Browsing Institutt for marin teknikk by Title
Now showing items 1116-1135 of 3587
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Early age cycling in the grout connection of an offshore wind jacket structure
(Master thesis, 2020)The yearly installed percentage of offshore wind jacket substructures is rising. The most common installation method for a jacket structure nowadays starts by driving the foundation piles in the seabed through a pre-piling ... -
Early Marine Systems' Design - Cracking the wicked problem - The case of a novel biomass harvesting vessel
(Journal article; Peer reviewed, 2024)Several IMDC contributions have argued for a better approach to capture stakeholders' expectations in vessel newbuilding projects' execution. The appropriate processes of requirements elucidation are, however, often forgotten ... -
Early Stage Decisions in Marine Systems Design for Deep-Sea Mining
(Peer reviewed; Journal article, 2022)This article studies the prospects for deep seabed mining as a future viable maritime industry, and discuss the commercial, operational, and technical viability of deep seabed mining. By the use of a business development ... -
Economic Control Design for Hybrid Electric Ships
(Master thesis, 2020)Ei av dei store globale utfordringane vi står overfor er miljøendringar, med aukande temperaturar og meir ekstremvêr. Den maritime industrien er ein stor bidragsytar til verdas utslepp, med omkring3%av både dei årlege ... -
Effect of atmospheric stability on the dynamic wake meandering model applied to two 12 MW floating wind turbines
(Peer reviewed; Journal article, 2023) -
Effect of change of propulsion system on M/S Midnatsol
(Master thesis, 2017)In 2016 the costal liner M/S Midnatsol had her main thruster system changed from the twin fixed pitch contrarotating thruster system Contaz to the twin controllable pitch Azipull thruster system. The purpose of this thesis ... -
Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch
(Journal article; Peer reviewed, 2022) -
Effect of Damping on the Dynamic Responses of a Floating Bridge in Wind and Waves
(Chapter, 2020)The E39 Coastal Highway Route Project is being developed to reduce the travel time between Trondheim and Kristiansand in Norway and several ferry connections are planned to be replaced by floating bridges or submerged ... -
Effect of drift angle on added resistance of wind assisted ships
(Master thesis, 2021)Wind assisted propulsion vessels have presented itself as a revolutionary alternative to reduce emissions in a vessel. With the increasing regulations on emission control, many companies have started adopting wind assisted ... -
Effect of environmental modelling and inspection strategy on the optimal design of floating wind turbines
(Peer reviewed; Journal article, 2021)In order to reduce design conservatism and consequently the cost of energy, appropriate and cost-optimal safety factors should be derived, in light of environmental load uncertainties and lifetime costs. In the present ... -
Effect of Flap Type Wave Energy Converters on the Response of a Semi-Submersible Wind Turbine in Operational Conditions
(Chapter; Peer reviewed, 2014)In the present paper the effect of flap type wave energy converters on the response of a floating semi-submersible wind turbine is investigated and reported. Two different layouts with regard to the number of rotating flaps ... -
Effect of floater flexibility on global dynamic responses of a 15-MW semi-submersible floating wind turbine
(Peer reviewed; Journal article, 2023)Floater structural flexibility plays a significant role in accurate predictions of global dynamic responses of floating wind turbines (FWTs), especially for ultra-large wind turbines with increasing size and cost-effective ... -
Effect of hydrodynamic load modelling on the response of floating wind turbines and its mooring system in small water depths
(Journal article; Peer reviewed, 2018)A large number of offshore wind turbines have been installed recently, mostly in water depth up to 30 m based on monopile foundations. It is expected that floating wind turbine becomes more competitive than bottom fixed ... -
Effect of lay angle of anti-buckling tape on lateral buckling behavior of tensile armors
(Chapter; Peer reviewed, 2015)During deep water flexible pipe installation, the pipe is normally free hanging in empty condition from the installation vessel to the seabed. This will introduce large hydrostatic forces to the pipe causing true wall ... -
Effect of long periods of corrosion on the fatigue lifetime of offshore mooring chain steel
(Peer reviewed; Journal article, 2022)R4-grade mooring chain steel specimens were subjected to alternating phases of saltwater corrosion and air fatigue to replicate seasonal load variations on chains in service. No significant difference in fatigue lifetimes ... -
Effect of low temperature on fatigue crack propagation rates of DH36 steel and its butt weld
(Peer reviewed; Journal article, 2019)As common marine steel for polar ships, the fatigue crack propagation rates of DH36 steel at low temperature have a crucial influence on the evaluation of the fatigue strength of polar ships. The purpose of this paper is ... -
Effect of modelling inhomogeneous wave conditions on structural responses of a very long floating bridge
(Peer reviewed; Journal article, 2021)Floating bridges are suitable for connecting land parcels separated by wide and deep waterbodies. However, when the span of the crossing becomes very long, the water environment exhibits inhomogeneities which introduce ... -
Effect of precipitates on static and fatigue strength of a severely forged aluminum alloy 1570C
(Journal article; Peer reviewed, 2018)Bulk billets from commercial ingots of the alloy 1570C with different size of aluminides of transition metals were subjected to severe deformation up to the equivalent strain e~24 via multi-step isothermal forging (MIF) ... -
Effect of ship speed on ship’s ice resistance with ship’s vertical motions included
(Chapter, 2013)In this paper, the relations between ice resistance, shipspeed and ship motions are investigated with a numericalmodel simulating the icebreaking process with ship'smotions in 6 degrees of freedom (DOF). The coupledmotions ... -
Effect of ship speed on ship’s ice resistance with ship’s vertical motions included
(Chapter, 2013)In this paper, the relations between ice resistance, shipspeed and ship motions are investigated with a numericalmodel simulating the icebreaking process with ship'smotions in 6 degrees of freedom (DOF). The coupledmotions ...