Sökning: "Interferometry"

Visar resultat 16 - 20 av 63 uppsatser innehållade ordet Interferometry.

  1. 16. Analysis of Seismic Data Acquired in the Hverahlíð Geothermal Area

    Master-uppsats, Uppsala universitet/Geofysik

    Författare :Agnieszka Stoch; [2020]
    Nyckelord :Hverahlíð geothermal area; reflection seismic; virtual reflection seismic profiling; virtual shot gather; cross-correlation; autocorrelation;

    Sammanfattning : Volcanic rifting environments, such as in Iceland, are challenging for conventional seismic reflection methods using active surface seismic sources. This study demonstrates the potential of a novel technique, called Virtual Reflection Seismic Profiling (VRSP) for imaging reflections in geothermal regions, like Hverahlíð, where a dense seismic array recorded a number of local microearthquakes for cross-correlation. LÄS MER

  3. 17. Antenna Design for Angle of Arrival Measurement in Access Control Applications

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Theodoros Prokic; [2019]
    Nyckelord :Patch Antenna; Angle of Arrival; Bluetooth; Keyless Access Control;

    Sammanfattning : The Bluetooth direction finding working group proposed functionalities to the Bluetooth core that can realize Angle of Arrival estimations using interferometry. The technology can be employed to develop new access control applications. LÄS MER

  4. 18. Electron Beam - Powder Bed Fusion Of Alloy 718 : Influences Of Contour Parameters On Surface And Microstructural Characteristics

    Uppsats för yrkesexamina på avancerad nivå, Högskolan Väst/Avdelningen för Industriell ekonomi, Elektro- och Maskinteknik

    Författare :Christopher Schnur; [2019]
    Nyckelord :EB-PBF; Alloy 718; surface roughness; dimensions; defects; microstructure; EB-PBF; Alloy 718; ytsträvhet; dimensioner; defekter; mikrostruktur;

    Sammanfattning : Additive Manufacturing (AM) is an uprising manufacturing process for parts with complex geometries and low production quantities. Within the layer-wise building process, less additional processes are needed, to produce the parts. This allows a building of parts within a reasonable time- and costs-range. LÄS MER

  5. 19. Friction and wear study of lean powder metallurgy steel in a lubricated sliding contact

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Caroline Lejonklo; [2019]
    Nyckelord :Lean steel; Powder metallurgy PM ; Powder metallurgy steel PM steel ; Friction; Wear; Sliding contact; Lubricated; Porosity; Tribology; Adhesive wear; Abrasive wear; Gear; Gear tooth; Particles; Polyalphaolefin 8 PAO 8 ; Contact pressure; Density; Light optical microscopy LOM ; Scanning electron microscopy SEM ; Energy-dispersive X-ray spectroscopy EDS ; Vertical svanning interferometry VSI ; Pin on disc; Pin-on-disc;

    Sammanfattning : A fairly new technology used to produce metallic components is powder metallurgy (PM). Among the advantages with this technique are decreased cost of production for complex-shaped parts, new alloys are made possible, reduced end processing, less material loss, and vibrational damping effects. LÄS MER

  7. 20. Thermomechanical Design and Analysis of the Lisa Phase Measurement System

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Pablo Martinez Cano; [2019]
    Nyckelord :LISA; PCB; temperature; passive; aluminum; aluminium;

    Sammanfattning : Gravitational Waves (GWs) are ripples in the curvature of spacetime that propagate as waves at the speed of light while travelling basically undisturbed from the moment of their creation by accelerated masses. GWs provide unique information about astrophysical sources, such as binary systems, allowing their exploration under a wide range of masses, mass ratios and physical states inaccessible otherwise and therefore opening a new window to observe the universe. LÄS MER