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  • The Mechanism of the Air-Jet Texturing: The Role of ...

    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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  • The Air-Jet Texturing and Twisting Machine's and Model ...

    2009-1-1 · 2. SYSTEM DESCRIPTION Air-jet texturing provides a means of creating texture in yarns. Further, it is a useful means of producing a yarn structure near to that associated with staple yarns. This is an important concession to the tastes of the ultimate consumer. Twisting and air-jet texturing can be combined.

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  • (PDF) Effect of Nozzle Geometry on Air-Jet Texturing ...

    Abstract and Figures. This paper systematically investigates the effect of a number of geometric parameters on the texturing performance of air-jet texturing nozzles. In order to facilitate the ...

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  • Yarn Tension PID Control of Air–Jet Texturing and Twisting ...

    2009-7-7 · the air-jet nozzle by the FC. Texturing Process . The air-jet texturing process forms a yarn with tightly convoluted, entangled and looped filaments resembling yarns spun from staple fibres such as cotton and wool. In this process of air-jet texturing, multi filament yarn is fed into a narrow channel where it meets with a flow of compressed air and

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  • A New Approach to Determination of the Instability of Air ...

    The air-jet texturing process is briefly introduced and its advantages over other texturing processes are summarized. Characteristics of air-jet textured yarns are stated with special reference to ...

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

    2014-7-2 · Loop density of textured yarns. Figure 3 shows that loop density of steam-jet textured yarns increases and air-jet textured yarn decreases when effect-yarn draw ratio is increased. The decrease of loop density in the case of air-jet textured yarns may be due to smaller loops. It suggests that the increase of effect-yarn draw ratio increases the level of texturing and hence …

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  • The mechanisms of high-efficiency grinding for micro/meso ...

    2021-6-24 · A reliable dwell time algorithm is established based on a linear matrix equation for the precise control of the AWJ truing process. A theoretical model is then developed considering grinding wheel surface micro/meso-textures and grain trajectory to reveal the reflection mechanism of the ground marks on the surface of RB-SiC (reaction bonded ...

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  • Laser surface texturing of 316L stainless steel in air and ...

    2016-6-1 · 2.2. Laser treatment. Laser texturing process was conducted with a Q switched Nd:YAG laser system (VM-Tim LS-2135) delivering 1064 and 532 nm wavelengths in TEM00 mode with repetition rate set at 5 Hz.Laser pulse duration was about 12 ns and the beam spot diameter on the target surface was 2.4±0.1 mm (1/e 2 of peak intensity) in ambient air. . Specimens were …

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  • A review of physical experimental research in jet ...

    2019-11-8 · Jet-ECM, also known as electro jet drilling, electro jet machining, electrochemical jet machining is a non-traditional machining technique in which a free jet of electrolyte locally removes material from an electrically conductive workpiece via anodic dissolution. Although Jet-ECM is developed from and shares several similarities with

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  • Application of hydrosilane-free atmospheric pressure ...

    2020-11-1 · Hydrosilane-free sio x films are durably deposited under atmospheric conditions.. The sio x film stands chemical etchants and promotes single-side texturing of si wafers.. The sio x film serves as an electroplating mask for silicon heterojunction solar cells.. The sio x film provides anti-parasitic plating on passivated emitters-rear contact solar cells.

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  • (PDF) Recent advances and challenges of abrasive jet ...

    16 Introduction removal mechanism, the influence of process parameters on surface integrity, texturing capabilities and nozzle wear in In the 1930s, a low-pressure water jet system was patented abrasive air jet machining (AAJM). and successfully used to cut paper [1].

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  • ACS Macro Letters Archives - ACS Axial

    ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements …

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  • A review of physical experimental research in jet ...

    2019-11-8 · Jet-ECM, also known as electro jet drilling, electro jet machining, electrochemical jet machining is a non-traditional machining technique in which a free jet of electrolyte locally removes material from an electrically conductive workpiece via anodic dissolution. Although Jet-ECM is developed from and shares several similarities with

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  • A Short Review on Alternative Cleaning Methods to Remove ...

    2015-12-26 · Denjet has recommended pressure settings according to the industries and type of material to be removed [32].Other than cleaning, applications of high pressure wate rjet includes surface texturing, surface preparation and peening of the metals [33]. Pure water jet by itself has the capability to remove a wide range of contaminations.

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  • The art of laser ablation in aeroengine: The crown jewel ...

    2020-2-25 · However, the formation mechanism of LIPSS has not been fully understood and still under debate until now. Several mechanisms were suggested to explain the formation of LIPSS, including the generalized scattering and interference (Sipe) model, 73,74 73. J. E. Sipe et al., “ Laser-induced periodic surface-structure. 1.

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  • Organometallics Archives - ACS Axial

    Organometallics records progress in one of the most active fields for organometallic, inorganic, organic, catalytic, main group and materials chemists. Articles, communications, mini-reviews, and tutorials detail the synthesis, structure, bonding, chemical reactivity and reaction mechanisms, and applications of organometallic and organometalloidal compounds. Applications coverage …

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  • Precision micro-milling process: state of the art ...

    2020-10-27 · Micro-milling is a precision manufacturing process with broad applications across the biomedical, electronics, aerospace, and aeronautical industries owing to its versatility, capability, economy, and efficiency in a wide range of materials. In particular, the micro-milling …

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  • AWT-800 : Water Jet Looms - Fabric Weaving Machines

    2013-2-13 · Advanced T-Type nozzle jetting water focuses further reducing water consumption. A new concept in weft feeding, meeting accurate length control, synchronisation with looms speed in close loop control, Highly reliable & maintenance free. It's an AALIDHRA product with several picks storage on drum, smooth storage forward on drum & enhancing easy ...

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  • The Proceedings of the 5th Asia-Pacific Drying Conference

    2007-8-15 · Supplementary. This volume consists of the papers presented at the 5th Asia-Pacific Drying Conference, held 13-15 August, 2007 China. The articles feature the most recent progress of drying R&D in the Asia-Pacific region. The proceedings is useful for graduate students, researchers and professionals in the field of drying research and development.

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  • (PDF) An overview of the delamination theory of wear

    c) The basic hypothesis of the delamination theory, i.e., the wear caused by sub-surface deformation and crack nucleation and propagation, is reasonable, since it can account for the energy dissipated. d) At a given value of w, the metal with …

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  • The Proceedings of the 5th Asia-Pacific Drying Conference

    2007-8-15 · Supplementary. This volume consists of the papers presented at the 5th Asia-Pacific Drying Conference, held 13-15 August, 2007 China. The articles feature the most recent progress of drying R&D in the Asia-Pacific region. The proceedings is useful for graduate students, researchers and professionals in the field of drying research and development.

    Get Price
  • Air Texturing Machine - IndiaMART.com

    Machine feature of AX4N. Primary Heater Open Type :Open Type Heater : Plasma Coated High Curvature Track , optimized Track profile insure effective heating, high efficient Heater , Vapour Phase Type, available in 1.6 M and 2 M length in a block …

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  • Publications - Fluid Mechanics

    Lyu, B and Dowling, AP (2017) On the mechanism and reduction of installed jet noise. In: UNSPECIFIED. Lyu, B and Dowling, AP (2017) On the mechanism and reduction of installed jet noise. In: UNSPECIFIED. MacDonald, M and Chung, D and Hutchins, N and Chan, L and Ooi, A and Garciá-Mayoral, R (2017) The minimal-span channel for rough-wall ...

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  • ITMA Asia+CITME – The great parade of textile machinery ...

    2018-10-9 · The performance and stability of the Si is demonstrated while weaving OPW airbags at high speed, with 11520 hooks, on a Dornier Air Jet. The double-sided drive mechanism proves its usefulness. The Bonas Si range is used for all applications on all possible jacquard Air jet…

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  • Publications

    A MVC is a vacuum chamber modified by using a stainless mirror box with perfect reflectability and the infrared lamp connected with the voltage regulator to vary the lamp intensity as it will be illustrated through the paper. Keywords: Heat pipe, thermal …

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  • Method and device for the production of a covered elastic ...

    The air jet in the interlacing jet 2 can be interrupted when the yarn F2 has been joined to the yarn FT and is drawn by the latter towards the jet 19. As soon as the yarn F 2 reaches the second interlacing jet 19 production of the composite yarn FC, by the elastic yarn …

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  • (PDF) An overview of the delamination theory of wear

    c) The basic hypothesis of the delamination theory, i.e., the wear caused by sub-surface deformation and crack nucleation and propagation, is reasonable, since it can account for the energy dissipated. d) At a given value of w, the metal with …

    Get Price
  • BaTiO3-based piezoelectrics: Fundamentals, current status ...

    2017-12-27 · Lead zirconate-titanate [Pb(Zr,Ti)O 3 (PZT)] is the most widely used piezoceramic material for electromechanical device applications. The toxicity and environmental impacts of lead have been known since the ancient times, 1 1. S. J. …

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  • Dobby Rapier Loom

    2013-6-24 · It was built around the reliable as its basis and enhanced with the mos advanced dobby on its class. This enables the dobby rapier loom to produce high quality fabrics with very low defect rate. Due to high availability of the spare parts and high compatibility with other chinese rapier looms, the operating costs of dobby rapier loom can be ...

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  • Materials Research Express, Volume 5, Number 6, June 2018 ...

    Based on this mechanism, the AuAgNCs with high fluorescence was first time used to detect the AChE and AChE inhibitors. Under the optimal conditions, the linear range of this method for AChE was 0.4–25 mU/mL with the detection limit of 0.15 mU/mL, which compare favorably to previously reported methods with more widely linear range or much ...

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  • Plasma hollow cathodes: Journal of Applied Physics: Vol ...

    2021-8-5 · The main reason was that their operation was quite robust, reliable, and fairly easy to test so an extensive model development effort into this highly complex physics problem seemed unwarranted. That changed about two decades ago after NASA completed an ∼30 000-h life test of a 30-cm xenon ion engine. 38 38. A.

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  • ME Seminar - IIT Kanpur

    2015-5-2 · ME Seminars. The Mechanical Engineering seminar series provides an unparalleled opportunity to an individual to increase the depth of his scientific knowledge. The seminars are held every Friday 5 PM, and also offer an ideal platform to …

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  • Transition from superhydrophilic to superhydrophobic of ...

    2018-6-5 · It is well known that in the case of nanosecond laser irradiation of silicon in air, ablation and surface oxidation occurs simultaneously. As a result, silica column-like structures on the initially smooth surface are formed by a non-catalytically vapor–liquid–crystal mechanism [26, 27]. The resulting morphology has extreme hydrophilic ...

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  • Evolution of the Laser-Induced Spallation Technique in ...

    The evolution of laser spallation begins with the generation of shock waves produced by laser vaporization of metal surfaces, which was presented for the first time in 1960 by Askaryon and Morez [].Their study on generation of high-amplitude stress waves in materials by impinging a high energy and pulsed laser beam on an unconfined surface was confirmed by White [], Bell and …

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  • 5 Technology

    2 天前 · The Silent Aircraft Initiative (2006) (SAX-40) was a £2.3 million three-year research project run by Cambridge University and the Massachusetts Institute of Technology—with input from industry and government. SAX-40 culminated in a revolutionary concept design for a very quiet aircraft (see Figures 5-12 and 5-13 ).

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  • A Review of High-Speed Electro-Hydrostatic Actuator Pumps ...

    The third reason for cavitation is the high velocity jet flow formed in the relief groove of the valve plate, as shown in Fig. 3(a). The high velocity jet flow results from the negative pressure gradient when the discharge pressure is initially greater than the cylinder pressure at the start of the discharge stroke [23,29–33]. As a result ...

    Get Price
  • Dobby Rapier Loom

    2013-6-24 · It was built around the reliable as its basis and enhanced with the mos advanced dobby on its class. This enables the dobby rapier loom to produce high quality fabrics with very low defect rate. Due to high availability of the spare parts and high compatibility with other chinese rapier looms, the operating costs of dobby rapier loom can be ...

    Get Price
  • Method and apparatus for implanting an occlusive structure ...

    2006-1-25 · Texturing via stuffer box, air jet and S&Z false twist is well known in the art. Useful parameters are the frequency of the crimp and crimp retention. The ASTM standard on crimp recovery (retention) is D4031, which defines crimp contraction, in this context, as an indicator of crimp capacity or a characterization of a yarn's ability to contract ...

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  • IJEAS

    An existing air-jet texturing machine was modified to supply either air or water to the texturing nozzle. A new texturing-jet was designed and developed to produce spun-like textured yarn using water. The texturing jet was further improved by incorporating capillary effect to suck air with water into the texturing zone to improve turbulence in ...

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  • Materials Research Express, Volume 5, Number 6, June 2018 ...

    Based on this mechanism, the AuAgNCs with high fluorescence was first time used to detect the AChE and AChE inhibitors. Under the optimal conditions, the linear range of this method for AChE was 0.4–25 mU/mL with the detection limit of 0.15 mU/mL, which compare favorably to previously reported methods with more widely linear range or much ...

    Get Price
  • 5 Technology

    2 天前 · The Silent Aircraft Initiative (2006) (SAX-40) was a £2.3 million three-year research project run by Cambridge University and the Massachusetts Institute of Technology—with input from industry and government. SAX-40 culminated in a revolutionary concept design for a very quiet aircraft (see Figures 5-12 and 5-13 ).

    Get Price
  • Plasma hollow cathodes: Journal of Applied Physics: Vol ...

    2021-8-5 · The main reason was that their operation was quite robust, reliable, and fairly easy to test so an extensive model development effort into this highly complex physics problem seemed unwarranted. That changed about two decades ago after NASA completed an ∼30 000-h life test of a 30-cm xenon ion engine. 38 38. A.

    Get Price
  • ARPN :: Journal of Engineering and Applied Sciences (JEAS)

    2016-2-28 · Effect of surface texturing on hydrodynamic performance of journal bearings: Author (s): Shahab Hamdavi, H. H. Ya and TVVLN Rao: Abstract: The request to use hydrodynamic journal bearings in different industries consisting high speed and high load are commonly demanded. The necessary of improving its performance is a significant objective.

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  • Transition from superhydrophilic to superhydrophobic of ...

    2018-6-5 · It is well known that in the case of nanosecond laser irradiation of silicon in air, ablation and surface oxidation occurs simultaneously. As a result, silica column-like structures on the initially smooth surface are formed by a non-catalytically vapor–liquid–crystal mechanism [26, 27]. The resulting morphology has extreme hydrophilic ...

    Get Price
  • A Review of High-Speed Electro-Hydrostatic Actuator Pumps ...

    The third reason for cavitation is the high velocity jet flow formed in the relief groove of the valve plate, as shown in Fig. 3(a). The high velocity jet flow results from the negative pressure gradient when the discharge pressure is initially greater than the cylinder pressure at the start of the discharge stroke [23,29–33]. As a result ...

    Get Price
  • Journal of Micromechanics and Microengineering - IOPscience

    Journal of Micromechanics and Microengineering (JMM) is a leading journal in its field, covering all aspects of nano- and microelectromechanical systems, devices and structures as well as nano/micromechanics, nano/microengineering and nano/microfabrication. Submit an …

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  • A Review of the Capabilities of Current Low-Cost Virtual ...

    Taken together, these analyses show the Leap Motion™ Controller is reliable and accurate for tracking static points, and adequate for gesture-based human–computer interaction . However, Guna et al. also note that there were issues with the stability of the tracking from the device [ 87 ] which can cause frustration or errors from the users.

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