Blar i Institutt for marin teknikk på tittel
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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 Driven modelling of Sea Ice Drift
(Master thesis, 2024)We develop a realistic simulation of sea ice drift and deformation using machine learning (ML) techniques as an alternative to traditional physics-based numerical models. Traditional numerical sea ice models like neXtSIM ... -
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 ... -
Data-Driven Efficiency Modeling and Analysis of All-Electric Ship Powertrain; A Comparison of Power System Architectures
(Peer reviewed; Journal article, 2021)In this paper, a data-driven dynamic efficiency model is developed for efficiency evaluation and comparison of ship electric powertrain with various system configurations and load-sharing methods. Based on the proposed ... -
Data-driven fault detection for plunger pumps
(Master thesis, 2018)In this thesis, a method for detecting faults for plunger pumps using a data-driven approach is developed. Large amounts of data have been accumulated in the process industry during the recent decades. A general digitization ... -
Data-driven method for hydrodynamic model estimation applied to an unmanned surface vehicle
(Journal article; Peer reviewed, 2024)Unmanned surface vehicles (USVs) are increasingly appealing for gathering metocean data, including directional sea spectra. This paper presents new developments towards estimating the response amplitude operators (RAOs) ... -
Data-Driven Methodology for the Analysis of Operational Profile and the Quantification of Electrical Power Variability on Marine Vessels
(Journal article; Peer reviewed, 2018)Measurements from the on-board systems of marine vessels are increasingly available for data analysis and are growing in importance as the ship industry enters a phase of digitalization. The purposes of the data analysis ... -
Data-driven modeling of hydrodynamic loading using NARX and harmonic probing
(Peer reviewed; Journal article, 2023)Optimizing floating wind turbines and their mooring systems requires validated computational models that predict wave-frequency and low-frequency hydrodynamic loads. Low-frequency loads are crucial for determining extreme ... -
Data-driven modelling and estimation of losses in shipboard electrical power components based on machine learning
(Master thesis, 2022)Målet med denne oppgaven er å undersøke muligheten for å modellere kraftan- legg om bord på skip ved hjelp av maskinlæring På grunn av stadig strengere forskrifter fra marine autoritetsorganisasjoner og regjeringer verden ... -
Data-Driven Prediction of Vortex-Induced Vibration Response of Marine Risers Subjected to Three-Dimensional Current
(Chapter, 2019)Slender marine structures such as deep-water marine risers are subjected to currents and will normally experience Vortex Induced Vibrations (VIV), which can cause fast accumulation of fatigue damage. The ocean current is ...