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11	Vývoj skenovací strategie laseru pro výrobu mikro-prutové struktury technologií SLM / The developement of SLM laser strategy for lattice structure fabrication Jaroš, Jan January 2020 (has links) Additive technology (AT) is increasingly used to design unique parts, mainly due to the ability to produce complex structures such as lattice structures. However, this also includes the need to modify the process parameters or the production strategy of the AT, which is usually set to produce volume geometry. Using samples corresponding to the geometries of the lattice structures, the exact input values were measured, which were used to design the SLM (Selective laser melting) production process using a contour strategy. Thanks to this, vertical and angled (35.26°) struts with low porosity (up to 0.2 %), low surface roughness and high dimensional accuracy were produced. Porosity was measured on µCT, surface roughness and dimensional accuracy were measured on STL data. The results show that if the parameters of the SLM process are set correctly, it is possible to produce struts with low porosity and surface roughness using different combinations of laser power and scanning speed. The above findings were used in the creation of script that allow the selection of suitable process parameters to produce lattice structures.
12	Systematic Generation of Lack-of-Fusion Defects for Effects of Defects Studies in Laser Powder Bed Fusion AlSi10Mg De Silva Jayasekera, Varthula Janya 28 August 2020 (has links) No description available. Aerospace Materials Materials Science Metallurgy Statistics Additive manufacturing Metal alloys AlSi10Mg Lack of fusion defects Laser Powder Bed Fusion Process Parameter optimization Design of experiments Regression and ANOVA testing
13	Effects of Process Parameters, HIP Processing, Build Orientation, and Defects on S-N Fatigue and Fatigue Crack Growth of Selective Laser Melting-Processed AlSi10Mg Sharpe, Collin 25 January 2022 (has links) No description available. Materials Science AlSi10Mg Additive manufacturing fatigue S-N fatigue Fatigue crack growth mechanical properties mechanical testing defects lack of fusion HIP process parameters build orientation
14	Návrh porézních struktur pro aditivní výrobu technologií selective laser melting / Design of lattice structures for additive manufacturing using Selective Laser Melting technology Vrána, Radek January 2014 (has links) Metal additive technology allows to create objects with complex shape that are very difficult to produce by conventional technologies. An example of such component is a porous structure which is composed of periodical truss cells. This diploma thesis deals with the prediction of the mechanical properties of very small lattice structures made of additive manufacturing technology Selective Laser Melting. Using the proposed test specimens it was found that real dimensions of the trusses varies with size and orientation to the base platform. It was proposed and tested samples for rod tensile test made of SLM. Based on the real information about dimensions and mechanical properties of rods were predicted mechanical properties of lattice structures. A lot of mechanical tests were carried out to obtain the real mechanical properties. Test results and conclusions are described in the thesis.
15	The Effects of Build Orientation on Residual Stresses in AlSi10Mg Laser Powder Bed Fusion Parts Clark, Jared A. January 2019 (has links) No description available. Engineering Mechanical Engineering Metallurgy Additive Manufacturing AlSi10Mg Autodesk Autodesk Netfabb Netfabb Metal Aluminum 3D Scanning 3D Printing Residual Stress Orientation Optimization Laser Power Bed Fusion Power Bed Fusion Selective Laser Melting SLM LPBF
16	Snížení nákladů na výrobu odlitků ze slitin hliníku / Costs reduction in production of Al-alloy castings Nováková, Lucie January 2010 (has links) This thesis deals with solving the most serious internal defects in castings made of aluminum alloys which are cast in sand molds in Slévárna a modelárna Nové Ransko Ltd. The problem solving contains a description of the problematic castings with the investigation of the structure and phases and subsequent detailed analysis of their production. The Author of this thesis also examines the influence of Fe and Mn on a possible formation of the internal porosity with the help of test meltings with the evaluation of the internal structural change. The Author’s design solution is a close checking of chemical composition with regard to the ratio Mn / Fe present in the alloy, the purchase of Foundry Degassing Unit to reduce gassiness of melted metals and better control of gassiness with the help of the appropriate equipment for the density Dichte index.

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