Sökning: "Rolling element bearings"

Visar resultat 6 - 10 av 15 uppsatser innehållade orden Rolling element bearings.

  1. 6. Bearing condition monitoring : An investigation on the possibility of monitoring aging of the lubricating grease by means of acoustic emission and temperature.

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

    Författare :Dilesh Raj Shrestha; [2021]
    Nyckelord :Acoustic Emission; Fourier Transform; Infrared Spectroscopy; Condition Monitoring; Total Acidic Number; Fast Fourier Transform; Scanning Electron Microscopy; Rheology; Bleed Oil; Grease degradation;

    Sammanfattning : Grease is among the most widely used lubricants in rolling element bearings. Proper understanding of the effect of lubrication due to grease aging can provide a significant increase in the life of the engineering systems. However, at present, there is no sufficient understanding of the grease aging effect in rolling elements bearing. LÄS MER

  3. 7. Bearings in Wave Energy Converters

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

    Författare :JONATAN ESPING; [2021]
    Nyckelord :Wave energy converter; bearings; tribology; Vågkraftsgenerator; lager; tribologi;

    Sammanfattning : Wave energy and wave energy converters is a fast rapidly developing field of research and energy harvesting. In recent years, more and more designs have seen operational success, and more and more are in development. LÄS MER

  4. 8. Lagring av gaffelrörelse

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

    Författare :Felix Kuiper; Hampus Gunnarsson; [2020]
    Nyckelord :;

    Sammanfattning : When a reach truck moves its load sideways a sway appears in the mast. The objective of this thesis is to reduce this sway and thereby improve the load cycle time. This was done theoretically by designing new bearings for the fork carriage. Improved friction characteristics, especially lowered static friction, contributes to a lowered sway. LÄS MER

  5. 9. Fretting in Wind Power Pitch Bearings: Micro-Slip Experiments and Bearing Test Rig Design

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

    Författare :Román De La Presilla; [2020]
    Nyckelord :Fretting; Pitch Bearing; Lubrication.; Fretting; Rotorbladslager; Smörjning;

    Sammanfattning : Wind power is the fastest-growing form of green energy production in Europe, today accounting for 15% of the total power demand with 100.000 turbines installed. LÄS MER

  7. 10. Bearing Diagnosis Using Fault Signal Enhancing Teqniques and Data-driven Classification

    Master-uppsats, Linköpings universitet/Fordonssystem

    Författare :Benjamin Lembke; [2019]
    Nyckelord :Bearing diagnosis; rolling element bearings; predictive maintenance; signal processing; fault detection; gearbox diagnosis; support vector machine; svm; binary classification; one class classification; machine learning; feldetektion; diagnos; feldiagnos; växellåda; signalbehandling; maskininlärning;

    Sammanfattning : Rolling element bearings are a vital part in many rotating machinery, including vehicles. A defective bearing can be a symptom of other problems in the machinery and is due to a high failure rate. Early detection of bearing defects can therefore help to prevent malfunction which ultimately could lead to a total collapse. LÄS MER