Sökning: "laser powder bed fusion"

Visar resultat 6 - 10 av 27 uppsatser innehållade orden laser powder bed fusion.

1. 6. 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. 7. Product-development for laser powder bed fusion

   Kandidat-uppsats, KTH/Produktionsutveckling

   Författare :Ludvig Dagberg; David Hu; [2023]
   Nyckelord :Laser Powder Bed Fusion; Additive Manufacturing; DFAM; Selective Laser Melting; Design for Additive Manufacturing; Laser beam fusion;

   Sammanfattning : This thesis investigates the differences in the design process when developing a product for additive manufacturing (AM) compared to traditional manufacturing methods, such as CNC machining. In recent years, additive manufacturing (AM), including metal-based laser powder bed fusion (L-PBF), has gained popularity, leading to increased adoption by companies. LÄS MER

4. 8. Influence of Post-treatments on Corrosion Properties of 3D printed Metal Components for Bioprocessing Applications

   Master-uppsats, KTH/Materialvetenskap

   Författare :Leyla Koort; [2023]
   Nyckelord :PBF-LB 316L; surface post-treatments; as-built; tumbling; Hirtisation; DLyte; electropolishing; chemical milling; pitting corrosion; CPT; cyclic potentiodynamic polarisation curves; immersion test in 1M NaCl and 1M NaOH;

   Sammanfattning : Additive manufacturing (AM) has the potential to overtake the conventional production of pipe systems of stainless steel grade 316L intended for bioprocessing applications by utilising powder bed fusion laser beam (PBF-LB) technologies. However, challenges such as high surface roughness need to be overcome and corrosion properties improved to meet industry standards. LÄS MER

5. 9. Comparative investigation of micromechanisms of plastic deformation by in-situ tensile tests of highly textured 316L steel

   Master-uppsats, Uppsala universitet/Institutionen för materialvetenskap

   Författare :Subhani Kumarasinghe; [2022]
   Nyckelord :Additive manufacturing; texture control; plastic deformation;

   Sammanfattning : Additive manufacturing (AM) is identified as one of the best techniques in manufacturing components addressing most of the current challenges including material scarcity, design complexity, material compatibility, etc. Stainless steel 316L is one of the promising material candidates in AM due to its extraordinary properties that are useful in a wide variety of industries. LÄS MER

7. 10. Defect classification in LPBF images using semi-supervised learning

   Master-uppsats, Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013); Karlstads universitet/Avdelningen för datavetenskap

   Författare :Anton Göransson; [2022]
   Nyckelord :Additive manufacturing; Laser powder bed fusion; Machine learning; Siamese neural networks; Deep learning; Defect classification;

   Sammanfattning : Laser powder bed fusion is an additive manufacturing technique that is capable of building metallic parts by spreading many layers of metal powder over a build surface and using a laser to melt specific sections of the surface. The part is built by melting consecutive layers on top of each other until the design is completed. LÄS MER