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norskFakultet for ingeniørvitenskap og teknologi: Recent submissions
Now showing items 81-100 of 1010
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Shell based finite element modeling of Herøysund Bridge
(Master thesis; Mastergradsoppgave, 2023-05-15)This master's thesis thoroughly examines the application of the Finite Element Method (FEM) to the numerical modal analysis of the Herøysund Bridge, focusing on the theoretical backdrop, construction process, FEM techniques, and Eurocode recommendations for concrete structures. This study aims to demonstrate the utility of FEM in bridge analysis by utilizing ANSYS 2023 R1 to conduct a full numerical ... -
Robotic Arm for a Drone
(Master thesis; Mastergradsoppgave, 2023-05-14)Thanks to technical improvements, drones may now perform more than simply visual inspections of structures and buildings. An Unmanned Aerial Vehicle (UAV) drone can be equipped with a robotic arm or an attachment with sensors to check and test the structures and buildings. Designing a robotic arm with a modular end-effector that can be attached to a drone was the focus of this master's thesis research. ... -
Sammenligning av energipotensialet i slam fra ulike slamkilder
(Master thesis; Mastergradsoppgave, 2024-05-21)Slam er restproduktet ved rensing av avløpsvann og i produksjon av oppdretts- og settefisk, og lar seg fjerne fra vannet gjennom sedimentering, flotasjon og/eller filtrering. I kraft av sitt rike innhold av organisk materiale og næringsstoffer, er slam samtidig en verdifull ressurs. Avhengig av dets råstoffsammensetning, kan slammet blant annet benyttes i produksjon av biogass, og følgelig inngå som ... -
Shewanella baltica in a Microbial Fuel Cell for Sensing of Biological Oxygen Demand (BOD) of Wastewater
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-15)Geobacter and Shewanella are the most characterized electroactive bacteria genera. Unlike genus Geobacter that is strictly anaerobic, Shewanella can grow under both oxic and anoxic environments and is capable of metabolizing a wider substrate range. In the present study, the use of strain Shewanella baltica 20 in MFC-based biosensor for BOD monitoring is reported. The S. baltica strain 20 was isolated ... -
Intelligent decision modeling for optimizing railway cold chain service networks under uncertainty
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-27)Railway cold chain service network design (RCC-SND) aims to optimize the utilization of stations and lines as well as train allocations in a manner that minimizes costs while satisfying the service requirements of shippers. Furthermore, the uncertainties associated with freight demand, transportation costs, quality loss, station handling capacity, and arc capacity make the RCC-SND a complex ... -
Evaluering av optimal erstatning av naturlig tilslag med resirkulert betongtilslag for å oppnå tilstrekkelig bestandighet
(Master thesis; Mastergradsoppgave, 2021-06-22)Bygg- og anleggsindustrien er en stor bidragsyter til global oppvarming grunnet produksjon av bygningsmateriale, transport samt bygnings- og rivningsaktivitet. Materialets kretsløp og sirkulær økonomi kan drastisk redusere forurensning og etterspørselen av naturlige ressurser. Bruk av resirkulert tilslag (RCA) er en av mulighetene til hvordan en kan redusere forbruket av naturlige ressurser for ... -
Revisiting the development trajectory of parallel machine scheduling
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-23)The research on the Parallel Machine Scheduling Problem (PMSP) has undergone significant development. The most recent comprehensive review of published studies dates back to early 2001. This article presents an algorithmic review of PMSPs, using Main Path Analysis (MPA) to identify seminal knowledge diffusion and development trajectories. This research also sheds light on the less tangible aspects ... -
Sea Spray Icing Prediction: Integrating Experiments, Machine Learning, and Computational Fluid Dynamics
(Doctoral thesis; Doktorgradsavhandling, 2024-05-27)<p>Ice accretion is challenging for maritime and offshore operations in the Polar regions. Activities related to tourism, oil and gas exploration, fishing, and offshore wind energy are increasing in the arctic. Ice accretion on vessels and offshore structures pose a threat to structural integrity, vessel stability, and personnel safety in outdoor working environments. Freezing sea spray is the largest ... -
Evaluering av optimal erstatning av naturlig tilslag med resirkulert betongtilslag for å oppnå tilstrekkelig bestandighet
(Master thesis; Mastergradsoppgave, 2021-05-20)Bygg- og anleggsindustrien er en stor bidragsyter til global oppvarming grunnet produksjon av bygningsmateriale, transport samt bygnings- og rivningsaktivitet. Materialets kretsløp og sirkulær økonomi kan drastisk redusere forurensning og etterspørselen av naturlige ressurser. Bruk av resirkulert tilslag (RCA) er en av mulighetene til hvordan en kan redusere forbruket av naturlige ressurser for ... -
Besparelse med bruk av SD-anlegg
(Master thesis; Mastergradsoppgave, 2021-05-14)Denne oppgaven er en studie av hvordan SD-anlegg kan gi besparelser i både eksisterende og nye bygg. Rapporten ser på besparelser i form av energi og andre potensielle besparelser, som hvor mye tid et SD-anlegg frigir i løpet av en arbeidsdag og organisering av ferieavvikling. Innledningsvis er det gjort en gjennomgang av teori som er relevant for oppgaven, med fokus på SD-anleggets hierarki, ... -
DC-DC Converter For Fuel Cell (Control Strategy, Voltage Curve, Optimization, Converter Type). Current-fed Full-bridge Isolated DC-DC Converter With An Active Clamp Circuit For Fuel Cell Application
(Master thesis; Mastergradsoppgave, 2022-05-15)This thesis investigates one of the most favorable converters for integrating fuel cells into a DC microgrid. A current-fed full-bridge isolated DC-DC converter has advantages such as high voltage conversion ratio, low switches’ losses, and low input current ripple which make it one of the best choices for Fuel cells (FC). This converter transfer power to the load through the leakage inductance which ... -
Technology transfer framework review for easy Cobot adoption by SMEs
(Master thesis; Mastergradsoppgave, 2023-05-15)Collaborative industrial Robots (Cobots) were introduced as an advancement to traditional industrial Robots. Some advantages that were incorporated in Cobots included the ease of human interaction, safer working conditions and considerable smaller sizes. However, most Small & Medium Enterprises (SMEs) in Norway are not convinced of the merits of adopting these Cobots into their operations. This ... -
Uncertain Remanufacturing Reverse Logistics Network Design in Industry 5.0: Opportunities and Challenges of Digitalization
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-10)Remanufacturing, a crucial step of reverse logistics, focuses on restoring or enhancing the functionality of waste products. The challenge in planning an effective remanufacturing reverse logistics system lies in the uncertainties from various sources. In addition, the evolving industrial landscape in Industry 5.0 necessitates adaptability to technological advancements. This paper proposes an ... -
Experiments With Sea Spray Icing: Investigation of Icing Rates
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-11)Sea spray icing on ships and marine structures depends on a complex correlation between metocean parameters and vessel characteristics. Sea spray icing rates have mostly been investigated and given as a function of general metocean parameters. The existing models suffer from the lack of experimental data. More experimental data are required for better prediction models and understanding of the icing ... -
Computer-Aided Optimisation in Additive Manufacturing Processes A State of the Art Survey
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-15)Additive manufacturing (AM) is a field with both industrial and academic significance. Computer-aided optimisation has brought advances to this field over the years, but challenges and areas of improvement still remain. Design to execution inaccuracies, void formation, material anisotropy, and surface quality are examples of remaining challenges. These challenges can be improved via some of the ... -
Exploring the Interconnected Realms of Multiphysics: Insights from My Research Journey
(Conference object; Konferansebidrag, 2024-04-02)In this talk, I present an in-depth exploration of multiphysics—a domain where physical processes or phenomena operate simultaneously and interact. My research encompasses the development and utilization of computational models to solve complex systems where interdependent physical processes coexist. From the fluid-structure interactions that play a critical role in various engineering applications ... -
Multi-agent Reinforcement Learning for Structured Symbolic Music Generation
(Chapter; Bokkapittel, 2023-07-12)Generating structured music using deep learning methods with symbolic representation is challenging due to the complex relationships between musical elements that define a musical composition. Symbolic representation of music, such as MIDI or sheet music, can help overcome some of these challenges by encoding the music in a format that allows manipulation and analysis. However, the symbolic ... -
Some New weak-(Hp-Lp) Type Inequalities For Weighted Maximal Operators Of Fejér Means Of Walsh–Fourier Series
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-13)We introduce some new weighted maximal operators of the Fejér means of the Walsh–Fourier series. We prove that for some "optimal" weights these new operators are bounded from the martingale Hardy space H<sub>p</sub>(G) to the space weak-L<sub>p</sub>(G), for 0 <p<1/2. Moreover, we also prove sharpness of this result. As a consequence we obtain some new and well-known results. -
Analysis of civil engineering infrastructure in Norway with solutions based on structural health monitoring and artificial intelligence
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-19)Ageing civil infrastructures such as bridges and building causes many consequences from practical and economical point of view. Especially in northern Norway, the impact of extreme arctic conditions is intense on civil engineering infrastructures (see \cite{Singh:2022:hologaland_Bridge}). With the increased loading due to the prosperous seafood industry and increased cargo activity is putting ...
