Essays about: "Weld stresses"

Showing result 11 - 15 of 23 essays containing the words Weld stresses.

  1. 11. Assessment of creep damage in Fe-Ni-Cr alloys

    University essay from KTH/Hållfasthetslära (Avd.)

    Author : Frans Sorsh; [2019]
    Keywords : ;

    Abstract : It is only a matter of time before components working in high temperature environments fail due to creep. Design for creep is therefore of vital importance to maximize the lifetime of components and reduce costs that may arise from maintenance and replacement of components. READ MORE

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

    University essay from KTH/Hållfasthetslära

    Author : Elaheh Etemadi; [2019]
    Keywords : ;

    Abstract : 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. READ MORE

  4. 13. Low Cycle Fatigue Weld Optimization using Chaboche Material Model

    University essay from KTH/Hållfasthetslära (Avd.)

    Author : Louise Rosenblad; Filippa Hallbäck; [2018]
    Keywords : ;

    Abstract : In this master thesis a method for optimizing welds has been investigated. The method was developed by the use of a finite element (FE)-model of a silencer. The silencer is exposed to both dynamic and thermal loads. Focus has been on using topology optimization for the welds. READ MORE

  5. 14. Residual stresses in Ti-6Al-4V from low energy laser repair welding

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Peter Ericson; [2018]
    Keywords : Micro laser welding; Low energy welding; Ti-6Al-4V; Ti64; Residual stress; Response Surface Methodology; Repair welding; Welding simulation; Mikrolasersvetsning; Lågenergetisk svetsning; Lågenergisvets; Ti-6Al-4V; Ti64; Restspänningar; Response Surface Methodology; Reparationssvets; Svetssimulering;

    Abstract : Millimeterstora och svårupptäckta defekter kan uppstå internt i stora och komplexa gjutgods av Ti-6Al-4V, ibland går dessa oupptäckta tills detaljen genomgått mekanisk bearbetning och en stor kostnad redan har gått in i den. Dessa defekter och andra industriella olyckshändelser leder till ett behov av additiva reparationsmetoder där den för tillfället rådande metoden är TIG-svetsning. READ MORE

  6. 15. Additive weld manufacturing and material properties effect on structural margins

    University essay from KTH/Lättkonstruktioner

    Author : Daniel Arvidsson; [2018]
    Keywords : ;

    Abstract : the FE analyses. Traditionally all parts are modeled with isotropic base material. Analyses are made on a part of the nozzle which includes both a butt weld and metal deposition and which is an interface to another part causing loads that has to be sustained by the weld and the MD. READ MORE