Sökning: "micropitting"

Visar resultat 1 - 5 av 6 uppsatser innehållade ordet micropitting.

  1. 1. On the friction and failure mechanisms of bearing and gear surfaces lubricated by a novel nanoadditive in highly stressed operating conditions

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Diego Manuel Chamorro Ruz; [2022]
    Nyckelord :micropitting; nanoadditive; gear; bearing; tribology; rolling contact fatigue;

    Sammanfattning : Obtaining an enhanced lifespan for mechanical transmissions has become a challenge in diverse application sectors. Micropitting as a contact fatigue mechanism has seriously jeopardized the well-being of rolling-sliding elements present for instance in gearboxes. LÄS MER

  3. 2. Investigation of micropitting and wear in rolling/sliding contacts operating under boundary lubrication conditions

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Mushfiq Hasan; [2021]
    Nyckelord :micropitting; wear; rolling contact fatigue; surface treatment; boundary lubrication; gear; triboconditioning;

    Sammanfattning : .... LÄS MER

  4. 3. SUSTAINABLE LUBRICATION FOR FUTURE TRANSMISSIONS : Micropitting performance of Glycerol-based lubricants

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Zapata Tamayo Juan Guillermo; [2021]
    Nyckelord :micropitting; mild sliding wear; surface coating; diamond-like carbon DLC; glycerol-based lubrication; green lubricant; rolling contact fatigue; rolling-sliding;

    Sammanfattning : Achieving sustainable lubrication by using environmentally friendly formulated lubricants has became an essential component of the transition process from fossil-powered vehicles to electrified transportation. Mixtures, or aqueous solutions of molecules such as polyhydroxy alcohols, and glycols usually known as green lubricants make it possible to achieve low friction coefficients under different lubrication conditions, which constitutes a potential alternative to improve the tribological performance of moving parts in automotive systems, at the same time that the environmental requirements are satisfied. LÄS MER

  5. 4. Sensors for intelligent and reliable components

    Magister-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Pontus Lundman; [2020]
    Nyckelord :Wind turbine; Gearbox; Sensor; Condition monitoring; Cyber-physical system; Vindkraftverk; Växellåda; Sensor; Tillståndsövervakning; Cyberfysiskt system;

    Sammanfattning : One way to tackle the climate change society is facing today is through the change to renewable energy sources, such as wind power. Today, a trend when it comes to technology is that products are evolving into becoming more cyber-physical systems (CPS) by integrating functions realized with mechanics, control and communication. LÄS MER

  7. 5. Influence of ANS Triboconditioning on friction and fatigue in rolling contact configurations

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Björn Hedmark; Per Wallgren; [2019]
    Nyckelord :Tribology; friction; fatigue; micropitting; surface engineering; twin-disc; triboconditioning; LTU;

    Sammanfattning : The automotive industry is constantly being challenged by customers and authorities to enhance the efficiency of the internal combustion engine (ICE) in order to achieve improved fuel consumption and reduced emissions. There are several interfaces within the design of an ICE that causes frictional losses, one of them is the valvetrain. LÄS MER