Sökning: "LPBF"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet LPBF.

1. 1. Investigation of Roughness Effects on Heat Transfer of Upscaled Additively Manufactured Channels in the Turbulent Region Using Infrared Thermography

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Kaibin Wen; [2023]
   Nyckelord :Investigation of Roughness Effects on Heat Transfer of Upscaled Additively Manufactured Channels in the Turbulent Region Using Infrared Thermography; Additiv tillverkning; värmeöverföring; infraröd termografi; ytjämnhet; finita elementmetoden;

   Sammanfattning : Additive manufacturing (AM) has largely improved design freedom compared with traditional manufacturing processes such as casting and milling. The layer-by-layer workflow makes it possible to produce objects with much more complex shapes and structures. LÄS MER

3. 2. 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

4. 3. 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

5. 4. 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

7. 5. Microstructural and Micro-Mechanical Characterization of As-built and Heat-treated samples of HASTELLOY X produced by Laser Powder Bed Fusion Process

   Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

   Författare :Onimisi Sanni; [2022]
   Nyckelord :As-built Hastelloy X blocks; Laser powder bed fusion LPBF ; Solution heat-treatment; Disrupted epitaxial growth; Melt Pool Boundaries MPB ; Grain Boundaries GB ; Precipitates; In-situ microtensile testing; microhardness; Mechanical properties; Twin grain boundary fractions;

   Sammanfattning : Microstructure and micro-mechanical characterization of as-built and heat-treated samples of Hastelloy X produced by laser powder bed fusion (LPBF) process has been carried out in this study. As-built LPBF blocks were solution heat-treated at 1177°C and 1220°C followed by fast cooling. LÄS MER