Sökning: "Pore Defects"
Visar resultat 1 - 5 av 26 avhandlingar innehållade orden Pore Defects.
1. Detection and 3-D positioning of small defects using digital radiography, 3-D point reconstruction, and tracking
Sammanfattning : The weight and quality concerned aero industry is constantly trying to decrease the excess material in their components. With decreased weight the fuel consumption can be lowered and the negative environmental effects from aviation decreased. LÄS MER
2. Structural study of nano-structured materials: electron crystallography approaches
Sammanfattning : The structural analysis serves as a bridge to link the structure of materials to their properties. Revealing the structure details allows a better understanding on the growth mechanisms and properties of materials, and a further designed synthesis of functional materials. LÄS MER
3. Laser welding and cladding : the effects of defects on fatigue behaviour
Sammanfattning : 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. LÄS MER
4. Modelling of Radiographic Testing to Derive a Detection Positioning and Sizing Algorithm for Pore Defects
Sammanfattning : 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. LÄS MER
5. Mechanical Properties, Microstructures and Defects of Tool Steels Fabricated by Additive Manufacturing
Sammanfattning : Additive Manufacturing (AM) has been gaining significant interest in the manufacturing of metallic materials in the recent years. From a techno-commercial standpoint, tooling is one of the areas with low production volumes but very high demands on part performance and complexity in design, all of which are characteristic for metal AM. LÄS MER