Search for dissertations about: "weld integrity"
Found 5 swedish dissertations containing the words weld integrity.
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1. Modeling of structural integrity of aged low alloy steels using non-local mechanics
Abstract : Ageing of low alloy steels affects the structural integrity assessment as it most commonly causes embrittlement and a hardening of the material. This is due to theevolution of the microstructure during operation in the specific application. READ MORE
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2. Monitoring and Control of Robotized Laser Metal-Wire Deposition
Abstract : The thesis gives a number of solutions towards full automation of the promising manufacturing technology Robotized Laser Metal-wire Deposition (RLMwD). RLMwD offers great cost and weight saving potentials in the manufacturing industry. READ MORE
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3. Towards Automation of Non-Destructive Testing of Welds
Abstract : All welding processes can give rise to defects that will weaken the joint and can lead to failure of the welded structure. Because of this, non-destructive testing (NDT) of welds have become increasingly important to ensure the structural integrity when the material becomes thinner and stronger and welds become smaller; all to reduce weight in order to save material and reduce emissions due to lighter constructions. READ MORE
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4. Modelling of Radiographic Testing to Derive a Detection Positioning and Sizing Algorithm for Pore Defects
Abstract : When laser welding light weight materials, e.g. aluminium and titanium based alloys, small sub-millimeter pore defects occasionally forms. Due to their small sizes, less than some 0. READ MORE
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5. Fracture Mechanics in Design and Assessment of Existing Structures: Two Case Studies
Abstract : In the present thesis, the application of fracture mechanics in design and assessment of steel structures has been studied.The first case study concerns a ring-flange connection used in wind turbine towers. The flange is rolled from straight steel profile into a complete ring. READ MORE