Browsing NTNU Open by Author "Skilbred, Ellen Synnøve"
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Corrosion of Nickel-Aluminium Bronze - How does the different alloying elements effect the corrosion properties?
Skilbred, Ellen Synnøve (Master thesis, 2016)This thesis examines the effect of copper, aluminium, iron and nickel on the corrosion properties of Nickel-Aluminium bronze (NAB) in seawater. NAB has a complex microstructure consisting of a copper-rich phase, α, and ... -
Corrosion, hydrogen uptake and environmentally assisted cracking of flexible pipe steel armour wires
Skilbred, Ellen Synnøve (Doctoral theses at NTNU;2022:159, Doctoral thesis, 2022)Flexible pipes are widely used in oil and gas applications. They consist of several metallic and polymeric layers, including a layer of tensile armour wires made from high-strength carbon steels. The armour wires are closely ... -
Heat to H2 - Hydrogen production in a closed loop RED-system
Haga, Ida Johanne Molvik (Master thesis, 2018)Reverse electrodialysis (RED) in an alternative for production of storable, renewable energy for the future. In the context of climate change, fossil fuel scarcity and international agreements such as the Paris Treaty, ... -
Heat to H2: Using Waste Heat to Set Up Concentration Differences for Reverse Electrodialysis Hydrogen Production
Skilbred, Ellen Synnøve; Krakhella, Kjersti Wergeland; Haga, Ida Johanne; Pharoah, Jon; Hillestad, Magne; del Alamo Serrano, Gonzalo; Burheim, Odne Stokke (Journal article; Peer reviewed, 2018)The present work suggests two concepts for producing hydrogen by reverse electrodialysis. Reverse electrodialysis is a technology that uses concentration differences to create electrical energy. In this work, the energy ... -
Hydrogen embrittlement suceptibility of steel armour wires for flexible pipes
Skilbred, Ellen Synnøve; Lotz, Signe Aarthun; Johnsen, Roy (Peer reviewed; Journal article, 2020)Flexible pipes are frequently used both as flowlines and risers in the oil and gas industry. A flexible pipe has a complex structure consisting of layers of polymer and metallic materials. The armor wire layers – shielded ... -
Hydrogen uptake during active CO2-H2S corrosion of carbon steel wires in simulated annulus fluid
Skilbred, Ellen Synnøve; Palencsar, Simona; Dugstad, Arne; Johnsen, Roy (Peer reviewed; Journal article, 2022)The hydrogen uptake of five carbon steel wires exposed to a corrosive CO2/H2S environment where protective film formation was not favorable was measured. The hydrogen uptakes decreased with the accumulation of retained ... -
Susceptibility of Hydrogen Embrittlement of Carbon Steel Armour Wires for Use in Flexible Pipes
Lootz, Signe Aarthun (Master thesis, 2019)Fleksible rør brukes i olje- og gassindustrien for transport av hydrokarboner. I sentrum av rørene er et ringrom bestående av tettpakkede karbonstål-vaire. Ringrommet er beskyttet av indre og ytre termoplastiske skall for ... -
Wildfire fuel characteristics
Rosnes, Magne (Student paper, others, 2023)In recent years, frequency and intensity of wildfires have been increasing in Norway and Nordic countries, with small fires growing into potential megafires. The main goal of this project was to test representative ...