Search for dissertations about: "Maskinelement"

Showing result 1 - 5 of 147 swedish dissertations containing the word Maskinelement.

  1. 1. Tribology of hydraulic motor

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Daniel Nilsson; Luleå tekniska universitet.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : A radial piston hydraulic motor has several components involving sliding or rolling interfaces which may encounter tribological problems. Seizure is one of them and it results in complete stoppage of motion between the relatively moving components and has serious consequences in terms of the operation of a hydraulic motor. READ MORE

  2. 2. Parameters affecting the functionality of additives in lubricated contacts effect of base oil polarity

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Aldara Naveira Suarez; Luleå tekniska universitet.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Traditionally rolling contact fatigue observed in bearing field applications was subsurface initiated. However, despite the improvement of steel properties, some factors such as downsizing in bearing design, extreme loading of the bearings as well as demanding application conditions (start up-stop cycles) have led to an increase on the cases of surface damage related to surface initiated fatigue, that comes basically from surface distress. READ MORE

  3. 3. Grease lubrication in radial lip seals

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Pieter Baart; Luleå tekniska universitet.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Abstract : Rolling element bearings contain seals to keep lubricant inside and contamination outside the bearing system. These bearings are more often lubricated with grease rather than oil. Much knowledge is available on oil lubricated seals but a good understanding of grease lubricated seals is lacking. READ MORE

  4. 4. Elastohydrodynamic Lubrication of Cam and Roller Follower

    University dissertation from Luleå tekniska universitet

    Author : Mohammad Shirzadegan; Luleå tekniska universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Modelling and simulation of friction is a research issue that still requires an extensive amount of input from the scientific community. In a lubricated system, the dissipation of energy is connected to the direct contact between the surfaces, or more precisely the tribofilms, as well as of the shearing of the lubricant film. READ MORE

  5. 5. Friction and Wear Phenomena in Steels at Elevated Temperatures

    University dissertation from Luleå tekniska universitet

    Author : Sinuhe Hernandez; Luleå tekniska universitet.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Different grades of steels are often exposed to high temperatures whether during their shaping/forming or during their use in several applications. This exposure to high temperature has a great bearing on the resulting friction and wear phenomena in steels due to changes in their surface and near-surface properties. READ MORE