Browsing NTNU Open by Author "Vedvik, Nils Petter"
Now showing items 1-20 of 53
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A comprehensive numerical investigation of the impact behaviour of an offshore wind turbine blade due to impact loads during installation
Verma, Amrit Shankar; Vedvik, Nils Petter; Gao, Zhen (Journal article, 2019)For installing offshore wind turbines into deep waters, use of floating crane vessels is essential. One of the major challenges is their sensitivity to wave-induced vessel and crane tip motions, which can cause the impact ... -
A Global-local Damage Assessment Methodology for Impact Damage on Offshore Wind Turbine Blades during Lifting Operations
Verma, Amrit Shankar; Haselbach, Philipp Ulrich; Vedvik, Nils Petter; Gao, Zhen (Chapter, 2018)Lifting the latest generation offshore wind turbines using floating crane vessels is extremely challenging. This comes with an elevated risk of blades impacting the tower or surrounding structures due to excessive crane ... -
A new method for assessing anisotropy in fused deposition modeled parts using computed tomography data
Tronvoll, Sigmund Arntsønn; Vedvik, Nils Petter; Elverum, Christer Westum; Welo, Torgeir (Journal article; Peer reviewed, 2019)Voids in fused deposition modeled (FDM) parts are assumed to be a key driver for their anisotropic behavior. However, these assumptions are based on investigations of voids using only 2D data (microscopy images). This paper ... -
Aerodynamic Package for NTNUs Formula Student Car: From Design to Prototype
Eriksrud, Sigbjørn Erling (Master thesis, 2013)Prototyping is a task with unknown challenges. The necessary steps for producing a prototype of an aerodynamic package for application in FSAE were evaluated. The design is based upon the author?s project work during the ... -
Analysis of a Novel Wedge-Burst Test Design with Integrated Load Cells: A Comparison to the Split-Disk Test and an Investigation of the Effects of an Elastomeric Distributor
Stenseth, Thomas (Master thesis, 2020)En wedge-burst (kile-burst) test med integrerte lastceller har blitt sammenlignet med en split-disk test ved hjelp av finite element analyser (FEA). Oppførselen til sylinderspenningen og den kalkulert spenning for begge ... -
Buckling due to external pressure of a composite tube measured by Rayleigh optical backscatter reflectometry and analyzed by finite elements
Hugaas, Eivind; Vedvik, Nils Petter; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)There is a growing interest in replacing steel tubes that operate in high pressure and high temperature environments with composite tubes. Such applications can include drilling risers and drill strings for the offshore ... -
Buckling due to External Pressure of Tubes Measured by Rayleigh Optical Backscatter Reflectometry.
Martin de Saavedra Navarro, Enrique (Master thesis, 2017)This master s thesis should focus on measuring the buckling suffered by tubes from external pressure. The technique to be studied, is Rayleigh optical backscatter reflectometry (OBR), which through swept wavelength ... -
Buckling of cylindrical members with respect to axial loads
Lund, Julie (Master thesis, 2014)Managing technology and taking advantage of the opportunities to further development is essential to ensure increased hydrocarbon recovery and barrier security for upstream energy companies. Interwell is a well intervention ... -
Bøyningsmønstre for sluttbrukeren
Langli, Ingeborg Helen (Master thesis, 2019)Å gi en plate nye egenskaper kun ved å kutte et mønster inn i den kan ha mange bruksområder som kan oppdages av kreative sinn, både hos fagfolk og lekmenn. Til dette formålet må bøyningsmønstre gjøres mer tilgjengelige. ... -
Comparison of numerical modelling techniques for impact investigation on a wind turbine blade
Verma, Amrit Shankar; Vedvik, Nils Petter; Haselbach, Philipp Ulrich; Gao, Zhen; Jiang, Zhiyu (Journal article; Peer reviewed, 2019)Wind turbine blades are exposed to numerous impact risks throughout their lifetimes. The impact risks range from bird collisions during operation to impacts with surrounding structures at the time of transportation and ... -
Composite Materials in a Novel Tidal Turbine Design
Brigtsen, Thomas (Master thesis, 2013)This thesis aims to optimize the design of a tidal turbine, by replacing steel components with composites. Initially all major turbine components such as axle, rotor and stator were considered, but in guidance with supervisor ... -
Composite Sandwich Design for Formula SAE Monocoque
Sanchez, Christopher Medina (Master thesis, 2013)This paper is an approach in how to design a composite sandwich laminate, that is to be used for an open wheeled race car with a monocoque chassis. The composite sandwich design of the monocoque must be in accordance with ... -
Damage assessment for GRP submerged buoyancy
Duus, Andre (Master thesis, 2016)Submerged buoyancy is used for many different subsea applications, especially with reliving connections between the seabed and surface installations. As CSUB specialises in composites structures for subsea installations, ... -
Design and development of a Remotely Operated Vehicle for inspection of- and fish collection in Aquaculture Facilities
Myklebost, Magnus Rogne (Master thesis, 2014)A concept for a lightweight Remotely Operated Vehicle (ROV) named the Manta was designed for inspection of the net cages and collection of dead fish at aquaculture facilities. The current thesis presents the initial ... -
Design and testing of composite tubes subjected to external pressure in oil well environment
Braaen, Bernt Christian (Master thesis, 2013)Carbon fiber reinforced polymers are advanced materials with unique material properties that are being used in an increasingly number of industrial applications. In well intervention the high stiffness to weight ratio as ... -
Design of a Composite Rotor Structure for a Tidal Turbine Generator
Koa, Jon Ivar (Master thesis, 2014)Reduction targets for greenhouse gas emissions and the need of national energy security has led to a push in R&D of renewable energy sources such as tidal power the recent years. SmartMotor AS has engineered a tidal energy ... -
Design of Composite Tubes Applied in Well Intervention: Komposittrør for anvendelse i oljebrønner
Voldnes, Dan Eirik (Master thesis, 2012)Carbon composite materials and structures have low weight, high stiffness, high strength and chemical resistance. Throughout this master thesis a feasibility study to utilize carbon composites in tubes, designed to withstand ... -
Design of Composite Wing Kite
Moen, Sigrid (Master thesis, 2016)New methods to produce environmentally-friendly energy, is a growing technology area. By using wind at high altitudes, Kitemill wants to be a part of this revolution. Operations in the air requires high quality and security ... -
Dimensjonering, analyse og testing av inserts i karbonfiber kompositt sandwich chassis
Haugum, Henrik; Pløen, Morten (Master thesis, 2014)I arbeidet med denne avhandlingen har det blitt utført et omfattende arbeid på ulike aspekter ved utviklingen av et monocoque chassis designet for å konkurrere i Formula Student. Analyse, dimensjonering og produksjon er ... -
Dimensjonering, analyse og testing av inserts i karbonfiber kompositt sandwich chassis
Haugum, Henrik; Pløen, Morten (Master thesis, 2014)I arbeidet med denne avhandlingen har det blitt utført et omfattende arbeid på ulike aspekter ved utviklingen av et monocoque chassis designet for å konkurrere i Formula Student. Analyse, dimensjonering og produksjon er ...