Search for dissertations about: "Butt joint"
Showing result 1 - 5 of 13 swedish dissertations containing the words Butt joint.
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1. Monitoring and control of laser beam butt joint welding
Abstract : Laser beam welding is one important technology in automated production. It has several advantages, such as the ability to produce deep and narrow welds giving limited heat induced deformations. The laser beam welding process is however sensitive to how the high power laser is positioned with regards to the joint position. READ MORE
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2. Novel beam shaping and computer vision methods for laser beam welding
Abstract : Laser beam welding has been widely applied in different industrial sectors due to its unique advantages. However, there are still challenges, such as beam positioning in T-joint welding, and gap bridging in butt joint welding,especially in the case of varying gap width along a joint. READ MORE
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3. Residual stress in a T-butt joint weld : cylinder versus plane plate geometry
Abstract : The welding process introduces residual stress originating from the heating, melting and cooling of the material. From the point of view of fatigue and stress corrosion cracking, the weld residual stress perpendicular to the weld axis is of particular interest. READ MORE
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4. Optical detection of joint position in zero gap laser beam welding
Abstract : This thesis presents an experimental study on how to track zero gaps between metal sheets to be joined by laser beam butt welding. Automated laser beam welding is gaining interest due to its ability to produce narrow and deep welds giving limited heat input and therefore less distortions compared to other processes, such as arc-welding. READ MORE
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5. Deformations and stresses in butt-welding of plates : numerical simulation and experimental verification
Abstract : Deformation and stresses in butt-welding of plates were studied. The work includes numerical simulation and experimental verification. The simulations were performed by use of the finite element method. Temperature dependence of material properties and phase transformations were considered. READ MORE