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Visar resultat 1 - 5 av 11 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Cryogenic properties of additive manufactured austenitic stainless steels for space applications

    Master-uppsats, Luleå tekniska universitet/Materialvetenskap

    Författare :Patricio Piantanida; [2023]
    Nyckelord :austenitic stainless steel; additive manufacturing; cryogenic;

    Sammanfattning : The mechanical properties of three austenitic stainless steel alloys, namely 21-6-9, 316L and a modifed 316, fabricated via laser powder bed fusion, have been studied. From the results previously obtained through tensile tests at room and cryogenic temperatures, their strength and ductility were compared against similar conventionally processed materials. LÄS MER

  3. 2. Investigation of high temperature stability of additive manufactured austenitic stainless steels for space applications

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Materialvetenskap

    Författare :Belén Alonso Rancurel; [2023]
    Nyckelord :austenitic stainless steel; additive manufacturing; high temperature corrosion; high temperature stability;

    Sammanfattning : Additive manufacturing (AM) techniques are being studied for their application in the aerospace industry. Numerous benefits come from the already in shape final piece, which needs reduced amount of prime material for its production and can have its shape numerically optimized for weight reduction. LÄS MER

  4. 3. IMPROVED SUB SYSYEM ENCLOSURE

    Magister-uppsats, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :EMMANUEL PETER; ALAN SHAJI; [2022]
    Nyckelord :Prefabricated Enclosure Wall Panel Systems PEWPS ; Modern Methods of Construction MMC ; Panelized systems; Prefabricated panels; Stainless steel 316; Lean; Nonconformities;

    Sammanfattning : Building envelopes are perhaps the most influencing players on assuring indoor comfort conditions, in alliance with their impact on the sustainability and energy-efficiency of the building during operation. However, given the multitude of commercial solutions available on the market and the use of different criteria and inconsistent semantics among the existing categorization/classification systems of construction objects, there is still a need for uniformization of the many regarding the main Prefabricated Enclosure Wall Panel Systems (PEWPS) for building applications. LÄS MER

  5. 4. Thermal Stability of Titanium and Niobium Stabilized Stainless Steel

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Oskar Darselius Berg; [2020]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This master thesis examined the microstructure after heat treatments in stainless steel, two conventional stainless steel (304 and 316) and two novel high temperature stainless steel. These stainless steels are for the use in high temperature heat exchangers for extended temperature range. LÄS MER

  7. 5. Design Investigation into Liquid Oxygen Vaporisation Systems : Atomisation and Heat Loads

    Master-uppsats, KTH/Energiteknik

    Författare :Borbala Bernus; [2020]
    Nyckelord :LOx; gasification; two-phase CFD simulation; rapid oxidation; rocket; cryogenic; hybrid; atomisation; LOx; förgasning; 2-fas CFD-simulering; snabb oxidation; raket; kryogen; hybrid; atomisering;

    Sammanfattning : Computational Fluid Dynamics (CFD) simulations are presented within this study for super-cooled liquid oxygen atomisation and gasification in a subcritical chamber operating at 1MPa. Relatively low cost simulation techniques have been used and their accuracy evaluated. LÄS MER