Sökning: "residual stresses"

Visar resultat 16 - 20 av 180 avhandlingar innehållade orden residual stresses.

  1. 16. The Influence of Residual Stresses on Constant and Variable Amplitude Fatigue Behaviour of Steel

    Författare :Kamellia Dalaei; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Steel; Relaxation; Residual stress; Variable Amplitude; Shot peening; Fatigue;

    Sammanfattning : Subjected to dynamic loading, truck components are exposed to variable amplitude fatigue. The fatigue life of components is to a large degree controlled by the behaviour of the surface zones. LÄS MER

  3. 17. Residual Stress Distributions in Additively Manufactured Parts : Effect of Build Orientation

    Författare :Prabhat Pant; Ru Lin Peng; Johan Moverare; Kjell Simonsson; Jonathan Almer; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive manufacturing; Residual stress; Neutron diffraction; FEM;

    Sammanfattning : Additive manufacturing (AM) of parts using a layer by layer approach has seen a rapid increase in application for production of net shape or near-net shape complex parts, especially in the field of aerospace, automotive, etc. Due to the superiority of manufacturing complex shapes with ease in comparison to the conventional methods, interest in these kinds of processes has increased. LÄS MER

  4. 18. Residual Stresses and Fatigue of Shot Peened Cast Iron

    Författare :Mattias Lundberg; Lin Peng Ru; Sten Johansson; Taina Vuoristo; Daniel Bäckström; Maqsood Ahmad; Jens Bergström; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The complex geometry of cylinder head in heavy-duty diesel engine makes grey cast iron or compact graphite iron a perfect material choice due to its castability, thermal conductivity and damping capacity. To increase the efficiency of the engine, the fatigue property of the material needs to be improved. LÄS MER

  5. 19. Residual Stresses and Fatigue in a Duplex Stainless Steel

    Författare :Johan Moverare; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Duplex stainless steels, consisting of approximately equal amounts of austenite and ferrite, often combine the best features of austenitic and ferritic stainless steels. They generally have good mechanical properties, including high strength and ductility, and the corrosion resistance is often better than conventional austenitic grades. LÄS MER

  7. 20. Residual Stress Analysis and Fatigue Assessment of Welded Steel Structures

    Författare :Zuheir Barsoum; Jack Samuelsson; Dan Zenkert; Stephen Maddox; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatigue failure; welding; weld defects; welded joints; stress concentration; residual stress; linear elastic fracture mechanics; welding simulation; finite element analysis; fatigue crack growth.; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : This doctoral thesis is concerned with fatigue life of welded structures. Several topics related to fatigue of welded structures are treated such as; weld defects and their influence on fatigue performance of welded structures, fatigue life prediction using LEFM (Linear Elastic Fracture Mechanics), fatigue testing, welding simulation, residual stress prediction and measurement and their influence on fatigue life. LÄS MER