The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform

Yüksek Metin - One of the best experts on this subject based on the ideXlab platform.

  • Ribana örgülerde çekimin ve ilmek sıklığının dokuya etkileri
    Marmara Üniversitesi Fen Bilimleri Enstitüsü, 2001
    Co-Authors: Yüksek Metin
    Abstract:

    ÖZETÇalışmada % 100 pamuk elyafı kullanılarak elde edilen Ne 20/1 iplikler kullanılmıştır. Bu ipliklerle üç farklı örgüdeki Ribana kumaşların, çekim ve sıklık farklılıkları ile kumaşlara uygulanan rahatlatma işlemlerine bağlı olarak göstermiş oldukları farklılıklar ortaya çıkarılmaya çalışılmıştır.Araştırma dört ana bölümden oluşturulmuştur.1. Bölümde; Temel örmecilik bilgileri ve literatür özetlerini içermektedir.2. Bölümde; Araştırmada kullanılan örgü kumaşları ürettiğimiz hammaddelerin özellikleri ve örme makinelerinin genel özellikleri bulunmaktadır.3. Bölümde; Kullanılan örgü makinesinin özellikleri, numune kumaşlara uygulanan rahatlatma yöntemleri ve araştırmada yapılan testler ile bu testlerde kullanılan cihazların özellikleri verilmiştir.4. Bölümde ise testler sonucunda elde edilen değerler tablolar ve grafikler halinde verilerek değerlendirme yapılmıştır.ABSTRACTIn this work, %100 cotton yarns of Ne 20/1 were used. The differences of shrinkages, tightness and the relaxation behaviour of three different types of Ribana fabrics knitted by these yarns were investigated.This work consists of four main chapters: In the first chapter, basic information on Knitting and the literature survey were given. The second chapter deals with the properties of the raw materials used for the production of the knitted fabrics and the main features of Knitting Machinery. In the third chapter, the features of the Knitting machine that was employed in this work, the relaxation methods applied to the fabrics, the test methods and the equipment used in these tests were explained. In the fourth chapter, the test results and the conclusive remarks were presented by various tables and graphs

  • Ribana örgülerde çekimin ve ilmek sıklığının dokuya etkileri
    'Marmara Universitesi Ilahiyat Fakultesi Dergisi', 2001
    Co-Authors: Yüksek Metin
    Abstract:

    Çalışmada % 100 pamuk elyafı kullanılarak elde edilen Ne 20/1 iplikler kullanılmıştır. Bu ipliklerle üç farklı örgüdeki Ribana kumaşların, çekim ve sıklık farklılıkları ile kumaşlara uygulanan rahatlatma işlemlerine bağlı olarak göstermiş oldukları farklılıklar ortaya çıkarılmaya çalışılmıştır. Araştırma dört ana bölümden oluşturulmuştur. 1. Bölümde; Temel örmecilik bilgileri ve literatür lerini içermektedir. 2. Bölümde; Araştırmada kullanılan örgü kumaşları ürettiğimiz hammaddelerin özellikleri ve örme makinelerinin genel özellikleri bulunmaktadır. 3. Bölümde; Kullanılan örgü makinesinin özellikleri, numune kumaşlara uygulanan rahatlatma yöntemleri ve araştırmada yapılan testler ile bu testlerde kullanılan cihazların özellikleri verilmiştir. 4. Bölümde ise testler sonucunda elde edilen değerler tablolar ve grafikler halinde verilerek değerlendirme yapılmıştır. ABSTRACT In this work, %100 cotton yarns of Ne 20/1 were used. The differences of shrinkages, tightness and the relaxation behaviour of three different types of Ribana fabrics knitted by these yarns were investigated. This work consists of four main chapters: In the first chapter, basic information on Knitting and the literature survey were given. The second chapter deals with the properties of the raw materials used for the production of the knitted fabrics and the main features of Knitting Machinery. In the third chapter, the features of the Knitting machine that was employed in this work, the relaxation methods applied to the fabrics, the test methods and the equipment used in these tests were explained. In the fourth chapter, the test results and the conclusive remarks were presented by various tables and graphs

Debes Hattacharyya - One of the best experts on this subject based on the ideXlab platform.

  • simulating the deformation mechanisms of knitted fabric composites
    Composites Part A-applied Science and Manufacturing, 2006
    Co-Authors: Miro Duhovic, Debes Hattacharyya
    Abstract:

    Abstract For composite materials with complex reinforcing structures, such as knitted fabrics, a material model must be able to accommodate the most important parameters so that the material can be simulated accurately. Sometimes these important parameters can be found by examining the reinforcing structure alone. To investigate these parameters physically would be very difficult because of the scale and level of detail required; however, using advanced numerical micro-simulations a large quantity of information can be made available. By numerically simulating the tensile test of a knitted specimen the most important parts of the textile structure’s deformation behaviour can be identified. In this study a numerical micro-specimen has been developed by simulating the actual fabric manufacture, so that the force-determined geometry and residual stresses incurred during the manufacturing process are captured. The two-step modelling procedure is performed using a dynamic explicit finite element code. Each filament is represented by a series of rigidly connected beam elements, which undergo a complex set of contact interactions. To validate the model, numerical simulations of the warp direction load versus extension is compared with the experimental data. It has been proposed that eight individual deformation modes exist for textile materials in general. For different reinforcing fabrics the influence of each of these mechanisms during fabric deformation is different; however, the definition of a generalised model allows user inputs for these parameters. These input data can be obtained by taking numerical measurements from the micro-specimen model, which is in itself, capable of producing different knitted structures by adjusting the boundary conditions that represent elements of the Knitting Machinery.

Miro Duhovic - One of the best experts on this subject based on the ideXlab platform.

  • simulating the deformation mechanisms of knitted fabric composites
    Composites Part A-applied Science and Manufacturing, 2006
    Co-Authors: Miro Duhovic, Debes Hattacharyya
    Abstract:

    Abstract For composite materials with complex reinforcing structures, such as knitted fabrics, a material model must be able to accommodate the most important parameters so that the material can be simulated accurately. Sometimes these important parameters can be found by examining the reinforcing structure alone. To investigate these parameters physically would be very difficult because of the scale and level of detail required; however, using advanced numerical micro-simulations a large quantity of information can be made available. By numerically simulating the tensile test of a knitted specimen the most important parts of the textile structure’s deformation behaviour can be identified. In this study a numerical micro-specimen has been developed by simulating the actual fabric manufacture, so that the force-determined geometry and residual stresses incurred during the manufacturing process are captured. The two-step modelling procedure is performed using a dynamic explicit finite element code. Each filament is represented by a series of rigidly connected beam elements, which undergo a complex set of contact interactions. To validate the model, numerical simulations of the warp direction load versus extension is compared with the experimental data. It has been proposed that eight individual deformation modes exist for textile materials in general. For different reinforcing fabrics the influence of each of these mechanisms during fabric deformation is different; however, the definition of a generalised model allows user inputs for these parameters. These input data can be obtained by taking numerical measurements from the micro-specimen model, which is in itself, capable of producing different knitted structures by adjusting the boundary conditions that represent elements of the Knitting Machinery.

Power Jess - One of the best experts on this subject based on the ideXlab platform.

  • Yarn to fabric: Knitting: Chapter 12.
    'Elsevier BV', 2015
    Co-Authors: Power Jess
    Abstract:

    Knitwear in recent years has gained a significant share of the global fashion market. This is accredited to the acceptability of casual dress and the versatility of the structure range that can be produced on modern Knitting Machinery. This chapter begins by discussing the process of mechanical loop formation and detailing the key terminology. The middle section focuses directly on the types of knitted fabrics clearly distinguishing between warp and weft Knitting technologies. The case study details a fashion garment and highlights the importance of considering user requirements prior to embarking on the design process. The chapter closes by identifying future trends and new technological innovation

  • Yarn to fabric: Knitting
    'Elsevier BV', 2014
    Co-Authors: Power Jess
    Abstract:

    Abstract Knitwear in recent years has gained a significant share of the global fashion market. This is accredited to the acceptability of casual dress and the versatility of the structure range that can be produced on modern Knitting Machinery. This chapter begins by discussing the process of mechanical loop formation and detailing the key terminology. The middle section focuses directly on the types of knitted fabrics, clearly distinguishing between warp and weft-Knitting technologies. The case study details a fashion garment and highlights the importance of considering user requirements prior to embarking on the design process. The chapter closes by identifying future trends and new technological innovations

Dias T - One of the best experts on this subject based on the ideXlab platform.

  • Fully fabric knitted antennas for wearable electronics
    'Institute of Electrical and Electronics Engineers (IEEE)', 2013
    Co-Authors: Zhang S, Chauraya A, Seager R, Vardaxoglou Y, Whittow W, Acti T, Dias T
    Abstract:

    The worldwide wearable technology market is expected to exceed $6B by 2016 and wearable antennas will be used by the emergency services, fashion designers, military, athletes and patients. Exploring different methods of fabricating antennas is important especially as user comfort and aesthetics are key considerations in ensuring mainstream acceptance. Previously the authors have examined embroidered antennas using highly conductive threads [Chauraya et al. EuCAP 2012]. Please see this paper for a detailed literature review of wearable antennas. In this paper, we examine Knitting as a technique of fabricating antennas. These antennas were fully fabric with a knitted ground plane, a knitted substrate and a knitted patch element. They were fabricated using industrial Knitting Machinery and hence could potentially be scaled up to mass-manufacture. Four different versions were considered (all had a knitted ground plane and substrate): i) a conducting coated nylon fabric (Nora Dell); ii) a knitted patch with a high fiber density (Sample 1); iii) a knitted patch with a medium fiber density (Sample 2) and iv) a knitted patch with a coarse fiber density (Sample 3). The resulting antennas were extremely flexible and soft to the touch. The return loss results are shown in the figure. All the antennas were fed with a probe feed positioned the same distance from the edge of the patch - the magnitude of the return loss could be improved by finding the optimal feeding point. The S11 and associated bandwidth results of the antennas suggests that the Nora Dell antenna exhibits the smallest losses. The results also indicate that the losses of the knitted antennas improve as the knitted patches became denser. The presentation will include measured radiation patterns, efficiency results and an in-depth analysis of the strengths and weaknesses of this manufacturing technique