Sökning: "woven fabric"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden woven fabric.

  1. 1. On Woven Convolutional Codes

    Författare :Stefan Höst; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automation; iterative decoding; woven convolutional code; cascaded convolutional code; free distance; convolutional code; active distance; robotics; control engineering; Automatiska system; robotteknik; reglerteknik;

    Sammanfattning : Concatenation of several conventional convolutional encoders is a both powerful and practical method to obtain encoding schemes that are attractive for use in communication systems where very low error probabilities are needed. This thesis is devoted to woven convolutional codes, a construction where the constituent codes are woven together in a manner that resembles the structure of a fabric. LÄS MER

  3. 2. The use of Textiles in an Acoustic Context

    Författare :Karl Tillberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; porous absorbers; knitted fabric; woven fabric; helmholtz absorbers; room acoustics; nonwoven material; classroom; acoustic textiles; resonance absorbers; panel absorbers;

    Sammanfattning : Working with textiles in an acoustic context gives enormous possibilities to combine the acoustic function of materials with the visual function (aesthetics). Depending on the material choice and the production techniques, textiles may for instance be flexible, stiff, airtight, have high density or high porosity. LÄS MER

  4. 3. Eco-designed functionalization of polyester fabric

    Författare :Tove Agnhage; Guido Sonnemann; Isabelle Vroman; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Eco-design; Life cycle assessment; Madder; Anthraquinone; Bioactive; Multifunctional; Polyester; Textil och mode generell ; Textiles and Fashion General ;

    Sammanfattning : There is an increased awareness of the textile dyeing and finishing sector’s high impact on the environment due to high water consumption, polluted wastewater, and inefficient use of energy. To reduce environmental impacts, researchers propose the use of dyes from natural sources. LÄS MER

  5. 4. 3D-Weaving and Noobing: Characterization of Interlaced and Non-interlaced 3D Fabric Forming Principles

    Författare :Nandan Khokar; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : TEXTILE-based composite materials are the rapidly developing light-weight engineering materials. Fabrics constitute the reinforcement component of the composite material. The fabrics used in composites manufacture are referred to as preforms and are especially engineered as a single-fabric system to impart reliability and performance. LÄS MER

  7. 5. Flexible Composites - Strength, Deformation and Fracture Proecesses in Woven and D.O.S. Reinforcement Materials

    Författare :Torbjörn Dartman; Industriell Produktion; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kompositmaterial; Composite materials; Textile materials; Joints; Coated fabrics; Tear strength; Flexible composites; Damage resistance;

    Sammanfattning : In this thesis the tensile strength, deformation, damage resistance and tear propagation for flexible composites are analysed. There are two essential requirements common to all flexible composites; namely, high tearing strength and good matrix-to-fabric adhesion. The interaction of fabric and matrix is complex. LÄS MER