Sökning: "Armour material"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Armour material.

  1. 1. Development of Nanostructured Tungsten Based Composites for Energy Applications

    Författare :Mazher Ahmed Yar; Mamoun Muhammed; Per-Olov Käll; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tungsten; Nano-tungsten; ODS tungsten; W-La2O3; W-Y2O3; SPS; Plasma-facing materials; Armour material; fusion material;

    Sammanfattning : Tungsten (W) based materials can be used in fusion reactors due to several advantages. Different fabrication routes can be applied to develop tungsten materials with intended microstructure and properties for specific application including nanostructured grades. LÄS MER

  3. 2. On failure modelling in finite element analysis : material imperfections and element erosion

    Författare :Mattias Unosson; Larsgunnar Nilsson; Kjell Simonsson; Lars Olovsson; Anders Eriksson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element method; element erosion; material failure; material imperfections; crack-tip; Solid mechanics; Fastkroppsmekanik;

    Sammanfattning : This dissertation concerns failure modelling with material imperfections and element erosion in finite element analyses. The aim has been to improve the element erosion technique, which is simple to use and implement and also computationally inexpensive. LÄS MER

  4. 3. Klädd Krigare : Skifte i skandinaviskt dräktskick kring år 1000

    Författare :Annika Larsson; Anne-Sofie Gräslund; Svante Norr; Lise Bender Jorgenssen; Uppsala universitet; []
    Nyckelord :Archaeology; warrior; viking age; armour; rigsthula; bayeux tapestry; birka; coin; sigtuna; runic; baptism; rus; khazar; metal wire; textile; christianisation; silk road; canute the great; mercenaries; trade route; dresscode; virtuous woman; kingship; frisian cloth; Arkeologi;

    Sammanfattning : Using textiles as clues, it is shown that, like in the rest of Scandinavia, there is a legible societal shift in favour of a new Christian organization as early as around year 1000 even in the central parts of what is now Sweden, including the, according to Adam of Bremen, “pagan” Mälar valley. During a period of at least a hundred and fifty years, the Mälar valley with Birka in the centre had enjoyed eastern trade, which is reflected in the rich finds of oriental textile fragments in the Birka graves. LÄS MER

  5. 4. Estimation of electromagnetic material properties with application to high-voltage power cables

    Författare :Yevhen Ivanenko; Sven Nordebo; Martin Norgren; Linnéuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material losses; power cables; cylindrical multipole expansion; Herglotz functions; convex optimization; sum rules; Waves and Signals; Vågor och signaler;

    Sammanfattning : Efficient design of high-voltage power cables is important to achieve an economical delivery of electric power from wind farms and power plants over the very long distances as well as the overseas electric power. The main focus of this thesis is the investigation of electromagnetic losses in components of high-voltage power cables. LÄS MER

  7. 5. Interaction between High-velocity Penetrators and Moving Armour Components

    Författare :Ewa Lidén; Bengt Lundberg; Hevré Couque; Uppsala universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP; Teknisk fysik med inriktning mot hållfasthetslära; Engineering Science with specialization in Solid Mechanics;

    Sammanfattning : This work was aimed at understanding mechanisms of importance for the design of weight-efficient armour against long-rod projectiles (LRP) and shaped charge (SC) warheads. The focus was on how to achieve effective mechanical disturbances on the threat before it hits the target. LÄS MER