Sökning: "out-of-plane orientation"

Hittade 5 uppsatser innehållade orden out-of-plane orientation.

  1. 1. Heteroepitaxial Growth of GaN Film on Si substrate by Magnetron Sputtering

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Zahra Mohammadianrasnani; [2023]
    Nyckelord :GaN; Sputter epitaxy; Thin film;

    Sammanfattning : In this study, the effect of AlN buffer layer structure and morphology on the GaN films deposited on Si (111) substrate by reactive DC magnetron sputtering have been studied. For structural and morphological characterization X-ray diffraction (XRD) and Scanning electron microscope (SEM) were used. LÄS MER

  3. 2. CHARACTERISATION OF CROSS LAMINATED TIMBER PROPERTIES

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Emil Nilsson; [2021]
    Nyckelord :CLT; cross laminated timber; in-plane loading; out-of-plane loading; beam; rolling shear modulus; experimental tests; FE-modelling; Technology and Engineering;

    Sammanfattning : This project concerns an analysis of a hitherto untested method for determining the modulus of elasticity (MoE) and shear modulus parallel to grain, as well as the rolling shear modulus of cross laminated timber (CLT) through 3-point bending tests. A review of analytical models and methods is included, followed by an evaluation of the effect of the annual ring orientation and shear stress distribution at shear loading of individual board cross-sections. LÄS MER

  4. 3. Topology Optimization for Additive Manufacturing Considering Stress and Anisotropy

    Master-uppsats, Linköpings universitet/Mekanik och hållfasthetslära

    Författare :Henrik Alm Grundström; [2017]
    Nyckelord :Topology Optimization; Stress Constraints; Additive Manufacturing; Anisotropic Material Proporties;

    Sammanfattning : Additive manufacturing (AM) is a particularly useful manufacturing method for components designed using topology optimization (TO) since it allows for a greater part complexity than any traditional manufacturing method. However, the AM process potentially leads to anisotropic material properties due to the layer-by-layer buildup of parts and the fast and directional cooling. LÄS MER

  5. 4. Biaxial alignment in off-normally deposited films using highly ionized fluxes

    Master-uppsats, Institutionen för fysik, kemi och biologi; Tekniska högskolan

    Författare :Tsung-Han Wu; [2013]
    Nyckelord :Biaxial alignment; biaxial texture; out-of-plane orientation; in-plane orientation; HiPIMS; HPPMS; Chromium;

    Sammanfattning : The influence of highly ionized fluxes on the biaxial alignment in thin films has been investigated by studying the relation between the effect of ionization degrees and different process conditions, including magnetron position, working pressure and substrate bias voltage. In this thesis work, SEM and XRD techniques were employed to study the morphology and crystallographic properties of Cr films grown by High Power Impulse Magnetron Sputtering (HiPIMS) and Direct Current Magnetron Sputtering (DCMS) on Si substrate with a native SiO2 layer. LÄS MER

  7. 5. Modelling and Visualization of the Geometry of Fibre Materials

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Väg- och vattenbyggnad (CI)

    Författare :Niklas Edlind; [2003]
    Nyckelord :micro structure; visualisation; 3D model; fibre network; Cellulose fibres; geometry; Technology and Engineering;

    Sammanfattning : A geometry model for three dimensional fibre networks is proposed. The geometry model is intended to be a part of a system, where data from a computer tomography of a fibre material can be fitted to the geometry model and from there, be evaluated according to key parameters such as fibre length, fibre orientation angles and radii of curvature. LÄS MER