Sökning: "Fiber-reinforced composite"

Visar resultat 16 - 20 av 37 avhandlingar innehållade orden Fiber-reinforced composite.

  1. 16. Micromechanics approach to stiffness characterization of woven composites

    Författare :Normunds Jekabsons; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : Thesis consider the stiffness of woven composites, methods of its calculation and stiffness reduction due to damage accumulation during the service. First, reliable methods for stiffness calculation of undamaged woven composites are considered. There are a large amount of simple approximate methods available in literature. LÄS MER

  3. 17. Mechanical properties of flax fibers and their composites

    Författare :Edgars Sparnins; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymeric Composite Materials; Polymera konstruktionsmaterial;

    Sammanfattning : Flax fibers, along with a number of other natural fibers, are being considered as an environmentally friendly alternative of synthetic fibers in fiber-reinforced polymer composites. A common feature of natural fibers is a much higher variability of mechanical properties. LÄS MER

  4. 18. Mechanics of microdamage development and stiffness degradation in fiber composites

    Författare :Johannes Eitzenberger; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymeric Composite Materials; Polymera konstruktionsmaterial;

    Sammanfattning : Damage in composites reduces its performance and durability and thus its usefulness. The common subject in all papers presented in the licentiate thesis is distributed microdamage, and the materials of interest are a Hemp/Lignin natural composite and glass/carbon fiber reinforced plastics composites. LÄS MER

  5. 19. Mechanical properties of flax fibers and their composites

    Författare :Edgars Sparnins; Kristofer Gamstedt; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flax fibers; natural fiber composites; mechanical properties; Time dependent behavior; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : Flax fibers, along with a number of other natural fibers, are being considered as an environmentally friendlier alternative of synthetic fibers in fiber-reinforced polymer composites. A common feature of natural fibers is a much higher variability of mechanical properties. LÄS MER

  7. 20. Modeling the mechanical performance of natural fiber composites

    Författare :Erik Marklund; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : Due to environmental concerns the interest in use of renewable and recyclable materials has dramatically increased over the recent years. Wood and other lignocellulosic fiber reinforced polymers have large potential as structural materials due to the high specific stiffness, high specific strength and high aspect ratio of the fibers. LÄS MER