Search for dissertations about: "HV"
Showing result 1 - 5 of 267 swedish dissertations containing the word HV.
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1. High volumetric machining strategies for superalloy gasturbine components : Comparing conventional and nonconventional machining methods for efficient manufacturing
Abstract : There is a strong industrial driving force to find alternative manufacturing technologies in order to make the production of aero engine components of superalloys even more efficient than it is today. Introducing new and nonconventional machining technologies, as well as enhanced utilisation of today's high volumetric manufacturing, allows taking a leap to increase the material removal rate and the productivity. READ MORE
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2. Microstructure and mechanical properties of low-temperature hot isostatic pressed Ti-6Al-4V manufactured by electron beam melting
Abstract : Ti-6Al-4V manufactured by electron beam melting Keywords: Additive manufacturing, high-temperature tensile properties, low cycle fatigue, neutron diffraction, fatigue crack growth ISBN: 978-91-89325-27-2 (Printed) 978-91-89325-26-5 (Electronic) Ti-6Al-4V is the most widely used α+β titanium alloy in aerospace engine applications due to its high specific strength. Typically, the alloy is manufactured as castings or forgings and then machined to final geometry. READ MORE
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3. Expansive design for teachers : An activity theoretical approach to design and work integrated learning
Abstract : This thesis explores how Participatory Design (PD) and Cultural Historical Activity Theory (CHAT) can be combined and used as a theoretical framework and methodology in a professional development activity for teachers. A shift in the way we view teachers, from implementors to designers who actively construct, invent, and develop the practice of schooling also calls for changes in teacher education and professional development activities. READ MORE
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4. Processability of Laser Powder Bed Fusion of Alloy 247LC-Influence of process parameters on microstructure and defects
Abstract : This thesis is about laser powder bed fusion (L-PBF) of the nickel-basedsuperalloy Alloy 247LC. Alloy 247LC is mainly used in gas turbine blades and processing the blades with L-PBF may confer performance advantage over the blades manufactured with conventional methods. READ MORE
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5. Edge Geometry Effects on Entry Phase by Forces and Vibrations
Abstract : Intermittent machining is in general strongly related to the large impacts in the entry phase and related vibrations. The influence of the impact forces and vibrations on the cutting process is dependent on workpiece material, structural properties of the tool-workpiece system, cutting edge geometries and cutting parameters. READ MORE