A Study of Air-Jet Texturing Nozzles The Effects of NozzleReasonable design

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  • A Study of Air-Jet Texturing Nozzles: The Effects of ...

    A thorough investigation of the existing texturing nozzles will, no doubt, lead to the design of improved nozzles. This paper reports the experimental research carried on the scaled-up versions of the T100 HemaJet with varying geometrical configurations, being the exit shape, situation, and inclination of the inlet holes, and the ratio of the incoming holes area to the nozzle’s main duct area.

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  • Effect of Nozzle Geometry on Air-Jet Texturing Performance

    study, we investigate a series of systematically designed experimental rectangular texturing nozzles and establish the influence of nozzle shape on texturing performance. Rectangular Nozzle Design Some of the most widely used air-jet texturing nozzles in industry are of the

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

    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 research, an air-jet ...

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  • Air-jet yarn texturing and its nozzles - Textile Today

    Early texturing nozzle had an axial yarn feed while the compressed air was admitted to the nozzle body through a side entry. It also had an impact element of a flat plate type. Nevertheless, the lack of aerodynamic design of the inner configuration caused tremendous losses to the air flow resulting in inefficient texturing.

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  • Effect of nozzle size on texturing performance: comparison ...

    Using four texturing nozzles, both air-jet and steam-jet textured yarns were manufactured. The effect of nozzle size on process and yarn parameters has been studied and compared with air-jet ...

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  • Effects of geometry on the flow characteristics and ...

    Air-jet texturing is a versatile process for producing a range of synthetic yarns with a spun-like appearance, which are widely used for apparel and furnishing fabrics and industrial textiles.There is no universal nozzle capable of processing any supply yam of any linear density.The role played by nozzle geometry is still not fully understood.The experimental study presented here seeks to ...

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

    air jet nozzles, and study the effects of some jet nozzle struc-tural parameters on the swirling flow generated inside the noz-zle. Second, design and construct a mechanism for producing jet ring and modified jet ring yarns. Third, experimental study of the effect of some nozzles and yarn parameters on jet ring

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  • Effect of air-jet texturing on adhesion behaviour of ...

    Since air-jet texturing is a fully mechanical process no change of the type of the bonds between rubber and yarn is expected. Therefore, the improvement of the adhesion has been attributed to two reasons below: 1. Changes on the fiber surface due to air-jet texturing. 2. Changes of the yarn geometry due to air-jet texturing.

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  • (PDF) Airjet texturing

    Details of the design are given in Bilgin et al. [20] in fluid behavior inside the jet, based on the assumption where it was shown that such rectangular nozzles perform that condensation shock plays a role in texturing, a claim as well as the industrial texturing nozzles …

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  • The Fundamentals of Air-Jet Texturing - 1library.net

    The most widely quoted general description of the process is from Acar [16]. It has been reproduced below. “ When the overfed filaments enter the texturing nozzle, they are carried

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  • ABSTRACT - repository.lib.ncsu.edu

    structure of the air-jet textured yarn, mechanism of loop formation, role of water in texturing etc. This current research is aimed to study one such aspect namely the effect of process variables and nozzle design on the tensile properties of the air-jet textured yarns.

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  • (PDF) Airjet texturing

    Details of the design are given in Bilgin et al. [20] in fluid behavior inside the jet, based on the assumption where it was shown that such rectangular nozzles perform that condensation shock plays a role in texturing, a claim as well as the industrial texturing nozzles …

    Get Price
  • ABSTRACT - NCSU

    Dani, Nikhil Prakash. The fundamentals of air-jet texturing. (Under the direction of Dr. William Oxenham and Dr. Behnam Pourdeyhimi) Air-jet texturing is a well-established filament yarn processing technology that has been around for more than half a century. There is much debate about various aspects of the

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

    air jet nozzles, and study the effects of some jet nozzle struc-tural parameters on the swirling flow generated inside the noz-zle. Second, design and construct a mechanism for producing jet ring and modified jet ring yarns. Third, experimental study of the effect of some nozzles and yarn parameters on jet ring

    Get Price
  • (PDF) Impact of Process Parameters and Nozzle Design on ...

    Figure 1 . 1 :11Process Flow of Air-Jet Texturing (fundamentals of air-jet texturing- Figure 2 . 121Taslan IX jet nozzle with axial air flow[17] Dissatisfied with the poor performance of the Taslan IX nozzle, Du Pont decided to develop a new design with improved aerodynamics of the nozzle's inner surfaces.

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  • Air Flow in Yarn Texturing Nozzles

    The air-jet texturing process, a purely mechanical means of texturing continuous filament yarns, is described. Industrial texturing nozzles are reviewed and categorized in two groups, either as converging-diverging or cylindrical type nozzles.

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  • Effect of air-jet texturing on adhesion behaviour of ...

    Since air-jet texturing is a fully mechanical process no change of the type of the bonds between rubber and yarn is expected. Therefore, the improvement of the adhesion has been attributed to two reasons below: 1. Changes on the fiber surface due to air-jet texturing. 2. Changes of the yarn geometry due to air-jet texturing.

    Get Price
  • Air-jet texturing of twisted filament yarns using new jets ...

    Air-jet texturing is a pneumo-mechanical bulking different jets. Attempts to bulk spun yarns in air-jet process in which a bundle of multifilament yarn is texturing by the present authors revealed that the new overfed into a nozzle and subjected to an air stream, jets have an untwisting action on the yarn II -13 and

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  • Supersonic jet texturing of yarns (76th Thomas Hawksley ...

    machines, air-jet spinning, fluid-jet weaving, weft knit- ting, multi-filament mingling (interlacing), yarn splicing, fabric dyeing and finishing machines, and the air-jet tex- turing of filament yarns. The air-jet texturing process, which has evolved over the past 30 years, is a purely mechanical yarn texturing

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  • Study of micro-dimples fabricated on alumina-based ...

    This paper presents an experimental study on the micro-texturing of alumina and ZTA using micro-abrasive jet machining. Diverse types of dimples with different sizes (depth and diameter) and geometries (bottom profiles and taper angle) were produced using various processing parameters, including air pressure, abrasive flow rate, nozzle stand ...

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  • ABSTRACT - repository.lib.ncsu.edu

    structure of the air-jet textured yarn, mechanism of loop formation, role of water in texturing etc. This current research is aimed to study one such aspect namely the effect of process variables and nozzle design on the tensile properties of the air-jet textured yarns.

    Get Price
  • ABSTRACT - NCSU

    Dani, Nikhil Prakash. The fundamentals of air-jet texturing. (Under the direction of Dr. William Oxenham and Dr. Behnam Pourdeyhimi) Air-jet texturing is a well-established filament yarn processing technology that has been around for more than half a century. There is much debate about various aspects of the

    Get Price
  • Loughborough University Research Publications

    versteeg, hk, bilgin, s, acar, m (1994) effects of geometry on the flow characteristics and texturing performance of air-jet texturing nozzles, textile research journal, 64(4), pp.240-246, issn: 0040-5175. doi: 10.1177/004051759406400409.

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  • Blend irregularity of air-jet textured yarns

    jet was used. 2.3 Nozzles Two cylindrical and two converging-diverging nozzles were chosen for parallel feed air-jet texturing. Table 3 provides data on nozzle parameters. The di fference between HemaJet with T I 00 core and T31 0 core I ies in that the T 100 core has one air hole while the T31 0 core has three air holes. The combined

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

    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 make smaller loops.

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  • Supersonic jet texturing of yarns (76th Thomas Hawksley ...

    machines, air-jet spinning, fluid-jet weaving, weft knit- ting, multi-filament mingling (interlacing), yarn splicing, fabric dyeing and finishing machines, and the air-jet tex- turing of filament yarns. The air-jet texturing process, which has evolved over the past 30 years, is a purely mechanical yarn texturing

    Get Price
  • Department of Textile Technology IIT Delhi

    Effect of linear density of feed yarn filaments and air jet texturing process variables on compressional properties of woven fabrics, Indian J. Fibre & Textile Res., 41(1) 47-54. S. Renuka, Dipayan Das & R. S. Rengasamy (2016) Studies on needle-punched natural and polypropylene fiber nonwovens as oil sorbents.

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  • Simulation of Airflow Motion in Jet Nozzle with Different ...

    Jet nozzle with tangentially injected airflow has been applying into spinning technology due to the tangential force produced by swirling airflow. In order to understand the airflow motion trajectory in jet nozzle, modify the nozzle structure and dimension, FLUENT software program is used. Some parameters which are closely related the airflow motion profiles are studied, such as the diameter ...

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

    a comparative study between the dynamic friction characteristics of compact and siro yarns Investigation of the influence of effect-yarn draw and effect-yarn overfeed on texturing performance: comparison between air-jet and steam-jet textured yarn

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  • Accuracy of the pattern transfer from the metal mask to ...

    Multiphase jet machining (MJM) is a recently developed surface texturing method based on which a mixture of abrasives and water is accelerated by compressed air to remove material from substrates. Considering the high divergence of the jet, masks are needed for MJM to obtain the desired features and dimensions. To investigate the pattern transfer accuracy, masks were prepared from a 304 ...

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  • American Journal of Engineering Research (AJER) 2013

    Keywords: -sea sand, Vibrating chamber, Abrasive jet machine , abrasives, Nozzles, glass, I. INTRODUCTION Sand Abrasive compressed air is used for surface cutting, holing of surface on the brittle material like glass, this also used for surface cleaning and surface texturing etc. In AJM process fine particles of sea sand

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  • Short Communications - NISCAIR

    the energy lost in air-jet loom in the case of using a defective sub-nozzle. Hence, in this study, a new apparatus has been designed to measure the sub-nozzle efficiency during the processing in the air-jet loom. Design of Sub-nozzle Groups of sub-nozzles are located across the whole width. Each group jets compressed air in a specific

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  • A text book of fibre science and technology by S P Mishra ...

    Interdependence of fibre type and the design of the nozzle of air-jet spinning machine. Basu, A ... Simulation analysis of weft yarn motion in single nozzle air-jet loom to study the effective parameters. Nosraty, H ... Effect of linear density of feed yarn filaments and air-jet texturing process variables on compressional properties of woven ...

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  • Asian Economic and Social Society

    6.5. Design of Sub or Relay Nozzle. Arrangement and design of sub or relay nozzle has a great effect on the weft insertion at low pressure. Sub or relay nozzles are arranged in groups of 4 or 5 nozzles and an electro-magnetic valve is attached to each group and the sub-nozzles of the same group jet simultaneously.

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  • Tekstil Makinaları ve Malzemeleri Araştırma Geliştirme ...

    A. DEMİR, 'Simplified Instability Measurement Devices for Air-jet Textured Yarns', Textile Research Journal, (Communication to the Editor), August 1989, Vol. 59, No:8, 492-494. A. DEMİR, 'A Study of Air-jet Texturing Nozzles: The Effects of Nozzle Configuration on the Air Flow', Transactions of ASME: Journal of Engineering for Industry, February 1990, Vol. 112, 97-104.

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  • Reducing environmental impact in air jet weaving ...

    As example, air-jet weaving is the most productive but also most energy consuming weaving method (Schröter and Holtermann, 2014). Air-jet weaving is a type of technology in which the warp is inserted into the warp shed with compressed air by different nozzles types. In Figure 1 a schematic view of the weft insertion components is shown.

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  • Texturing of Glass Surface using Micro-slurry Jet ...

    1 Introduction. Surface design is a key factor in the functional performance of materials and devices. Typical examples are the high adherence of the surface of geckos' hands (Christensen-Dalsgaard et al., 2011), the inhibition of light reflection from the eyes of moths (Ko et al., 2011), and the Lotus effect due to the superhydrophobicity and self-cleaning property of the lotus leaves ...

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  • WO1997030200A1 - Method of aerodynamical texturing ...

    To increase the intensity of the texturing, the invention proposes to maintain airflow above Mach 2 by using a nozzle duct of a certain form. The total opening angle of the nozzle duct directly upstream of the texturing zones is larger than the ideal Laval angle and has an effective length which is preferably a multiple of the narrowest diameter of the nozzle.

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  • Texile Resource: A numerical analysis of transonic ...

    Reduced air-jet diffusion and effective control of flow direction and velocity are therefore very important in air-jet loom design. Due to the recent development of high speed air-jet looms, studies of transonic/supersonic flows in main nozzles have become important for performance enhancement of air jets and optimum nozzle design.

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  • (TT305) ADVCNED YARN MANUFACUTRING

    Air texturing – air nozzles Laminar vs Turbulent flow – Properties and applications of air textured yarns. Texturamat and dynafil – M.Thermal stress tester – quality control in texturising – textured yarn defects – texturing problems. TEXT BOOKS: 1. C.W.Lawrence, “Technology of Yarn Production”, Wood Head Publishers, London ...

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  • ATY

    Air-jet texturing is one of the most versatile methods known to convert flat synthetic filament yarns to textured yarns. This research provides a parametrical analysis of the effect of a single process parameter on the tenacity, modulus and elongation of the yarn.

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  • Ruslan Melentiev

    The study highlights the effects of nozzle diameter and length, air pressure, particle size and density on particle velocity development through the jet field. Finally, practical recommendations and multiple regression models of maximum particle velocity, location from the nozzle exit and simplex velocity profile approximation are offered for ...

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  • ENERGY BASED EVALUATION OF WATERJET PEENING FOR INDUSTRIAL ...

    The intent of this study was not to perform a complete Analysis of Variance (ANOVA), however the cumulative effects (Pareto) can provide further insight into the dominant process parameters. In this study the energy density was controlled by only the pressure and traverse rate. The standoff distance and air flow rate influenced the jet structure.

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  • MEMS-BASED THERMAL MANAGEMENT OF HIGH HEAT FLUX DEVICES ...

    Maddox and Bar-Cohen [23] conducted a study on the design of a submerged jet impingement cooling system. They conclude that the Martin correlation [24] for submerged jet impingement is the most appropriate for electronic cooling design calculations. Other important results indicate that Nu increases with increasing Re and Pr.

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  • Air Jet Dty PDF

    air jet dty.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

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

    Nozzles used were of single hose and two hose type. In single hose type, dry ice and compressed air is mixed in the feeder and then supplied to the nozzle whereas for the two hose type, compressed air and dry ice are supplied through a separate hose and mixed within the mixing tube in the nozzle before acceleration [39].

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  • Fabrication of optimized streamlined micro nozzles by ...

    The design method of the streamlined nozzle is qualitatively given, but it is still necessary to quantitatively analyze the nozzles in a specific scale to achieve better performance. The distribution of the straight line section and parabolic section is optimized by simulation analysis (COMSOL Multiphysics ® 5.3a, COMSOL Inc., Sweden).

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  • A Sustainable Challenges of Abrasive Jet Machining (AJM ...

    Abrasive jet micromachining (AJM) is a promising non-traditional machining technology for the cost effective fabrication of micro-structures on brittle and hard materials. The AJM process is based on the erosion of substrate by an abrasive-laden air jet or abrasive air jet (AAJ).

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  • (TT305) ADVCNED YARN MANUFACUTRING

    Air texturing – air nozzles Laminar vs Turbulent flow – Properties and applications of air textured yarns. Texturamat and dynafil – M.Thermal stress tester – quality control in texturising – textured yarn defects – texturing problems. TEXT BOOKS: 1. C.W.Lawrence, “Technology of Yarn Production”, Wood Head Publishers, London ...

    Get Price
  • Publications - Fluid Mechanics

    Lyu, B and Dowling, AP (2019) An experimental study of the effects of lobed nozzles on installed jet noise. Experiments in Fluids, 60. ISSN 0723-4864. Ma, Y and Cui, J and Vadlamani, NR and Tucker, P (2019) Hierarchical geometry modelling using the immersed boundary method. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 355. pp. 323-348 ...

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

    Following a systematic design process, we use different criteria to evaluate the effects of design solutions on packaging, since waste can be seen just as one of the main phases of packaging life. To this purpose, we adopt the stages of the waste hierarchy set by the EU Waste Framework Directive 2008/98/EC as design evaluation criteria.

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  • TEKSTİL VE MÜHENDİS (Journal of Textiles and Engineer ...

    Alagirusamy et al. (2005) reported a study on effect of jet design to the intermingling and also described im-provements of commingling nozzle design in the com-mingling process. This study found that knot frequency and interlacing degree of composite commingled yarns depend on the nozzle design. Air inlet number and inlet

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  • Air Jet Dty PDF

    air jet dty.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

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  • Fabrication of optimized streamlined micro nozzles by ...

    Colucci D W and Viskanta R 1996 Effect of nozzle geometry on local convective heat transfer to a confined impinging air jet Exp. Therm. Fluid Sci. 13 71–80 Crossref Google Scholar [7]

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  • Fabrication of optimized streamlined micro nozzles by ...

    The design method of the streamlined nozzle is qualitatively given, but it is still necessary to quantitatively analyze the nozzles in a specific scale to achieve better performance. The distribution of the straight line section and parabolic section is optimized by simulation analysis (COMSOL Multiphysics ® 5.3a, COMSOL Inc., Sweden).

    Get Price
  • Journal of Mechanical Science and Technology - Academic ...

    The ISSN (Online) of Journal of Mechanical Science and Technology is 1976-3824 . An ISSN is an 8-digit code used to identify newspapers, journals, magazines and periodicals of all kinds and on all media–print and electronic. Journal of Mechanical Science and Technology Key Factor Analysis.

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

    Nozzles used were of single hose and two hose type. In single hose type, dry ice and compressed air is mixed in the feeder and then supplied to the nozzle whereas for the two hose type, compressed air and dry ice are supplied through a separate hose and mixed within the mixing tube in the nozzle before acceleration [39].

    Get Price
  • Mechanical Engineering at IIT Madras » Thesis

    Numerical study on the effect of particle size, air inlet temperature and oxygen concentration on char combustion: 2012: Theena Thayalan. K: ME10M132: M.Tech: Prof. N. Ramesh Babu: Experimental and numerical investigation of machining induced resudual stresses during orthogonal machining of alloy steel aisi 4340: 2012: Patil Shahaji Sadashiv ...

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  • M.Tech. (Textile Technology) from Rajasthan Technical ...

    Principles and Engineering Design of rotor, air-jet and friction spinning.- Evaluation of vortex spinning-critical review of both systems. Structure & properties of these unconventional yarns. Effect of raw material and machine variables on yarn characteristics. Plying of these yarns.

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  • Major project report - slideshare.net

    Major project report 1. CFD analyses of an air-jet loom i CFD ANALYSES OF AN AIR-JET LOOM by Ágnes Livia BODOR /GG1E60 Submitted to the Department of Fluid Mechanics of the Budapest University of Technology and Economics in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering Modelling May, 2011 Project Report Major Project /BMEGEÁTMWD1 ...

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  • Volume 8 Issue 4

    Research Articles S.NoArticle Title & Author NameDownload 1A CELLULAR HOST USING BASED ON INTERNET PROTOCOL (IP) B.Thatchinamoorthy, Mr.Arul 2A COLLABORATIVE METHOD OF SPATIAL & TRANSFORMATION DOMAIN FOR DIGITAL IMAGE ENHANCEMENT Rogeith.V*, Dr.G.Rosline Nesa Umari 3 A FRAMEWORK FOR DATA SECURITY IN CLOUD COMPUTING R.Priyanka* 4 A NEW EFFICIENT RESCHEDULING METHOD USING A-STAR ALGORITHM FOR ...

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  • Warm Prestress and Residual Stress/Fracture in Welded ...

    The initial estimate of Lr was reduced by a factor of around 1.3 once a revised global limit load solution was used, and the effects of mismatch taken into account. To date, all of the results associated with failure of the plate lie outside the default failure assessment line (FAL), so they support the fracture models in BS 7910 and R6.

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  • Libros: 'Flame stability study' – Grafiati

    Six different fuel nozzle geometries were used in order to study the effect of fuel jet centerline velocity on the stability limits of a low swirling (i.e., 25º) non-premixed biogas flame. Moreover, the biogas surrogate fuel composition was kept constant (60% CH4 and 40% CO2 by volume) using a mixture of pure methane and carbon dioxide gases.

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  • Additive Manufacturing of Structural Ceramics: A ...

    Additive manufacturing is best suited for low-volume production of complex geometries, because time and cost are weakly dependent on complexity; for masked AM processes, time and cost are fully-independent from complexity in the build plane [].A case study performed by Atzeni et al. [] compared the cost of manufacturing an aluminum aerospace component using high-pressure die casting and powder ...

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  • Laser Texturing as Substrate Preparation Technique for ...

    In the present study, WC-12Co and WC-17Co coatings were deposited on AZ91D samples prepared using laser texturing as substrate preparation technique. ... Experiments evaluated the independent ...

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  • MAHLE Catalog Guides - CIF and PunchOut

    The purpose of the catalog guides are to help Suppliers understand the business processes required by MAHLE. Please reach out to the Ariba catalog expert for more information.

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  • Publications - Fluid Mechanics

    Lyu, B and Dowling, AP (2019) An experimental study of the effects of lobed nozzles on installed jet noise. Experiments in Fluids, 60. ISSN 0723-4864. Ma, Y and Cui, J and Vadlamani, NR and Tucker, P (2019) Hierarchical geometry modelling using the immersed boundary method. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 355. pp. 323-348 ...

    Get Price
  • Fabrication of optimized streamlined micro nozzles by ...

    Colucci D W and Viskanta R 1996 Effect of nozzle geometry on local convective heat transfer to a confined impinging air jet Exp. Therm. Fluid Sci. 13 71–80 Crossref Google Scholar [7]

    Get Price
  • Department of Textile Technology IIT Delhi

    A.K.Sengupta, V.K.Kothari and R. Alagirusamy 'Influence of Drawing Variables on the Properties of Air Textured Yarns made from POY Polyester Feeder Yarns' Man Made Fibre Year Book of CTI (1989) p80-83. A.K.Sengupta, V.K.Kothari and R. Alagirusamy 'An analysis of the Air-Jet Yarn-Texturing Process'. Letter to the editor, Journal of the Textile ...

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  • Optimising the Lamination Properties of Textile Composites ...

    This includes the study of air jet texturing machine, texturing of glass yarns, fabric development and finally the fabrication of composite panels. The physical and mechanical test methods and equipment used to characterise the textured and non-textured glass composites and the scientific principles involved in the techniques are described in ...

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  • International Journal of Heat and Mass Transfer - Academic ...

    International Journal of Heat and Mass Transfer is the vehicle for the exchange of basic ideas in heat and mass transfer between research workers and engineers throughout the world. It focuses on both analytical and experimental research, with an emphasis on contributions which increase the basic understanding of transfer processes and their ...

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  • Mechanical Engineering at IIT Madras » Thesis

    Numerical study on the effect of particle size, air inlet temperature and oxygen concentration on char combustion: 2012: Theena Thayalan. K: ME10M132: M.Tech: Prof. N. Ramesh Babu: Experimental and numerical investigation of machining induced resudual stresses during orthogonal machining of alloy steel aisi 4340: 2012: Patil Shahaji Sadashiv ...

    Get Price
  • Technologies

    The inability of ceramic and nanoceramic processing without expensive diamond tools and with a high …

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  • Etching Channels to Create an Air Bearing or a ...

    Air = clean and contaminant free; The Challenges: Small Gap + Tight Tolerance. A liquid bearing can have a 100 µm bearing gap, but an air …

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  • Ahmed Hassanin - Associate Professor - Egypt-Japan ...

    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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  • Endy B Computer International for Bsc, HND & ND: 2015

    2015-6-16 · Studies On Freezing Time Of Foodstuffs 1136. Studies On Phosphoric Irons For Concrete Rreinforcement Applications 1137. STUDY AND DESIGN OF WAVEGUIDE NOTCH FILTER FOR A FREQUENCY OF 28 GHz. 1138. Study Of Biodegradation Of Polyesters 1139. Study Of High Temperature Crack Initiation In Single 1140. Super Air Nozzles 1141. Super Charging 1142.

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