Blar i NTNU Open på forfatter "Ringen, Geir"
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Aluminium Concept Development of Sustainable and Modular Closed Fish Farm
Bergum, Kjell Sverre Høyvik; Isungset, Birgit Vindegg (Master thesis, 2019)Målet med denne oppgaven er å undersøke mulighetene for et modulært og skalerbart aluminiumkonsept for et lukket oppdrettsanlegg. Denne oppgaven tar sikte på å identifisere mulige løsninger gjennom kontinuerlig konseptutvikling, ... -
Aluminium Concept Development of Sustainable and Modular Closed Fish Farm
Bergum, Kjell Sverre Høyvik; Isungset, Birgit Vindegg (Master thesis, 2019)Målet med denne oppgaven er å undersøke mulighetene for et modulært og skalerbart aluminiumkonsept for et lukket oppdrettsanlegg. Denne oppgaven tar sikte på å identifisere mulige løsninger gjennom kontinuerlig konseptutvikling, ... -
Bridging the ‘Valley of Death’: Can Agile Principles Be Applied in Industry-Academia Research and Innovation Projects?
Hansen, Irina-Emily; Mork, Ola Jon; Welo, Torgeir; Ringen, Geir (Peer reviewed; Journal article, 2021)Government funding supports industry-academia research and innovation projects in Norway, sharing the risk of the research component in innovation. However, funding alone may not be sufficient to overcome potential differences ... -
Comparative Life Cycle Analysis of the Langenuen Fjord Crossing
Graafland, Jeroen (Master thesis, 2020)Bakgrunn For kryssing av Langenuen-fjorden i Ferjefri E39-prosjektet er det i dag to rapporter med brokonsepter på bordet. Hovedforskjellen mellom de to rapportene er brobjelken. Begge parter foreslår å anlegge en hengebro, ... -
Computer Vision for Defect Detection in Wood Manufacturing
Neidhöfer, Jan (Master thesis, 2023)Wood is a sought-after resource used in various application areas, representing sustainability and natural aesthetics. However, the wood industry and its secondary wood products face challenges of low levels of automation ... -
A Cross-disciplinary, cross-organizational approach to sustainable design and product innovation in the aluminum industry
Fragapane, Giuseppe; Schulte, Kjersti Øverbø; Eleftheriadis, Ragnhild; Reke, Eivind; Ringen, Geir (Peer reviewed; Journal article, 2022)Aluminum is a promising sustainable and industrial resource that provides strong, lightweight structures with complex geometric possibilities, a high recovery rate in the recycling process, and low-emission production when ... -
Design for Excellence to Explore Complex Product Service Systems: A Case Study
Ringen, Geir; Landsem, Kristin Lorentzen; Holtskog, Halvor (Peer reviewed; Journal article, 2022)Complexity in new product development is claimed to continuously increase, causing challenges that require new and cross-disciplinary solutions. There are at least three major forces causing upheaval in the way we are ... -
Design of Non-conventional Wind Turbine structures with Integrated Design for manufacturing
Ledal, Vegard (Master thesis, 2023)Masteroppgaven tar for seg to sentrale aspekter knyttet til offshore vindturbiner: sammenføyningsmetoder for vindturbinblader og evaluering av produksjonsverdikjeder. Målet er å utforske effektive og bærekraftige tilnærminger ... -
Designe en automatisert produksjonslinje for pre-fabrikkerte veggelementer i tre.
Kvernstuen, Jarmund Øyen; Buen, John (Bachelor thesis, 2024)Bygg- og anleggsbransjen har gjennomgått lite forandringer siste årene. Alle operasjoner i byggebransjen er i hovedsak manuelle. Det inkluderer manuell montering av bindingsverk, lekter, kledning, vind- og dampsperre, for ... -
Electrical and thermal stability of Al-Cu welds: Performance benchmarking of the hybrid metal extrusion and bonding process
Elkjær, Aksel Sean; Sørhaug, Jørgen A; Ringen, Geir; Bjørge, Ruben; Grong, Øystein (Peer reviewed; Journal article, 2022)Advances in joining processes for aluminum and copper are sought after to facilitate the greater adoption of aluminum in electrical applications. Aluminum's chemical affinity to copper causes the joining and lifetime of ... -
Evaluating the Use of Aluminum Alloys in Concrete Structures
Brunborg, Martin Austrheim (Master thesis, 2024)Denne oppgaven undersøker mulighetene for å armere betong med aluminiumslegeringer. Stål har lenge vært det tradisjonelle valget for betongsarmering på grunn av metallets høye styrke og holdbarhet. Armeringsjern i stål kan ... -
Exploring the Influence of Pre/Post-Aging on Springback in Al-Mg-Si Alloy Tube Bending
Ma, Jun; Ha, Taekwang; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Li, Heng (Peer reviewed; Journal article, 2020)Aluminium alloy (Al-alloy) bent tube is one kind of strategic lightweighting components, which attracts application in industrial clusters, such as automobile, aerospace, etc. To meet the demands on high-precision ... -
A feasibility study of continuous grain refinement of sheet metal
Ha, Taekwang; Murudkar, Rahul; Hartwig, Karl; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen (Peer reviewed; Journal article, 2020)Various severe plastic deformation (SPD) techniques have been used to develop ultrafine-grained (UFG) materials to enhance material properties. Equal channel angular extrusion/pressing (ECAE/ECAP) is an effective technique ... -
Flexible 3D Stretch Bending of Aluminium Alloy Profiles: An Experimental and Numerical Study
Welo, Torgeir; Ma, Jun; Blindheim, Jørgen; Ha, Taekwang; Ringen, Geir (Peer reviewed; Journal article, 2020)Three-dimensionally (3D) shaped extrusions are attracting increased attention in order to meet the ever-growing demands on weight reduction to obtain lower emissions in the automobile industry. With the current transformation ... -
Forming analysis of aluminium extruded profiles
Løvås, Åsmund (Master thesis, 2024)Bøying er en vanlig og effektiv produksjonsmetode med et bredt spekter av bruksområder i mange hverdagslige produkter. Flere bøyingsprosesser er utviklet for å imøtekomme ulike utfordringer og ulike krav. Noen vanlige ... -
Gap Tolerance for Friction Stir Welding of Large, Extruded Aluminum Profiles
Rolle, Robert (Master thesis, 2022)Friksjonssveising er en metode for sammenføyning av materialer, som aluminium, uten bruk av tilsatsmateriale eller en ekstern varmekilde. Denne studien har undersøkt hvor robust friksjonssveiseprosessen er ved varierende ... -
How Interorganizational Learning Can Enhance Industrial Development in Complex Value Chains
Pålsrud, Frode Gulbrandsen (Master thesis, 2019)The ability to acquire and utilize new knowledge is considered a key factor for gaining competitive advantage. Getting a better understanding of complexities, and creating an industrial environment where knowledge are ... -
In-line Springback Measurement for Tube Bending Using a Laser System
Ha, Taekwang; Ma, Jun; Blindheim, Jørgen; Welo, Torgeir; Ringen, Geir; Wang, Jyhwen (Peer reviewed; Journal article, 2020)Tube bending process is extensively used for many industrial fields such as the automotive, shipbuilding, and aircraft manufacturing industries. However, one limitation of the tube bending process is that it is not easy ... -
Integrating Quality and Lean into a Holistic Production System
Ringen, Geir; Aschehoug, Silje Helene; Holtskog, Halvor; Ingvaldsen, Jonas A (Journal article; Peer reviewed, 2014)Companies have for years tried to figure out how to consistently organize their business units for improving quality and efficiency and at the same time reduce costs and lead times. Toyota's production system (TPS) and its ... -
Interorganizational Learning in Manufacturing Networks
Ringen, Geir; Pålsrud, Frode Gulbrandsen; Lodgaard, Eirin Anita (Chapter, 2020)The ability to acquire and utilize new knowledge within an inter-organizational context is considered a key factor for gaining competitive advantage. This study aims at investigating how organizations do cross-border ...