Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 341-360 av 23134
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A Loudspeaker Element as a Passive or Active Resonance Absorber
(Master thesis, 2017)Absorbing low frequent sound is a challenge, but earlier studies, (Rivet, 2017), (R. Boulandet, 2014) and (Lissek et al., 2011), have shown that a loudspeaker can function well as an absorber with a broader frequency spectre ... -
A low frequency deghosting method: Analysis and numerical tests
(Journal article; Peer reviewed, 2017)The low-frequency component of seismic data can be beneficial for several reasons: improved signal penetration into the earth, enhanced resolution, and better constrained inversion results. We have developed a detailed ... -
A Lumped Multi-element Model for Analysing the Effects of the Top Drive Mass and the Drill Line Elasticity
(Master thesis, 2021)Heisespillet i boreta ̊rnet har enda ikke blitt inkludert i de eksisterende multi-element mod- ellene for aksielle vibrasjoner av borestrengen. Eksperimentelle resultater tyder derimot pa ̊ at heisespillet kan ha en effekt ... -
A Machine Learning Approach for Net Pay Estimation from Borehole Image Logs
(Master thesis, 2020)In the realm of hydrocarbon exploration, net pay estimation is essential for the economic calculation and valuation of the field. By definition, net pay is the reservoir interval with economically producible hydrocarbons ... -
A Machine Learning Approach to Correlation Development Applied to Fin-Tube Bundle Heat Exchangers
(Journal article; Peer reviewed, 2018)Heat exchanger designers need reliable thermal-hydraulic correlations to optimize heat exchanger designs. This work combines an adaptive sampling method with a Computational Fluid Dynamics (CFD) simulator to obtain increased ... -
A Machine Learning Approach to Predict Chattering Alarms
(Master thesis, 2020)The alarm system plays a vital role to grant safety and reliability in the process industry. Ideally, an alarm should inform the operator about critical conditions only, and a set of corrective actions should be associated ... -
A Machine Learning Approach to predict Equipment Failure in Presence of Hydrogen
(Master thesis, 2022)Hydrogen could replace fossil fuels and mitigate the problem of global warming in the forthcoming years. However, pieces of equipment exposed to a hydrogen environment must cope with the damaging effect of this substance ... -
A Machine Learning Approach to Support the Analysis of Climate-Driven Natural Disaster Risk
(Master thesis, 2021)Klimaendringer har bidratt til at naturkatastrofer har opptrådt med en økende hyppighet og alvorlighetsgrad de siste årene, og den økende trenden forventes å fortsette og eskalere. Høyere havtemperaturer øker sannsynligheten ... -
A Machine Learning Approach to Support the Analysis of Climate-Driven Natural Disaster Risk
(Master thesis, 2021)Klimaendringer har bidratt til at naturkatastrofer har opptrådt med en økende hyppighet og alvorlighetsgrad de siste årene, og den økende trenden forventes å fortsette og eskalere. Høyere havtemperaturer øker sannsynligheten ... -
A macro model for shallow foundations on granular soils describing non-linear foundation behavior
(Journal article; Peer reviewed, 2017)This paper describes a macro model for a shallow foundation. The macro model represents the non-linear soil structure interaction (SSI) exemplified by a suspension bridge anchor-block. The model can be adjusted and used ... -
A macro-element for integrated time domain analyses representing bucket foundations for offshore wind turbines
(Journal article; Peer reviewed, 2018)The paper presents a macro-element model for bucket foundations to be used in integrated time domain analyses of offshore wind turbines. The macro-element has been formulated in the multi-surface plasticity framework, and ... -
A macro-element model for multidirectional cyclic lateral loading of monopiles in clay
(Journal article; Peer reviewed, 2018)This paper investigates numerically the impact of multidirectional cyclic loads on the response of a monopile in clay supporting an offshore wind turbine (OWT). The results indicate that multidirectional loading modifies ... -
A macro-element pile foundation model for integrated analyses of monopilebased offshore wind turbines
(Journal article; Peer reviewed, 2018)The design of OWTs relies on integrated load analyses tools that simulate the response of the entire OWT (including the rotor-nacelle assembly, support structure and foundation) under combined aerodynamic and hydrodynamic ... -
A mathematical model for evaluating spare parts qualification costs considering different manufacturing technologies
(Master thesis, 2022)Ideelt sett lagrer bedrifter en tilstrekkelig mengde reservedeler for å unngå nedetid. Til gjengjeld er det ønskelig at lagerstørrelsen ikke overskrider hva som er nødvendig, da dette fører til høye lagerkostnader. Det å ... -
A metallurgical and thermal analysis of Inconel 625 electron-beam welded joints
(Journal article; Peer reviewed, 2019)Inconel 625 is a nickel-based superalloy that finds application in many industrial sectors thanks to its high strength, excellent fabricability, and outstanding corrosion resistance. It is characterized by a good weldability ... -
A Method for Detecting Near-Misses from AIS Data
(Master thesis, 2019)Konsekvensene av maritime ulykker kan være enorme med hensyn til tap av liv, økonomiske tap og miljøskader. Derfor har forbedring av sikkerheten til sjøs vært et fokus i mange år, og det har vært utført ulike maritime ... -
A method for determining material's equivalent stress-strain curve with any axisymmetric notched tensile specimens without Bridgman correction
(Journal article, 2017)Large deformation analyses of problems such as plastic forming, ductile fracture with finite element method need a full range of material's equivalent stress-strain curve or flow stress-strain curve. The equivalent ... -
A Method for Determining the Mode Shapes from a Finite Element Model for Use in a Finite-Mode Vibration Simulation Model
(Master thesis, 2016)In this thesis, a methodology for retrieving mathematical expressions of the mode shapes of a crankshaft based on numerical data yielded by a finite element model is presented and tested. The mode functions should be used ... -
A method for estimation of equivalent-volume ice thickness based on WMO egg code in absence of ridging parameters
(Journal article; Peer reviewed, 2018)When calculating equivalent-volume ice thickness along a vessel's projected route for the purpose of ice resistance estimation, information on both undeformed ice (level ice) and deformed ice (mainly ridges) is needed. ... -
A method for evaluating the potential for retrofitting Wind Assisted Ship Propulsion from a ship owner perspective
(Master thesis, 2022)Skipsfart står for nesten 3% av de totale menneskeskapte utslippene av karbondioksid, og aktører innenfor den maritime næringen er under press for å finne løsninger for å redusere disse utslippene. Et lovende konsept for ...