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Visar resultat 16 - 20 av 305 uppsatser som matchar ovanstående sökkriterier.

  1. 16. Magnetic properties of a martensitic stainless steel powder : Investigation of magnetic properties for a metallic powder with different sizes and its possible correlation to flow properties

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Carl Back; Saga Grevarp; Arthur Pollet; [2023]
    Nyckelord :;

    Sammanfattning : For metal powders, flow properties are important. If the powder does not move properly, it can result in problems with the final product in additive manufacturing. Some of the products created with this manufacturing method are complex and used for important purposes such as medical devices and aerospace. LÄS MER

  3. 17. Synergistic fire- and mechanical effect of biochar and ammonium polyphosphate in epoxy composite

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Anton Olausson; Ludvig Jönsson; [2023]
    Nyckelord :Ammonium polyphosphate; Biochar; Composite; Epoxy; Synergistic effect;

    Sammanfattning : Polymer composites are used in a varying extent and are challenging the use of traditional materials due to the push towards sustainable development. They have replaced steels and aluminum alloys in applications. LÄS MER

  4. 18. Wet Spinning of Cellulose-Lignin Precursor for Carbon Fibers : Effect of Coagulation Bath Composition & Spin Finish

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

    Författare :Julia Sundmark; [2023]
    Nyckelord :Carbon fiber; Cold alkali; Cold NaOH; lignin; cellulose; wet spinning; Kolfiber; kallalkali; lignin; cellulosa; våtspinning;

    Sammanfattning : Carbon fibers (CF) are a material with a composition of over 90% carbon, which has high mechanical properties and low density. This unique combination of properties makes it requirable in applications such as vehicles, aerospace, wind power, and space industries. Commercially made CF are made using the fossil raw material polyacrylonitrile (PAN). LÄS MER

  5. 19. Taking Flight Towards a Greener Future: Steps Airlines Can Take to Reduce Emissions

    Kandidat-uppsats, Lunds universitet/Trafikflyghögskolan

    Författare :Rabin Kronold; Mikael Nyström; [2023]
    Nyckelord :Sustainability; Aviation; Management; Emissions; Carbon footprint; Ground and aircraft operation; Fuel consumption; Contrails; Aircraft-Induced Clouds; Greenhouse gas emissions; Sustainable Aviation Fuel; FLYL01; Technology and Engineering;

    Sammanfattning : Background: For decades, aviation has been an important part of society and with its growth comes the increased environmental impact and the challenge to reduce this adversary effect and move towards sustainability. Objective: Find out how airlines can reduce their emissions and become more sustainable. LÄS MER

  7. 20. Effect of dwell (hold) time on high temperature fatigue crack growth of AM components

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Hemanth Venkatesan; [2023]
    Nyckelord :Dwell time; creep; fatigue; IN718; LPBF; hold time; sustained loading; Uppehållstid; krypning; utmattning; IN718; LPBF; hålltid; ihållande belastning;

    Sammanfattning : GKN Aerospace AB, Sweden (GAS) is one of the leading companies taking up the charge in manufacturing components using Additive Manufacturing(ed) (AM) techniques in the aerospace sector. They are a hub of engineering and they are a supplier of engine and engine components to the world’s leading aero-engine manufacturers, and airframes to civil and military aircraft manufacturers. LÄS MER