Search for dissertations about: "Welds"
Showing result 1 - 5 of 68 swedish dissertations containing the word Welds.
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1. Mechanical Properties of Welds at Creep Activation Temperatures
Abstract : Welds in materials intended for service at temperatures above the creep activation temperature often develop damage before the base metal. The weld is a discontinuity in the material and stresses and strains often accumulate in the weld. Knowledge of the properties of the weld is essential to the safe operation of the component containing the weld. READ MORE
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2. A Framework for optimised welding of fatigue loaded structures : Applied to gas metal arc welding of fillet welds
Abstract : Welding is a key process for heavy steel structures, but it is also a weak link in the structure since fatigue fractures in welds are a common cause of failure. This thesis proposes several changes in order to improve the fatigue properties in acost effective way, enabling reduced weight and reduced cost of welded structures. READ MORE
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3. The Morphology of Laser Arc Hybrid Welds
Abstract : This thesis is about formation of surface imperfections formed in welding when using the manufacturing methods of laser welding and laser arc hybrid welding. In hybrid welding a traditional arc welding source and a laser share the same melt pool, making the process even more complex. READ MORE
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4. 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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5. On the formation and structure of explosive welds
Abstract : .... READ MORE