Essays about: "Grain size measurement"

Showing result 1 - 5 of 14 essays containing the words Grain size measurement.

  1. 1. Shallow Water : A comparison between hydraulic measurements and numerical models

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Dan Nilsson; [2023]
    Keywords : CFD; Surface Roughness; Manning coefficient; Hydropower;

    Abstract : In the near future hydropower will be used to regulate intermittent energy sources, shallow water ways can then occur in close proximity to the power plants, where the bottom often consists of stones in a similar length scale as the water depth. The idea of this project, which has been initiated by Vattenfall R\&D, is to compare experimental measurements in a laboratory environment with numerical simulations with CFD, this to find a way to represent roughness structures where there is low relative submergence. READ MORE

  3. 2. An Overview of State-of-the-art Hydraulic Conductivity Measurements in Coarse Grained Materials

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Jakob Andrén; [2021]
    Keywords : hydraulic conductivity; permeability; embankment dam; coarse grained; flow regime; hydraulisk konduktivitetsmätning; permeabilitet; fyllnadsdamm; grovkorniga material; flödesregim;

    Abstract : Embankment dams are made from soil materials of varying sizes and widely used all over the world.When constructing these, knowing the hydraulic conductivity (K) of the soil materials is a keyparameter in order to construct safe embankment dams. A knowledge gap regarding K measurementsin coarse grained soils has been identified. READ MORE

  4. 3. DILATOMETRIC EVALUATION OF SOME CRITICAL PHYSICAL PROPERTIES OF OT75 AND OT101 STEEL GRADES

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Wrya Mohamadian; [2021]
    Keywords : Steels; Martensite; Ms; Quenching; Heat treatment; Dilatometer; Mechanical property; Critical temperature; Phase transformation; hardness.;

    Abstract : Due to its hardness, martensite, perhaps, is the most desirable structure, but at the same time, martensite is very brittle. Balancing between hardness and brittleness is a challenge that steel manufacturers must deal with it. To decrease brittleness and to solve this problem, designers purposely temper the steel. Heat treatment, e. READ MORE

  5. 4. Effect of Stainless Steel Additive Manufacturing On Heat Conductivity and Urea Deposition

    University essay from KTH/Materialvetenskap

    Author : Sabrina El Mouhib; [2020]
    Keywords : ;

    Abstract : Hydroforming is the manufacturing process that Scania uses to produce exhaust pipes with complex shape and high durability.  Selective Laser Melting is the process used by designers to print prototype pipes and perform emissions tests before mass production. READ MORE

  6. 5. Image Analysis Methods For Additive Manufacturing Applications

    University essay from Högskolan Väst/Avdelningen för avverkande och additativa tillverkningsprocesser (AAT)

    Author : Jayanth Ramakrishna Yogendra; [2020]
    Keywords : Additive Manufacturing; Image Analysis; ImageJ; MIPAR; Superalloys;

    Abstract : There is an upsurge of research interest on Ni-based superalloys additively manufactured (AM) in aerospace sectors. However, achieving the accuracy and quality of the AM part is a challenging task because it is a process of adding material layer by layer with different process parameters. READ MORE