Sökning: "impact toughness testing"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden impact toughness testing.

1. 1. Fatigue and microstructural study of a 316L austenitic stainless steel marine component produced by Wire Arc Additive Manufacturing (WAAM)

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

   Författare :Oskar Bremler; [2022]
   Nyckelord :Fatigue; steel; 316L; waam; wire arc additive manufacturing; AM; additive manufacturing;

   Sammanfattning : In this study, the fatigue- and fracture properties and microstructure of a marine component of austenitic stainless steel 316L manufactured with the novel method Wire Arc Additive Manufacturing were investigated and compared with data from literature. The purpose was to find a critical flaw size in the material related to its fatigue life. LÄS MER

3. 2. Investigation Of Mechanical Properties And Microstructure Of Steel-Wires

   Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Khalifa Maissara; [2021]
   Nyckelord :steel; heat treatment; quenching and partitioning; quenching and tempering; retained austenite; wear mechanisms; wear testing;

   Sammanfattning : Wear and friction are among the major problems faced in several industries such as mining industry. This creates challenges to select better materials with good wear behavior in order to improve the service life of the components. LÄS MER

4. 3. Evaluation of mechanical and microstructural properties for laser powder-bed fusion 316L

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

   Författare :Philip Eriksson; [2018]
   Nyckelord :Additive Manufacturing; Laser Powder-Bed Fusion; L-PBF; 316L; Mechanical Properties;

   Sammanfattning : This thesis work was done to get a fundamental knowledge of the mechanical and microstructural properties of 316L stainless steel fabricated with the additive manufacturing technique, laser powder-bed fusion (L-PBF). The aims of the thesis were to study the mechanical and microstructural properties in two different building orientations for samples built in two different machines, and to summarize mechanical data from previous research on additive manufactured 316L. LÄS MER

5. 4. In-situ Reduction by Incorporating H2 Filled Hollow Glass Microspheres in PM HIP Capsules

   Master-uppsats, KTH/Materialvetenskap

   Författare :Emil Strand; [2018]
   Nyckelord :Hot isostatic pressing; hollow glass microspheres; powder metallurgy; oxide reduction; surface oxides; hydrogen;

   Sammanfattning : For many metal components the presence of hard, non-metallic inclusions such as oxides lowers the impact toughness by acting as fracture initiation points and easing crack propagation. In components produced by powder metallurgy hot isostatic pressing (PM HIP), oxides often form a continuous network of small, spherical inclusions after consolidation at the prior particle boundaries (PPB). LÄS MER

7. 5. Development of Dynamic Test Method and Optimisation of Hybrid Carbon Fibre B-pillar

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Emil Johansson; Markus Lindmark; [2017]
   Nyckelord :Dynamic test method; B-pillar; Crash worthiness; Side impact crash test; IIHS; Carbon fibre reinforced polymer composite; Composite failure; CFRP; UD; 2x2 Twill; Delamination; Finite Element Method; LS-Dyna; Steel-composite interface; Bilinear fracture toughness;

   Sammanfattning : The strive for lower fuel consumption and downsizing in the automotive industry has led to the use of alternative high performance materials, such as fibre composites. Designing chassis components with composite materials require accurate simulation models in order to capture the behaviour in car crashes. LÄS MER