Browsing Institutt for marin teknikk by Title
Now showing items 731-750 of 3471
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Critical Assessment of Non-linear Wave Loads in the Design of Offshore Wind Turbines
(Master thesis, 2014)Good wind conditions make Dogger Bank a well suited site for offshore wind industry. The harsh environment combined with shallow water, create significant non-linear wave loads which must be accounted for in the ultimate ... -
A Critical Review of Constitutive Models Applied to Ice-Crushing Simulations
(Peer reviewed; Journal article, 2024)In marine engineering, understanding the compressive behaviour of ice is crucial for accurately modelling ice loads on ships and offshore structures in ice-prone waters. Over the past few decades, numerous studies have ... -
Crystal plasticity modeling of microstructure influence on fatigue crack initiation in extruded Al6082-T6 with surface irregularities
(Journal article, 2018)The influence of surface roughness and microstructure heterogeneities in the vicinity of macroscopic stress concentrations are investigated by crystal plasticity simulations. It is shown that in the extruded Al6082-T6 alloy ... -
Current Estimation for Autonomous Underwater Vehicle using Supervised Learning
(Master thesis, 2021)Navigasjonsteknikker for undervannsfartøy avhenger av pålitelige hastighetsestimater. Den største usikkerheten for estimatene er havstrømninger, som utgjør den største eksterne forstyrrelsen. DVL er per i dag den ledende ... -
Current Estimation for Small Autonomous Passenger Ferry
(Master thesis, 2020)Autonomien i maritime næringer blir stadig bedre, noe som gjør at flere innovative prosjekter settes i gang. Nå som selvkjørende busser har blitt en realitet på veien, har det også blitt åpnet opp for idéen om selvkjørende ... -
Current Profile Estimation for a Moored Floating Structure
(Master thesis, 2018)Stationkeeping operations for offshore vessels (drillrigs, drillships, construction and intervention vessels, PSVs, etc.) are essential for offshore filed development and oil and gas production. Short-term subsea operations ... -
Current status and future operational models for transit shipping along the Northern Sea Route
(Journal article; Peer reviewed, 2018)The Northern Sea Route (NSR) has received increased international attention during the recent years as an alternative transit corridor for shipping between Europe and East Asia. In 2015, the project “Feasibility and ... -
Cyber Security Issues in Navigation Systems of Marine Vessels From Control Perspective
(Chapter, 2017)Autonomous marine vessels are the way forward to revolutionize maritime operations. However, the safety and success of autonomous missions depend critically on the availability of a reliable positioning system and time ... -
Damage Assessment of Sevan 1000 FPSO Subjected to Impacts from Shuttle Tankers
(Master thesis, 2018)Floating, production, storage and offloading (FPSO) units are the only viable option for oil and gas production in deep waters. Shuttle tankers are normally employed for cargo transfer because they are the most practical ... -
Damage Assessment of Sevan FPSO Subjected to Impacts From Shuttle Tankers
(Master thesis, 2014)Platform-ship collisions are fortunately rare events, but as the development of the offshore and oil industry and the gradually frequently used offloading operation, accidents become more and more frequent. The consequences ... -
Damage identification of a jacket support structure for offshore wind turbines
(Chapter, 2020)Offshore jacket structures are regarded as a suitable type of support structure for offshore wind turbines in immediate water depths. Because of the welded tubular members used and environmental conditions, offshore jackets ... -
Damage Identification of an Offshore Wind Turbine Jacket Support Structure
(Master thesis, 2014)Due to the variable and stochastic offshore environment, offshore wind turbines are prone to fatigue. Fatigue damage usually occurs as cracks and is an important indicator of the structure's condition and the remaining ... -
Damage interaction analysis of ship collisions
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:208, Doctoral thesis, 2013)During its lifetime, a ship may encounter accidents, such as collision and grounding, for which damage consequences in the forms of loss of human life, pollution of the environment, and economic losses may be substantial. ... -
Damped steady-state resonant sloshing in a circular base container
(Journal article; Peer reviewed, 2018)To describe the damped resonant sloshing in a circular base container, the nonlinear modal equations by Faltinsen et al (2016 J. Fluid Mech. 804 608–45) are equipped with linear damping terms associated with the logarithmic ... -
Data driven approach to risk management and decision support for dynamic positioning systems
(Peer reviewed; Journal article, 2020)Offshore oil and gas operations are inherently associated with risk and may have catastrophic consequences to life, property, and environment. Risk management is thus performed during the design, planning, and operation ... -
Data mining methods for the analysis of power systems of vessels
(Doctoral theses at NTNU;2018:412, Doctoral thesis, 2018)Measurements from on-board monitoring systems of vessels are now increasingly available for data analysis, and their relevance is growing as the ship industry enters the digitilization phase. The analysis of data from ... -
Data-Driven Analysis of Vessel Performance
(Master thesis, 2017)In this thesis the relation between vessel performance and various vessel and environmental variables were investigated using a data-driven approach. A total of 12 variables such as speed over ground and days since drydock ... -
A data-driven approach for fault diagnosis of drivetrain system in a spar-type floating wind turbine based on the multi-point acceleration measurements
(Peer reviewed; Journal article, 2022)This paper deals with the condition monitoring of a floating wind turbine drivetrain using multi-point acceleration measurements. Single sensor data obtained from drivetrain system may provide insufficient information about ... -
Data-driven battery modeling of hybrid power systems for offshore vessels
(Master thesis, 2021)Maritim næring øker stadig fokuset på effektive og miljøvennlige tiltak, og befinner seg nå i et grønt skifte. Dette bidrar til at det stadig kommer nye løsninger for å redusere drivstofforbruk og utslipp. Batteridrevne ... -
Data-driven control in marine systems
(Journal article; Peer reviewed, 2018)With the advent of cheap smart sensors installed on board marine vehicles and the increasing computational power of small embedded processors there is tremendous potential for the implementation of new strategies to control ...