Essays about: "surface roughness"

Showing result 1 - 5 of 123 essays containing the words surface roughness.

  1. 1. Simulation of Tribological Contacts in Hydraulic Machines

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

    Author : Fredrik Roselin; [2018]
    Keywords : Tribology; Friction; Wear; Lubrication; Mixed lubrication; Luleå Mixed Lubrication Model; LMLM; Tribologi; Friktion; Nötning; Smörjning; Blandad tunnfilmssmörjning;

    Abstract : Axial piston machines are operating at high pressure and varying speeds, which requires high reliability of the components. The machine components are separated by a fluid film, but sometimes this film gets penetrated by the surface asperities causing the machine to operate with metal-to-metal contact. READ MORE

  2. 2. Effect of Surface roughness for Hydro Turbine Step-up Efficiency

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

    Author : Ermias Beraki; [2018]
    Keywords : Hydropower; Surface roughness; Hydro Turbine; Step-up Efficiency; IEC 62097 standard; Prototype and Model;

    Abstract : The energy produced by the flow of water is known as hydropower. It is an easily accessible and available source of energy in large quantity in the form of, rivers, lakes, streams and runoffs around the world. Hydropower is dependent upon hydrological cycle hence; this beneficial characteristic of hydropower makes it a renewable source of energy. READ MORE

  3. 3. Exploratory study of the interactions between textured alumina coatings and steel

    University essay from KTH/Materialvetenskap

    Author : Jonas Svantesson; [2018]
    Keywords : alpha Al2O3; diffusion couple; chemical wear; crater wear; DICTRA;

    Abstract : The crater wear of alumina coated WC-Co cutting tools is thought to be influenced by the chemical reactions between the coating and the workpiece material. Three different crystal orientations ((001), (012), and (100) of alpha alumina CVD coatings are examined in combination with four workpiece materials of steel to establish what reactions are present, and the extent of diffusion. READ MORE

  4. 4. Titanium Surface Properties: A comparison of titanium from two suppliers

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Adam Almström; [2018]
    Keywords : Titanium; Titanium corrosion; Electron backscatter diffraction; EBSD; Glow-discharge optical emission spectroscopy; GDOES; materials chemistry; materialkemi; Technology and Engineering;

    Abstract : This master thesis, completed at the company Alfa Laval studied the surface properties of grade 1 titanium from two different suppliers to examine if there were any significant differences between the two suppliers. Previously titanium from the two suppliers had performed differently at times when used in Alfa Lavals heat exchangers. READ MORE

  5. 5. Enhancing Filament Quality and Investigations on Print Quality of Thermoplastic Elastomer (TPE) products manufactured by Fused Deposition Modeling (FDM)” : Developing a robust methodology by optimizing the respective process variables

    University essay from Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap; Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap


    Abstract : Additive manufacturing is gaining popularity at a rapid rate and has been a resourceful production process to reduce material usage, wastage (scrap) and manufacturing costs for various applications. The project conducted, emphasizes on Thermoplastic Elastomer (TPE SE6300C-65A) material, which is a highly versatile compound, and has the ability to exhibit properties of both rubber (Elastomers) in terms of flexibility and plastic (Polymers) in terms of recyclability. READ MORE