Sökning: "shot peening"

Visar resultat 6 - 9 av 9 uppsatser innehållade orden shot peening.

  1. 6. CORROSION-FATIGUE TESTING ON STEEL GRADES WITH DIFFERENT HEAT AND SURFACE TREATMENTS USED IN ROCK-DRILLING APPLICATIONS

    Master-uppsats, KTH/Materialvetenskap

    Författare :Luis Miguel Béjar; [2016]
    Nyckelord :corrosion fatigue; crack; rotating-bending; S-N curve; staircase method; fatigue strength; shot peening; case hardening; through hardening; fatigue; corrosion; rock drill; atlas copco; steel;

    Sammanfattning : Corrosion fatigue is a common failure mechanism in rock drilling components and many othermechanical parts subjected to cyclic loads in corrosive environments. A crucial part in the design ofsuch components resides in the selection of the right materials for the application, which ideallyinvolves testing and comparison of their performance under working conditions. LÄS MER

  3. 7. The Influence of Hardness and Retained Austenite on the Fatigue Limit after Shot Peening

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för kemi - Ångström

    Författare :Erik Björklund; [2014]
    Nyckelord :shot peening;

    Sammanfattning : This thesis was performed at Scania CV AB and aimed to optimize the effect of shot peening in order to increase the bending fatigue limit of planetary gears. In this project three parameters affecting the performance of the shot peening were examined in more detail, specifically the hardness of the shot peening media, the hardness of the material and the amount retained austenite. LÄS MER

  4. 8. Experimental investigation of the strain rate dependence of SS2506 gear steel

    Master-uppsats, KTH/Materialvetenskap

    Författare :Karin Ekström; [2013]
    Nyckelord :;

    Sammanfattning : hot peening is a surface treatment used to increase the fatigue strength of metallic components, for example gears, and it is of great interest to be able to model and simulate the effect of this treatment in order to save time and money. An important parameter that has to be considered when modeling the peening situation is the strain rate dependence of the target material. LÄS MER

  5. 9. Undersökning av svetsförband med avseende på svetsgeometri, diskontinuiteter och blästring med stålkulor

    Uppsats för yrkesexamina på grundnivå, Institutionen för konstruktions- och produktionsteknik

    Författare :Stefan Bergdahl; [2006]
    Nyckelord :Svetsteknologi; utmattningshållfatshet;

    Sammanfattning : Breakdowns of welded structures are usually a consequence of fatigue loading. Fatigue fractures are commonly initiated in the region close to the weld toe but can also initiate from the weld root and from discontinuities inside the weld. LÄS MER