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61	Analýza přesnosti výroby lamel formy pneumatiky vyráběných SLM technologií / Analysis of SLM production accuracy of sipes for tire molds Tomeš, Jan January 2016 (has links) The first part of the diploma thesis is focused on the analysis and evaluation of the current production of sipes by two SLM devices PXL and M2 Cusing, produced by Phenix Systems and Concept Laser companies. The samples of both machines went through the same manufacturing process and the same process of measurement and evaluation, in order to carry out comparison between individual machines. Geometric accuracy, surface roughness, mechanical properties, and material structure of the samples have been compared. For the sipes it was necessary to create a digital evaluation methodology of geometry. In the second part of the thesis, process parameters are selected on the basis of research and further their influence on surface roughness of manufactured sipes is analyzed.
62	Mechanical characterization of functionally graded M300 maraging steel cellular structures Sampson, Bradley Jay 08 December 2023 (has links) (PDF) Traditional methods for increasing the energy absorption of a structure involve using a stronger material or increasing the volume of the structure, resulting in a higher cost or additional weight. Additive manufacturing (AM) can be used to maximize the energy absorption of materials with the ability to create complex geometries such as cellular structures. Previous work has shown that the energy absorption of additively manufactured parts can be improved through functionally graded cellular structures; however, this strategy has not been applied to ultra-high strength steel materials. This work characterizes the effect of multiple functional-grading strategies (e.g. uniform, rod-graded, size-graded) on the energy absorption to weight ratio of laser powder bed fusion (L-PBF) produced M300 maraging steel lattice structures. Each structure is designed with the same average relative density to analyze the structures on an equal mass basis, to evaluate manufacturability, mechanical response, and compare experimental results with numerical simulation. Laser powder bed fusion Lattice structures Maraging steel Finite element analysis Functionally graded materials Digital image correlation Applied Mechanics Computer-Aided Engineering and Design Manufacturing Metallurgy Other Engineering Structural Materials
63	Additive Manufacturing of Maraging 250 Steels for the Rejuvenation and Repurposing of Die Casting Tooling Kottman, Michael Andrew 09 February 2015 (has links) No description available. Metallurgy Engineering Materials Science Additive Manufacturing Maraging Die Casting Repair Laser Hot Wire LHW Direct Metal Deposition DMD Gas Metal Arc Welding GMAW Rapid Pulsed Arc RPA Laser Engineered Net Shaping LENS Electron Beam Freeform Fabrication EBF3

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