Search for dissertations about: "WEAR MECHANISM"

Showing result 1 - 5 of 56 swedish dissertations containing the words WEAR MECHANISM.

  2. 1. On wear of wood-cutting tools : Tool materials, wear mechanisms and modelling

    University dissertation from Karlstad : Karlstad University Studies

    Author : Johan Nordström; [2005]
    Keywords : Tool material; Wood cutting; Wear; Modelling;

    Abstract : Bandsaw blades are commonly used in the sawmill industry for timber cutting. The saw teeth are gradually worn during cutting and will finally cause unacceptable surface roughness and dimensional deviations on the sawn wood product. Maintenance by re-sharpening of the saw teeth is therefore necessary after a certain time of sawing. READ MORE

  4. 2. Lubrication mechanism of hydrocarbon-mimicking ionic liquids

    University dissertation from Luleå : Luleå University of Technology

    Author : Erik Nyberg; Luleå tekniska universitet.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; P-SiSO; boundary film; silicate; friction; wear; anti-wear; friction modifier; base fluid; Maskinelement; Machine Elements;

    Abstract : Lubrication is critical in order to achieve high efficiency and reliability of machine elements such as gears, bearings, and other moving mechanical assemblies (MMA). In space applications, tribological properties of lubricants are quickly growing more important. READ MORE

  5. 3. A Ni3Al-alloy and its Composites as Potential Wear Resistant Materials for Advanced Applications

    University dissertation from Luleå : Luleå University of Technology

    Author : Karin Anne Xia Gong; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Abrasive wear; Intermetallic matrix composite; Friction coefficient; Wear-resistant materials.; Nickel aluminide; Specific wear rate; Sliding wear;

    Abstract : The Ni3Al-based intermetallic alloys as engineering materials in service, they may be subjected to a wear environment of some sort. Hence, it is technologically important to understand the tribological response and to determine methodologies to improve wear resistance of these advanced materials. READ MORE

  6. 4. Wear mechanisms in sheet metal forming Effects of tool microstructure, adhesion and temperature

    University dissertation from Karlstad : Karlstad University

    Author : Anders Gåård; Karlstads universitet.; Karlstads universitet.; Karlstads universitet.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materialteknik; Materials Engineering; Galling; sheet metal forming; wear; friction; adhesion; temperature;

    Abstract : The general trend in the car body manufacturing industry is towards low-series production and reduction of press lubricants and car weight. The limited use of lubricants, in combination with the introduction of high and ultrahigh-strength sheet materials, continuously increases the demands on the forming tools. READ MORE

  7. 5. Wear and Fixation of the acetabular component in vivo evaluation of different polyethylenes and modes of fixation in total hip arthroplasty

    University dissertation from Karlstad : Karlstad University

    Author : Stephan Maximilian Röhrl; Umeå universitet.; [2004]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; total hip arthroplasty; acetabular component; wear; fixation; osteolysis; Radiostereometry; RSA; Kirurgi; MEDICINE Surgery; MEDICIN Kirurgi; ortopedi; Orthopaedics;

    Abstract : Polyethylene wear and micromotion of the implant play an important role in multifactorial etiology of osteolysis leading to aseptic loosening of the acetabular components. Despite excellent results in primary total hip arthoplasty in a 10-15 year perspective there are still unsolved problems. READ MORE