Sökning: "Cleavage fracture"

Hittade 4 uppsatser innehållade orden Cleavage fracture.

  1. 1. Impact of Residual Stress on the Warm Pre-Stressing Effect

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Emil Danielsson; [2023]
    Nyckelord :Warm Pre-Stressing effect; Residual stress; Cleavage fracture; Ferritic Steel; Fracture mechanics; Varm förspänning; Restspänningar; Klyvbrott; Brottmekanik; Ferritiskt stål;

    Sammanfattning : Irradiation of a reactor pressure vessel (RPV) causes a shift of the ductile to brittle transition region towards higher temperature regions. In the event of a pressurized thermal shock (PTS), where the temperature drops drastically, the ductile to brittle transition region might be entered for irradiated ferritic steel. LÄS MER

  3. 2. Examination of a Damaged Slitting Knife using Scanning Electron Microscopy and Finite Element Simulations

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Love Öman; [2021]
    Nyckelord :slitting; slitting knives; damage; sem;

    Sammanfattning : At voestalpine Precision Strip AB, the slitting process is used frequently. Slitting is a commonly applied manufacturing technique during sheet metal processing that aims to split large coils of sheet metal into narrower widths. LÄS MER

  4. 3. Interaction between weld residualstresses and warm pre-stressing

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Elaheh Etemadi; [2019]
    Nyckelord :;

    Sammanfattning : Cleavage fracture is a catastrophic phenomenon as it is a sudden structural collapse occurring to structures made of insufficiently ductile steels working at lower temperatures. In this study, the focus is on the material used in reactor pressure vessels (RPV) in nuclear power plants. LÄS MER

  5. 4. Cleavage fracture toughness at varying specimen size and crack depth

    Master-uppsats, KTH/Hållfasthetslära (Avd.)

    Författare :Håkan Jernberg; [2019]
    Nyckelord :;

    Sammanfattning : Cleavage fracture is one of the most severe failure modes in low alloy ferritic steel structures and the fracture toughness is strongly dependent on the size of the specimen, crack depth and temperature. This thesis investigates how the fracture toughness is affected under conditions that relates to size and constraint effects through a fracture mechanical experiment test series. LÄS MER