Sökning: "Staffan Jacobson"

Visar resultat 1 - 5 av 25 avhandlingar innehållade orden Staffan Jacobson.

  1. 1. Workpiece steels protecting cutting tools from wear : A study of the effects of alloying elements on material transfer and coating damage mechanisms

    Författare :Toshiharu Aiso; Staffan Jacobson; Urban Wiklund; Staffan Söderberg; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Metal cutting; Steel; Cutting tools; Transfer; Coating; Sliding; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Sammanfattning : The vision of this thesis is to improve the machinability of workpiece steels. Workpiece material frequently transfers to the cutting tools during machining, and the transfer layers then forming on the tools may give both good and bad effects on machining performance and tool life. LÄS MER

  2. 2. Den spraymålade bilden. Graffitimåleriet som bildform, konströrelse och läroprocess

    Författare :Staffan Jacobson; []
    Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; throw-up; underground; tag; subway; subculture; style; spray; piece; picture; painting; ornament; name; letter; hip hop; graffiti; characters; calligraphy; Aerosol; art; wild style; youth.; Konsthistoria; Art history;

    Sammanfattning : The introduction suggests a model for defining and categorising different types of graffiti, and the term TTP (Tags/Throw-ups/Pieces) is presented. Chapter I relates the body of research up to the present day and proposes a comprehensive interpretation, based partly on English and German subculture- and socialisation theories. LÄS MER

  3. 3. Model studies on cutting, grinding and abrasive wear of metals

    Författare :Staffan Jacobson; Uppsala universitet; []

    Sammanfattning : .... LÄS MER

  4. 4. Particle emissions from car brakes : The influence of contact conditions on the pad-to-rotor interface

    Författare :Mattia Alemani; Ulf Olofsson; Jens Wahlström; Anders Söderberg; Staffan Jacobson; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Car brakes emissions; transition temperature; working conditions; environmental design; pin-on-disc; Bilbromsutsläpp; övergångstemperatur; arbetsförhållanden; miljödesign; pinne-på-skiva; Machine Design; Maskinkonstruktion;

    Sammanfattning : Due to their adverse health effects emissions have been regulated for over three decades. Brake wear particulate matter is the most important non-exhaust source, however current knowledge is mainly limited to observational studies. LÄS MER

  5. 5. Microengineered CVD Diamond Surfaces : Tribology and Applications

    Författare :Joakim Andersson; Staffan Jacobson; Arto Alahelisten; Uppsala universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Materials science; Diamond; DLC; Tribology; Friction; Environment; Microengineering; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : Recent developments in thin film synthesis of diamond have facilitated a host of new technical applications. These are motivated by the many attractive properties of diamond, for example high hardness, chemical inertness, transparency and heat conductivity. Unfortunately, these properties also make it difficult to fashion complex geometries. LÄS MER