Browsing Fakultet for ingeniørvitenskap (IV) by Title
Now showing items 22914-22933 of 23135
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Wayfinding in Virtual Environments
(Master thesis, 2020)Navigasjonsoppgaver er en viktig del av folks hverdag. Når man skal til skole og jobb, eller reiser til nye steder er navigasjon nødvendig. Til tross for at folk er vant til dette konseptet i den virkelige verden, er ... -
A weak-scatterer potential flow theory-based model for the hydroelastic analysis of offshore wind turbine substructures
(Peer reviewed; Journal article, 2021)This paper examines the hydroelastic response of a monopile structure, supporting an offshore wind turbine. A new numerical simulation tool is presented, coupling a nonlinear potential flow solver to a structural model ... -
Weakly nonlinear broadband and multi-directional surface waves on an arbitrary depth: A framework, Stokes drift, and particle trajectories
(Peer reviewed; Journal article, 2021)Surface gravity waves in coastal waters are broadband and multi-directional, whose quadratic properties are of considerable engineering and scientific interest. Based on a Stokes expansion and an envelope-type framework, ... -
Weakly nonlinear surface waves on vertically sheared currents
(Doctoral theses at NTNU;2024:57, Doctoral thesis, 2024)Extreme waves, also known as rogue waves, have much larger heights than surrounding waves, which are of great danger to ships and coastal structures. A subsurface shear current is able to change the properties of the surface ... -
Weakly nonlinear transient waves on a shear current: ring waves and skewed Langmuir rolls
(Journal article; Peer reviewed, 2019)We investigate the weakly nonlinear dynamics of transient gravity waves at infinite depth under the influence of a shear current varying linearly with depth. The shear field makes this problem three-dimensional and rotational ... -
Wear and corrosion properties of steels used in Tunnel Boring Machines
(Master thesis, 2012)In this master thesis experiments were conducted to determine the abrasion-corrosion properties of a steel designed for TBM tunnelling. This was done by three different tests, reciprocal ball-on-plate, rubber wheel and ... -
Wear bushing for drill through subsea tree
(Master thesis, 2010)Aker Solutions AS develops and manufactures Christmas trees. A version of the Christmas tree, called Horizontal Christmas tree, makes drill through operation possible. As part of Aker Solutions AS ongoing project ... -
Weather optimal dynamic positioning of underactuated AUVs using output feedback control
(Journal article, 2006)In this paper we present an output feedback control system for dynamic positioning of underactuated AUVs. The control objective is to maintain a desired distance to the target while orienting the vehicle towards the target ... -
Weather Routing of Supply Vessels in the North Sea - Solving the Supply Vessel Weather Routing Problem
(Master thesis, 2015)This thesis is concerned with defining and solving the supply vessel weather routing problem. The particular problem in focus will be Statoil's supply circuit in the middle North Sea, including the Johan Sverdrup oil field. ... -
Weathering Performance of Spruce Coated with Water Based Acrylic Paint Modified with TiO2 and Clay Nanoparticles
(Journal article; Peer reviewed, 2013)This work examines the effect of wood specimens coated with water based acrylic coatings modified with TiO2 and clay nanoparticles against weathering strain. The long-term durability of the specimens towards climate strain ... -
Web Based Customized Design
(Master thesis, 2013)This thesis studies the methods needed to create a web based application to remotely customize a CAD model. This includes customizing a CAD model by using a graphical user interface to be able to remotely control the inputs ... -
Wedge splitting test of wood for fracture parameters estimation of Norway Spruce
(Peer reviewed; Journal article, 2020)Crack evolution in wood from Norway Spruce during mode I wedge splitting tests was measured using a Digital Image Correlation (DIC) system. The resulting series of deformation fields were post-processed in order to obtain ... -
Weight and power optimization of steam bottoming cycle for offshore oil and gas installations
(Journal article; Peer reviewed, 2014)Offshore oil and gas installations are mostly powered by simple cycle gas turbines. To increase the efficiency, a steam bottoming cycle could be added to the gas turbine. One of the keys to the implementation of combined ... -
Weight estimation of ice strengthened hull structures
(Master thesis, 2020)The prevailing trend in ship design has been shifting towards holistic design process. This means that the different design aspects have all been incorporated together in order to find the design that is successful in all ... -
Weight Estimation of Steam Cycle for CO2 Capture System on Offshore Oil and Gas Installation
(Master thesis, 2016)Climate change due to increasing anthropogenic CO2 emissions is a major concern both in Norway, and globally. Greater environmental focus and increased taxes on emitted CO2 have led to corporate efforts on reducing CO2 ... -
Weight Margins and Flexibility in Offshore Rigs
(Master thesis, 2013)The subject of this paper is the use of weight margins in the design and fabrication of large offshore oilrigs. Margins are a way of increasing the freedom of choice of the designers and a method of increasing the overall ... -
Weightless Neural Network-Based Detection and Diagnosis of Visual Faults in Photovoltaic Modules
(Peer reviewed; Journal article, 2023)The present study introduces a novel approach employing weightless neural networks (WNN) for the detection and diagnosis of visual faults in photovoltaic (PV) modules. WNN leverages random access memory (RAM) devices to ... -
Weinberg’s 3HDM potential with spontaneous CP violation
(Peer reviewed; Journal article, 2023)We study the potential of Weinberg’s Z2 × Z2-symmetric three-Higgs-doublet model. The potential is designed to accommodate CP violation in the scalar sector within a gauge theory, while at the same time allowing for natural ... -
Welding mechanism and welding quality in extrusion welding
(Master thesis, 2010)A short theoretical foundation is presented that covers; heat treatment of aluminium to T6 condition, a brief overview of conditions that affect extrusion welding in aluminium and a few well-known methods for mechanical ... -
Welding on Power Pylons in Aluminium
(Master thesis, 2016)This master thesis has investigated the behaviour of aluminium cylinders subjected to compression for both unwelded and welded cross sections. Three different combinations of material and geometry has been tested in the ...