Search for dissertations about: "types of laser"
Showing result 1 - 5 of 189 swedish dissertations containing the words types of laser.
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1. Analysis and Monitoring of Laser Welding and Surface Texturing
Abstract : This thesis can be conveniently divided into three sections as follows;Part I. Monitoring of laser welding In laser materials processing there has always been a need for suitable methods to supervise and monitor the processes on-line, to ensure correct production quality or to trigger alarms when failures are detected. READ MORE
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2. Laser welding of aluminium alloys
Abstract : This thesis treats laser welding of aluminium alloys from a practical perspective with elements of mathematical analysis. The theoretical work has in all cases been verified experimentally. The aluminium alloys studied are from the 5xxx and 6xxx groups which are common for example in the automotive industry. READ MORE
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3. Laser welding and cladding : the effects of defects on fatigue behaviour
Abstract : The thesis focuses on weld defects in laser processed materials (for laser welding, laser hybrid arc welding and laser cladding) and their effect on the fatigue life of components. Component properties were studied with particular emphasis on the macro and micro surface geometry, weld defects and clad defects. READ MORE
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4. Airborne laser depth sounding : model development concerning the detection of small objects on the sea bottom
Abstract : Airborne laser depth sounding is a promising technique for rapid and high -density sounding of shallow waters. Depth accuracy analysis for laser depth sounding has almost exclusively dealt with horizontal flat bottoms. The objective of this work is to simulate and compare the influence of different shapes of small objects placed on the sea bottom. READ MORE
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5. Development of Multi-Dimensional Laser Techniques for In-situ Combustion Diagnostics
Abstract : Multi-dimensional, laser-based measurements of quantities important for obtaining a better understanding of combustion processes, particularly of temperature and of species distributions, were performed using laser-induced fluorescence (LIF). The main purpose of the temperature experiments was to investigate the potential of employing a two-line atomic fluorescence technique (TLAF), using indium as the tracer species, in sooting environments such as in diesel engines. READ MORE