Blar i NTNU Open på forfatter "Sørby, Knut"
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Development of an Autonomous Underwater Camera for Fish Farming Analysis
Engan, Christopher Skrondal (Master thesis, 2020)Abstract will be available on 2023-06-16 -
Directional fatigue behaviour of maraging steel grade 300 produced by laser powder bed fusion
Solberg, Klas; Hovig, Even Wilberg; Sørby, Knut; Berto, Filippo (Peer reviewed; Journal article, 2021)Surfaces of metals produced by additive manufacturing (AM) are known to be rough and populated with defects, this is, in particular, true for downward-facing (down-skin) surfaces. When dealing with the fatigue of as-built ... -
Effect of building orientation on mechanical properties of Ti6Al4V produced with powder bed fusion (PBF-LB/M)
Nes, Endre Verlo (Master thesis, 2021)De fleste publiserte forskningsartiklene om PBF-LB/M som omhandler effekten av bygningsorienteringer, fokuserer på forskjellen mellom horisontale (0◦) og vertikale (90◦ ) bygningsorienteringer. I denne oppgaven ble det ... -
Effect of Lubricant Viscosity on the Friction Behavior of the mm-scale Specimen
Wu, Jian; Sørby, Knut (Chapter, 2021)The size of moving parts in MEMS (micro-electro-mechanical-systems) is often in the mm-scale or smaller. Affected by the size effect, the friction in the mm-scale is different from the friction larger systems. In this ... -
Effect of Processing Parameters on the Relative Density of AlSi10Mg Processed by Laser Powder Bed Fusion
Hovig, Even Wilberg; Holm, Håkon Dehli; Sørby, Knut (Chapter, 2019)In order for a material processed by laser powder bed fusion (LPBF) to achieve the desired mechanical properties, the relative density of the material should be as high as possible. In this study, the effect of various ... -
Effect of Processing Parameters on the Relative Density of AlSi10Mg Processed by Laser Powder Bed Fusion
Hovig, Even Wilberg; Holm, Håkon Dehli; Sørby, Knut (Journal article, 2019)In order for a material processed by laser powder bed fusion (LPBF) to achieve the desired mechanical properties, the relative density of the material should be as high as possible. In this study, the effect of various ... -
Elektrifisering av ROV grinder
Eid, Magnus Bjerkestrand; Aanestad, Christian Vinorum; Geitung, Tomas Vincens Dencker (Bachelor thesis, 2024)Bacheloroppgaven undersøker mulighetene og alternativene for elektrifisering av en undervanns-grinder til en ROV (Remotely Operated Vehicle). Formålet er å erstatte de nåværende hydrauliske systemene med elektriske løsninger ... -
Estimation of minimum volume of bounding box for geometrical metrology
Chelishchev, Petr; Sørby, Knut (Peer reviewed; Journal article, 2020)This paper presents algorithms for estimating the minimum volume bounding box based on a three-dimensional point set measured by a coordinate measuring machine. A new algorithm, which calculates the minimum volume with ... -
Formation of Built-Up Layer on the Tool in Turning Operation of Magnesium Alloys
Tomac, Nikola; Sørby, Knut; Doboviček, Sandro (Journal article; Peer reviewed, 2018)The present work highlights some factors which affect formation of a protective built-up layer (BUL) on the rake face of the cutting tool when cutting magnesium alloys. This work suggests that BUL can positively affect ... -
High cycle fatigue life estimation of AlSi10Mg processed by laser powder bed fusion
Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Sørby, Knut; M'hamdi, Mohammed; Andreassen, Erik (Journal article; Peer reviewed, 2018)Fatigue life is known to be dependent on the surface properties of the material. Surface roughness provokes local stress concentration and cause crack initiation even at minute cyclic loads. In laser powder bed fusion, the ... -
High cycle fatigue life estimation of materials processed by laser powder bed fusion
Hovig, Even Wilberg; S. Azar, Amin; Sunding, Martin Fleissner; Andreassen, Erik; Sørby, Knut (Journal article, 2019)The fatigue life of metal components is known to depend on the surface topography. For components made by laser powder bed fusion, the roughness of the as‐built surfaces depends on the orientation of the component surface ... -
High-Pressure Cooling in Turning of Inconel 625 with Ceramic Cutting Tools
Sørby, Knut; Vagnorius, Zydrunas (Journal article; Peer reviewed, 2018)Machining of heat resistant aerospace materials such as Inconel 625 or Inconel 718 is characterized by low cutting speeds, high tool wear rate, and high production costs. The machinability of heat resistant super alloys ... -
Improvement of the Positioning Accuracy of Industrial Robots
Johnsrud, Vegard (Master thesis, 2014)Industriroboter er godt kjent for sin høye repeterbarhet, noe som reflekteres i deres hovedbruksområde i industrien, deriblant pick and place -operasjoner og punktsveising. Med det økende behovet for automatisering i ... -
Improving the Accuracy of a Five-Axis Machine Tool by Laser Tracker Calibration - Geometric Error Compensation
Ellingsdalen, Simen H. (Master thesis, 2021)En av hovedegenskapene til en velfungerende verktøymaskin er dens repeterbarhet og nøyaktighet. Når antall akser i en verktøymaskin øker, øker også potensialet for feil. Denne oppgaven fokuserer på å finne alle de geometriske ... -
The Influence of the Rake Angle on the Cutting of Low-Lead and Lead-Free Brass Alloys
Müller, Magdalena Susanne; Sørby, Knut (Chapter, 2023)Components manufactured from brass alloys are widely used in plumbing systems. Traditionally, lead is added to the alloy to improve the machinability. In recent years, the use of lead has been restricted due to health and ... -
An investigation of the anisotropic properties of heat-treated maraging steel grade 300 processed by laser powder bed fusion
Hovig, Even Wilberg; S. Azar, Amin; Solberg, Klas; Sørby, Knut (Peer reviewed; Journal article, 2021)In order to explore the possibilities enabled by laser beam powder bed fusion of metals (PBF-LB/M), reliable material models are necessary to optimize designs with respect to weight and stiffness. Due to the unique processing ... -
Laserbasert måling av verktøyposisjon
Reberg, Andreas (Master thesis, 2019)Sandvik Coromant ønsket et prosjekt for å kartlegge hvorvidt laserbasert måling av verktøyposisjon kan være et av deres neste prosjekter, for å fortsatt være markedsledende på høyteknologisk maskineringsutstyr også i årene ... -
Machinability of Low-Lead and Lead-Free Brass Alloys
Müller, Magdalena Susanne (Doctoral thesis, 2024) -
Machine Learning of Quality Assurance in Polymer Powder Bed Fusion Additive Manufacturing
Baturynska, Ivanna (Doctoral theses at NTNU;2020:120, Doctoral thesis, 2020)The latest developments in the field of additive manufacturing (AM) have led to the wider use of this technology for the production of end-user products. As a result, more stringent requirements are set to the quality of ... -
Maskinering av blyfri messing
Teigen, Håvard (Master thesis, 2020)