Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM): Nye registreringer
Viser treff 1-20 av 1741
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Assessing some statistical and physical modelling uncertainties of extreme responses for monopile-based offshore wind turbines, using metocean contours
(Peer reviewed; Journal article, 2024-02)This study examines the influence of probabilistic models for wave parameters in the joint environmental model and hydrodynamic/soil models on extreme mudline bending moments for monopile-based wind turbines at representative ... -
The effect of weak acids on active corrosion rate in top-of-line corrosion
(Peer reviewed; Journal article, 2024-07)The corrosion rate of pipelines in the petroleum industry is heavily influenced by the weak acids present in the production stream. In a series of experiments at 65 °C, weak acids enhanced the cathodic reaction currents, ... -
Dynamic response of a single point mooring submersible fish cages in waves and current
(Peer reviewed; Journal article, 2023)Submersible fish cages are designed for installing in the open sea sites that are subjected to violent sea conditions to reduce the hydrodynamic forces acting on the fish cages. To assess the dynamic responses of a single ... -
Dropped Object Impact Analysis of Subsea Pipelines
(Master thesis, 2024)This thesis investigates the structural behavior of an impact between a subsea pipeline and a tank with a handling frame. The primary focus has been on comparing the different thicknesses of the pipeline wall and different ... -
Dragged Anchors Interaction with Subsea Pipelines
(Master thesis, 2024) -
Extreme response analysis of a floating offshore wind turbine and Fatigue analysis of the mooring lines
(Master thesis, 2024)In this study, we evaluate the design of a floating offshore wind turbine mooring system for intermediate water depths of 60 meters. We also analyzed extreme load cases and fatigue analysis of the mooring lines. The mooring ... -
Dynamic analysis of gravity-type fish cages using XPBD algorithm
(Master thesis, 2024)The dynamic behaviors of fish cages are numerically studied to explore the safety issue of the aquaculture system. The hydrodynamic forces acting on the net panels are simplified into Morison forces acting on the net ropes. ... -
Endring i mikrostruktur for sveis som befinner seg i hverandres heat affected zone
(Bachelor thesis, 2024)Denne oppgaven tar for seg undersøkelsen av en sveist strukturell 30mm stålplate av kvalitet S355J2+N, bestående av to parallelle sveiser, med en avstand på 5mm mellom sveisene. Selve tilpassingen og sveisingen av denne ... -
Environmental Impact Assessment (EIA) of Increased Arctic Shipping
(Master thesis, 2024)The challenges arising in the Arctic related to climate change are creating new opportunities in the region. The melting and reduction of sea-ice covers is leading to an increase in maritime activities, especially Arctic ... -
Fatigue life assessment of steel bridges: Interaction effect of Environment - Assisted Cracking and traffic loads
(Master thesis, 2024)The purpose of this thesis is to investigate the fatigue life of a steel railway bridge in Norway. Fatigue life is usually determined by conventional approaches such as the λ-coefficient method or the Miner’s damage ... -
An approach for fatigue life assessment of a road bridge based on measured corrosion and actual traffic loading
(Peer reviewed; Journal article, 2023)Fatigue and corrosion play a significant role in the aging of steel bridges, especially in a marine environment. An absence of fatigue strength curves for details which are exposed to corrosive environments, realistic ... -
Structural Integrity of Flange Connection in Onshore Wind Turbine Towers: Investigating Premature Bolt Failures
(Bachelor thesis, 2024)Premature bolt failure on onshore wind turbine towers is a major issue and hamper field operation safety. As such, this article examines the structural integrity of 32CrB4 steel M56 high strength grade 10.9 flange connection ... -
A Control Algorithm of Active Wave Compensation System Based on the Stewart Platform
(Peer reviewed; Journal article, 2023)Aim at the actual engineering requirements of wind power operation and maintenance under complex sea conditions, a control method of the active wave compensation system for maintenance ships based on the Stewart platform ... -
Reuse of decommissioned offshore steel components for new buildings: A case study
(Peer reviewed; Journal article, 2023)Reuse process of structural steel members, which are extracted from decommissioned offshore platform, for new apartment building is presented in this paper. An index is introduced to assess the technical feasibility of the ... -
Numerical analysis of centrifugal water pump impeller under varying loads
(Peer reviewed; Journal article, 2023)Centrifugal pumps are widely used to move liquids from one place to another at varying pressure and flow rate, and to an elevated height for irrigation, water supply plants, and steam power plants. The load variations often ... -
Stability analysis of a granite-based geopolymer sealant for CO2 geosequestration: In-situ permeability and mechanical behavior while exposed to brine
(Peer reviewed; Journal article, 2024)When considering the use of geopolymers (GPs), as potential alternatives for Portland cement, high durability during exposure to brine at encountered downhole is a key requirement. This study delves into the response of a ... -
A novel design approach for estimation of extreme responses of a subsea shuttle tanker hovering in ocean current considering aft thruster failure
(Peer reviewed; Journal article, 2022)The subsea shuttle tanker (SST) is an innovative 33 600-ton underwater cargo tanker designed to transport CO2 to marginal fields. During offloading, the SST will approach and hover in the vicinity of the subsea well. A ... -
Safety design study for energy harvesters
(Peer reviewed; Journal article, 2023-10)Modern offshore and onshore green energy engineering includes energy harvesting—as a result, extensive experimental investigations, as well as safety and reliability analysis are crucial for design and engineering. For ... -
Bivariate statistics of floating offshore wind turbine dynamic response under operational conditions
(Peer reviewed; Journal article, 2022)FOWT (Floating offshore wind turbines) belong to the modern offshore wind energy industry generating green renewable energy. Accurate extreme loads and response prediction during power generation is an important design ... -
Scour and Burial of Spherical Bodies, Short Cylinders, and Truncated Cones Induced by Bichromatic and Bidirectional Waves
(Peer reviewed; Journal article, 2024)This article provides a method by which the scour and self-burial of spherical bodies, short cylinders, and truncated cones that are induced by bichromatic and bidirectional waves could be derived. The empirical scour and ...