Sökning: "tribology"

Visar resultat 1 - 5 av 225 avhandlingar innehållade ordet tribology.

  1. 1. Hot forming tribology galling of tools and associated problems

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Leonardo Pelcastre; Luleå tekniska universitet.; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement; Centre - Centre for High Performance Steel CHS ; Centrumbildning - Centrum för högpresterande stål CHS ;

    Sammanfattning : In recent years, the use of ultra high-strength steels (UHSS) as structural reinforcements and in energy-absorbing systems in automobiles has increased rapidly; mainly in view of their favourable strength to weight ratios. However, due to their high strength, the formability of UHSS is poor, thus complex-shaped UHSS components are invariably produced through hot-metal forming processes. LÄS MER

  2. 2. Tribology of elastomers

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Mohammad Mofidi; Luleå tekniska universitet.; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Sammanfattning : In this work, the tribological behaviour of different sealing elastomers has been studied. The influence of aging of a sealing elastomer in different lubricants on its tribological behaviour has been investigated. Tribological behaviour of sealing elastomers in dry condition and the mechanisms occurring in run-in period have been studied. LÄS MER

  3. 3. Wet clutch tribology : friction characteristics in all-wheel drive differentials

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Rikard Mäki; [2003]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : In recent past, several electronically controlled automotive transmission systems, where wet clutches are used as intelligent differentials, have emerged on the market. These applications generally impose high stresses on the transmission fluids. LÄS MER

  4. 4. Wet clutch tribology friction characteristics in limited slip differentials

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Rikard Mäki; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : In recent years, electronically controlled automotive transmission systems, where wet clutches are used as intelligent differentials, have appeared in the market. These applications impose great demands on the transmission fluids and friction materials used as well as on controllability and vibration preventive (anti-shudder) properties of the clutch systems. LÄS MER

  5. 5. Railway Open System Tribology

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Yezhe Lyu; KTH.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wheel; Rail; Brake; Environmental conditions; Tribology; Noise; Particle; Hjul; Räl; Broms; Miljöförhållanden; Tribologi; Ljud; Partiklar; Machine Design; Maskinkonstruktion;

    Sammanfattning : Tribology in the railway system is of increasing interest in the new railway era due to the demand for higher speed and load capacity. Since railway vehicles operate in an open environment, their performance depends greatly on temperature, humidity and natural and artificial contaminants. LÄS MER