Sökning: "Running in"

Visar resultat 1 - 5 av 787 avhandlingar innehållade orden Running in.

  1. 1. On the running-in of gears

    Författare :Sören Sjöberg; Ulf Olofsson; Anders Flodin; KTH; []
    Nyckelord :gears; gear manufacturing; running-in; surface topography; contact area ratio; manganese phosphate; Mechanical engineering; Maskinteknik;

    Sammanfattning : The general trend in gear industry, today, is an increased focus on gear transmission efficiency. Gear transmission efficiency losses arise from loaded and unloaded gear contacts, seals, lubricant and bearings. One way of minimising the losses is to lower the lubricant viscosity. This will reduce the speed dependent losses. LÄS MER

  3. 2. Monitoring of wear in elasto- hydrodynamic lubricated contacts : Running-in and failure propagation

    Författare :Stephan Schnabel; Lars-Erik Stacke; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : Elasto-hydrodynamic lubricated (EHL) contacts can be found in various machine elements or systems, like rolling element bearings, cam followers or gear transmissions. The service life of these elements and systems are depending to some extent on the performance of EHL contacts. LÄS MER

  4. 3. Running-in of gears - surface and efficiency transformation

    Författare :Mario Sosa; Ulf Olofsson; Stefan Björklund; Ulf Sellgren; Jorge Seabra; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; running-in; surface transformation; efficiency; gears; ground; superfinished; Machine Design; Maskinkonstruktion;

    Sammanfattning : With ever shorter development times and market demands on overall system performance such as efficiency, reliability and low maintenance, accurate predictive tools are necessary and gear drives prove to be no exception. All these characteristics have an impact on a process which has remained a riddle: running-in. LÄS MER

  5. 4. Energy Consumption and Running Time for Trains : modelling of running resistance and driver behaviour based on full scale testing

    Författare :Piotr Lukaszewicz; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy consumption; Running time; running resistance; driver behaviour; freight; train; energy coasting method; aerodynamic drag; driver model; degree of coasting; slippage; wind; Energy saving; braking ratio; powering ratio; full scale testing; Vehicle engineering; Farkostteknik;

    Sammanfattning : The accuracy in determined energy consumption and runningtime of trains, by means of computer simulation, is dependent upon the various models used. This thesis aims at developing validated models of running resistance, train and of a generaldriver, all based on full scale testing. LÄS MER

  7. 5. ”It’s in the between” : Inter-Project Organising in Project Ecologies

    Författare :Susanna Hedborg; Tina Karrbom Gustavsson; Jonas Söderlund; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; project ecologies; organisational routines; space interdependencies; self-organising; urban development district; construction project; construction client; Business Studies; Företagsekonomi;

    Sammanfattning : The word project is used to describe everything from mundane tasks tomajor government-initiated structural changes. Projects are also thefocus of a growing research field that seeks to understand how society isorganised. LÄS MER