Search for dissertations about: "Teknisk materialvetenskap - Konstruktionsmaterial"

Showing result 1 - 5 of 21 swedish dissertations containing the words Teknisk materialvetenskap - Konstruktionsmaterial.

  1. 1. Multi-functional composite materials CFRP thin film capacitors

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Tony Carlson; Luleå tekniska universitet.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science - Functional materials; Materials science - Other material science; Teknisk materialvetenskap - Funktionella material; Teknisk materialvetenskap - Övrig teknisk materialvetenskap; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Abstract : The use of lightweight materials in structural applications is ever increasing. Today, lightweight engineering materials are needed to realise greener, safer and more competitive products. READ MORE

  2. 2. Micro-crack initiation and propagation in fiber reinforced composites

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Andrejs Pupurs; Luleå tekniska universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer composites; microdamage; fracture mechanics; FEM modeling; Materials science - Construction materials; Teknisk materialvetenskap - Konstruktionsmaterial; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Abstract : Predicting micro-damage initiation and evolution is one of the key challenges for safe design of fiber reinforced polymer composites. Micro-scale damage such as, for example, single fiber break may be unnoticeable and negligible during the initial service life of composite, however, with many loading and unloading cycles this initially micro-scale damage may propagate forming macroscopic scale cracks that can significantly reduce the service lifetime or even lead to unforeseen catastrophic failure of the composite structure. READ MORE

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

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Edgars Sparnins; Luleå tekniska universitet.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flax fibers; natural fiber composites; mechanical properties; Time dependent behavior; Materials science - Other material science; Teknisk materialvetenskap - Övrig teknisk materialvetenskap; Polymeric Composite Materials; Polymera konstruktionsmaterial;

    Abstract : 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. READ MORE

  4. 4. Effect of boron and hydrogen on microstructure and mechanical properties of cast Ti-6Al-4V

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Raghuveer Gaddam; Luleå tekniska universitet.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Titanium alloy; Metallography; Fractography; Castings; Low cycle fatigue; Hydrogen; Boron; Materials science - Construction materials; Teknisk materialvetenskap - Konstruktionsmaterial; Engineering Materials; Materialteknik;

    Abstract : Titanium and its alloys are widely used in applications ranging from aeroengines and offshore equipment to biomedical implants and sporting goods, owing to their high ratio of strength to density, excellent corrosion resistance, and biomedical compatibility. Among the titanium alloys used in aerospace, Ti-6Al-4V (an α+β alloy) is the most widely used, in applications in which the temperature may reach 350°C, at which point it retains good fatigue and fracture properties as well as moderate tensile strength and ductility. READ MORE

  5. 5. Ti3SiC2 synthesis from TiC and Si powders

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Ida Kero; Luleå tekniska universitet.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science - Construction materials; Teknisk materialvetenskap - Konstruktionsmaterial; Engineering Materials; Materialteknik;

    Abstract : The aim of this work was to produce Ti3SiC2 from TiC and Si powders and to investigate process parameters with respect to optimised Ti3SiC2 yield. The reaction pathway of Ti3SiC2 formation and the thermochemical degradation reactions were examined. READ MORE