Sökning: "Real friction"

Visar resultat 21 - 25 av 78 avhandlingar innehållade orden Real friction.

  1. 21. Modeling and Diagnosis of Friction and Wear in Industrial Robots

    Författare :André Carvalho Bittencourt; Svante Gunnarsson; Mikael Norrlöf; Andrew Starr; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : High availability and low operational costs are critical for industrial systems. While industrial equipments are designed to endure several years of uninterrupted operation, their behavior and performance will eventually deteriorate over time. LÄS MER

  3. 22. Self Lubrication on the Atomic Scale : Design, Synthesis and Evaluation of Coatings

    Författare :Mattias Lindquist; Sture Hogmark; Urban Wiklund; Ian Hutchings; Uppsala universitet; []
    Nyckelord :Materials science; Tribology; low friction; PVD; sputtering; nanocomposite; Materialvetenskap;

    Sammanfattning : In this thesis a new design concept of tribologically active coatings aimed for low friction applications, have been explored. Materials modeled by ab initio DFT calculations were realized through deposition of carbide and nanocomposite coatings by DC-magnetron sputtering. LÄS MER

  4. 23. Tribology of stamping : the influence of designed steel sheet surface topography on friction

    Författare :Daniel Wiklund; Högskolan i Halmstad; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steel sheet; tribology; surface topography; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

    Sammanfattning : Tribology is the science of friction, wear, and lubrication; the interaction of surfaces in relative motion. The tribological conditions in sheet metal forming influences the flow of material in forming operations, the strain distributions of sheet material, extent of wear, and thereby the quality of products. LÄS MER

  5. 24. The HCCI Engine – High Load Performance and Control Aspects

    Författare :Jan-Ola Olsson; Förbränningsmotorer; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System Identification; Motors and propulsion systems; Motorer; framdrivningssystem; Real Time; Black-Box Model; LQG; Closed-Loop Control; Internal Combustion Engine; Emissions; EGR; Efficiency; HCCI; Homogeneous Charge Compression Ignition;

    Sammanfattning : Current combustion engines provide excellent performance for vehicle propulsion and power generation. However, recent demands from society ask for higher efficiencies and lower emissions. These requirements are hard to meet with current technology and call for new solutions. LÄS MER

  7. 25. Efficient Winter Road Maintenance : A Study of Technical and Contractual Issues

    Författare :Adel Abdi; Hans Lind; Björn Birgisson; Lars Silver; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; climate; road climate and weather; road surface roughness; road friction; winter tyre; winter maintenance tools; RWIS; weather station; winter maintenance; contract type; road maintenance contract; winter maintenance contract; partnering; strategic alliance; public procurement; tender; incentives; bundling services; payment mechanism; remuneration models; Civil and Architectural Engineering; Byggvetenskap;

    Sammanfattning : Since ancient times, roads have tied people and cultures together. Roads have been createdwith the aim of facilitating trade and cultural exchange among different regions in the world. LÄS MER