the influence of ...

    2018-12-1 · Followed by design and construction of a mechanism for producing jet ring and modified jet ring yarns. Finally, an experimental study on the effects of some nozzles and air flow parameters on jet ring and modified jet ring yarn properties is presented intending to illustrate the role of inserting the air jet nozzle for improving these systems.

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  • Investigation of Fibers Damages during Air Jet Processing ...

    2015-4-3 · Air jet textured yarns from polyester multi filaments are widely used in different field such as carpet industry recently. One of the most important matters in usage is durability and stability. Therefore, investigation the effect of air jet variables on filaments damages is very important in texturing process whereas the control of these effective parameters guarantees durability of yarn in ...

    Get Price
  • Silk Fibroin Nano-Coated Textured Silk Yarn by ...

    Air -jet texturing process is an attractive metho d to produce spun yarn like appearance permanently by modifying the uniform arrangement of the continuous multi -filament yarns. The basis of this method is that yarn is overfed into the compressed air -jet stream, so that loops are forced 36 Nano Hybrids Vol. 7

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  • Mechanism of air entrainment by a disturbed liquid jet ...

    2012-5-17 · 9 August 2018 | AIAA Journal, Vol. 56, No. 9. Temporal analysis of breakup for a power law liquid jet in a swirling gas. 28 November 2017 | Meccanica, Vol. 53, No. 8. Instability of gas-surrounded Rayleigh viscous jets: Weakly nonlinear analysis and numerical simulation. Physics …

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  • Mechanisms of the breakup of liquid jets | AIAA Journal

    2008-4-18 · We report an ultrafast synchrotron x-ray phase-contrast imaging study of the primary breakup mechanism of a coaxial air-assisted water jet. There exist great similarities between the primary (jet) and the secondary (drop) breakup, and in the primary breakup on different length scales. A transition from a ligament- to a membrane-mediated breakup is identified around an effective Weber number ...

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  • Similarity between the Primary and Secondary Air-Assisted ...

    2018-3-30 · It has been known for many years that during filamentation of femtosecond light pulses in air, gain is observed on the B to X transition in N 2 +.While the gain mechanism remains unclear, it has been proposed that recollision, a process that is fundamental to much of strong field science, is critical for establishing gain.

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  • Edmir Silva | North Carolina State University -

    Researchs has been conducted in the past on various aspects of the air-jet texturing porcess. There have been a number of claims in the literature about various aspects of the process such as the impact of process variables on the strength and structure of the air-jet textured yarn, mechanism of loop formation, role of water in texturing etc.

    Get Price
  • Silk Fibroin Nano-Coated Textured Silk Yarn by ...

    Air -jet texturing process is an attractive metho d to produce spun yarn like appearance permanently by modifying the uniform arrangement of the continuous multi -filament yarns. The basis of this method is that yarn is overfed into the compressed air -jet stream, so that loops are forced 36 Nano Hybrids Vol. 7

    Get Price
  • Investigation of Fibers Damages during Air Jet

    2015-4-3 · Air jet textured yarns from polyester multi filaments are widely used in different field such as carpet industry recently. One of the most important matters in usage is durability and stability. Therefore, investigation the effect of air jet variables on filaments damages is very important in texturing process whereas the control of these effective parameters guarantees durability of yarn in ...

    Get Price
  • Drawing, Texturing, Intermingling and Heat setting

    1993-9-1 · An investigation of the noise generation mechanism of turbulent structures in a subsonic air jet has been done theoretically as well as experimentally. Based on the results obtained, it is proposed that the rate of change of velocities of the jet structures plays an important role in the generation of sound in an air jet.

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  • A Study on the Noise Generation Mechanism in a

    PDF Abstract. Evidence is presented which illustrates the role of jet stream-frontal zone clear air turbulence (CAT) as a mechanism for the exchange of air and chemical trace constituents between the stratosphere and the troposphere. Three-dimensional air motion sensing instrumentation and fast-response ozone and condensation nuclei analysers ...

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  • Turbulent Mixing within Tropopause Folds as a

    A similar mechanism probably occurs in the larynx during activities such as talking and coughing, which involve the opening and closing of the vocal folds (Mittal, Erath & Plesniak2013). Finally, movement and contact of the tongue and lips, particularly during violent events such as sneezing, generate salivary droplets via this mechanism.

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  • The ˛ow physics of COVID-19 - cambridge.org

    2016-1-22 · 4 where αi is the A-factor in the Arrhenius expression for the forward rate constant, k T E f RT = A − αβexp( ), and X k is the mole fraction of the k-th species. A skeletal mechanism consists of only those reaction steps having sensitivity coefficients greater than a …

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  • Development of Reduced Mechanisms for Numerical

    2019-8-7 · In comparison to dry air machining, tool wear had improved in MQL-assisted machining. The evaluation was done by the tool wear mechanism and coolant precipitation on the flank face of the insert in relation to the heat generation. Approximately 20–30% lower flank wear was observed for cutting under the dry condition at higher cutting speeds.

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  • Influence of dry and solid lubricant-assisted MQL

    2010-8-1 · Abstract. The summertime Great Plains low-level jet (LLJ) has been the subject of numerous investigations during the past several decades. Characteristics of the LLJ include nighttime development of a pronounced wind maximum of typically 15–20 m s −1 at levels 300–800 m above the surface and a clockwise rotation of the wind maximum during the course of the night.

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