Essays about: "Residual Stresses"

Showing result 16 - 20 of 60 essays containing the words Residual Stresses.

1. 16. FE-model for prediction of welding distortions in components made of preformed stainless steel sheets

   University essay from KTH/Hållfasthetslära

   Author : Tom Glansholm; [2020]
   Keywords : Welding simulation; distortions; Ferritic stainless steel; EN1.4509; FEM; Solid mechanics; Residual stresses; Svetssimulering; deformationer; restspänningar; Ferritiskt rostfritt stål; EN1.4509; Finita elementmetoden; Hållfasthetslära;

   Abstract : This master thesis was carried out at Scania CV AB. The focus for this thesis is the prediction of welding distortions that can cause problems in the manufacturing process of Scania's after-treatment system. The after-treatment system is mainly assembled by sheet metal plates of the ferritic stainless steel EN 1.4509. READ MORE

3. 17. Stress-free titanium-based thin films for inner ear microphones : The last missing part of a technology for totally implantable hearing aid implants

   University essay from Linköpings universitet/Tunnfilmsfysik

   Author : Dina Ehsan; [2020]
   Keywords : Stress-free; thin films; in situ; titanium; compressive; tensile;

   Abstract : An implantable hearing aid device is being developed by a project group which is part of an EU initiative. This device contains a diaphragm consisting of a submicron thick freestanding titanium film, which should be free of internal stresses. READ MORE

4. 18. The effect of printing parameters on the deformation and microstructure of Inconel 718 : A study in pulsed laser and powder based directed energy deposition additive manufacturing

   University essay from KTH/Materialvetenskap

   Author : Elias Repper; [2020]
   Keywords : Laser; Additive Manufacturing; Metal; Deposition; Quasi-continuous-wave; Pulsed; Ni-base superalloy; Laves; Deformation; Residual stresses;

   Abstract : Additive manufacturing has the power to redefine how we create components. In order to minimize removal of printed material, deformation must be kept a minimum. When deposition rate is increased during directed energy deposition so is the power requirement for melting the feedstock. READ MORE

5. 19. Development of a Method to Measure Residual Stresses in Cast Components with Complex Geometries

   University essay from KTH/Materialvetenskap

   Author : Yang Yang; [2020]
   Keywords : Residual Stresses; Cast Iron; Engine Components; XRD; Ultrasonic; Cutting;

   Abstract : Cast iron, taking the advantages of the advanced castability forming components of complex geometries and favorable mechanical properties, is employed in engine components in truck industries. Compacted graphite iron (CGI) integrates both merits of lamellar graphite iron (LGI) and spheroidal graphite iron (SGI) such as good machinability and high thermal conductivity from LGI, high ultimate tensile strength (UTS), good fatigue resistance, high elastic modulus, and high ductility from SGI, thus is now becoming a competitive alternative of traditional LGI in cylinder blocks and heads. READ MORE

6. 20. Optimization of case-hardening depth for small gears

   University essay from KTH/Hållfasthetslära (Avd.)

   Author : Johannes Nyman; [2019]
   Keywords : ;

   Abstract : The optimization of case hardening depth for small gears was investigated with the use of Abaqus and the subroutine DANTE to simulate the formation of the microstructural phases, resulting in residual stresses and increased hardness. This was done with a step wise increment of the carburizing time, resulting in a theoretical maximum for compressive residual stresses at the surface. READ MORE