Sökning: "Contact electrification"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden Contact electrification.

  1. 1. Modelling and Simulation of Gearset Behavior : Effects of Manufacturing Errors and Electrification

    Författare :Rikard Hjelm; Maskinelement; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrification; gears; LTCA; tip contact; pitch error; profile slope error; transmission error; tolerance; scrapping; lubrication; TEHL; optimization;

    Sammanfattning : Due to electrification, new demands are imposed on gears regarding e.g., quality, noise, lubrication, and gear ratio.Therefore, a better understanding of gearset meshing and operation is needed. LÄS MER

  3. 2. GENOME2QUNOME : Interfacing Molecules with Nanomaterials

    Författare :Pritam Kumar Panda; Rajeev Ahuja; Yogendra Kumar Mishra; Helder Almeida Santos; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Electronic transport; Contact electrification; Nanomaterials; Zinc Oxide; Tetrapods; 2D-materials; Density functional theory; Non-equilibrium Green s function; Molecular docking; Molecular dynamics simulation; Materialvetenskap; Materials Science; Theoretical Physics; Teoretisk fysik; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

    Sammanfattning : The advent of technological furtherance in the biomedical sector and the renaissance of interdisciplinary science enable us to comprehend human lifestyle, and diseases at molecular and nanoscale levels. Lacking a shared theoretical foundation and terminological lexicon between various scientific domains might impede efforts to incorporate biological principles into nanoscience. LÄS MER

  4. 3. Static electrification of teflon by metals

    Författare :Anders Wåhlin; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The electrification of a system consisting of a metal and polytetrafluoro-ethylene (Teflon) has been investigated under relative motion. First, the electrification charge received by the insulator was measured when velocity, radius of curvature of the metal electrode and normal force were varied. LÄS MER

  5. 4. Insulator charging by contact with metals

    Författare :Frank Nordhage; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : In spite of the fact that charge transfer is one of the oldest physical phenomena known, the basic mechanisms involved are not yet quite understood. For experimental investigations of the charge transfer to insulators it is still informative to scrutinize electrification systems consisting of as simple components as possible. LÄS MER

  7. 5. Thermal non-coking coal preparation by triboelectric dry process

    Författare :Ranjan Dwari; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Sammanfattning : Coal is the single largest fossil fuel used world-wide and accounts for more than 60% of the total commercial energy consumed. Between 60 to 80% of this coal is used for electric power generation and most of which through a system of pulverised coal combustion. LÄS MER