Blar i NTNU Open på forfatter "Akselsen, Odd Magne"
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Evaluation of Welded Clad Pipe - Microstructures and Properties
Bjaaland, Helena (Master thesis, 2015)Clad pipes are used in the oil and gas industry for transportation of corrosive substances. Maintenance, repairs and tie-in connections to existing subsea structures is done by hyperbaric welding. There is per today no ... -
Evaluation of Welded Clad Pipe - Properties and Simulations
Utvær, Andreas (Master thesis, 2017)Pipelines are an essential part of the oil and gas offshore industry, for transporting unprocessed oil and gas from the seabed to the oil platform and to the mainland. The unprocessed oil and gas leaves a corrosive ... -
Fatigue Properties of Corrugated Sheathing for Subsea Power Cables
Fugløy, Bjørnar (Master thesis, 2017)A high voltage subsea power cable consists of several different layers with different purposes. One layer is a metallic tubular sheathing with the main purpose to act as a moisture-blocking barrier to prevent moisture ... -
Filler metal distribution and processing stability in laser-arc hybrid welding of thick HSLA steel
Bunaziv, Ivan; Wenner, Sigurd; Ren, Xiaobo; Frostevarg, Jan; Kaplan, Alexander F.H.; Akselsen, Odd Magne (Journal article; Peer reviewed, 2020)Welds made by high power laser beam have deep and narrow geometry. Addition offiller wire by the arc source,forming the laser-arc hybrid welding (LAHW) process, is very important to obtain required mechanical prop-erties. ... -
Fracture toughness and hydrogen embrittlement susceptibility on the interface of clad steel pipes with and without a Ni-interlayer
Jemblie, Lise; Bjaaland, Helena; Nyhus, Bård; Olden, Vigdis; Akselsen, Odd Magne (Journal article, 2017)The objective of the present work has been to study the fracture properties of the interface between clad and base material of two 316 L austenitic stainless steel - X60/X65 carbon steel hot roll bonded clad pipes; with ... -
Hybrid Welding of 45 mm High Strength Steel Sections
Bunaziv, Ivan; Frostevarg, Jan; Akselsen, Odd Magne; Kaplan, Alexander F.H. (Journal article; Peer reviewed, 2017)Thick section welding has significant importance for oil and gas industry in low temperature regions. Arc welding is usually employed providing suitable quality joints with acceptable toughness at low temperatures with ... -
Hydrogen embrittlement of clad steel pipes: Experiments and FE modelling
Jemblie, Lise (Doctoral theses at NTNU;2018:200, Doctoral thesis, 2018)Pipes with an inner layer of corrosion resistant alloy, so called clad pipes, are increasingly used in the oil and gas industry as en economical viable option for corrosion management, combining the mechanical properties ... -
Investigation of Low Temperature Toughness and Crack Initiation In Welded Structural Steels
Vadholm, Therese (Master thesis, 2014)A 420 MPa HSLA steel has been investigated. Instrumented Charpy impact tests and quasi-static CTOD tests have been performed on specimens of weld simulated Coarse Grained Heat Affected Zone (CGHAZ) and Intercritically ... -
Material and Fatigue Life Investigation of a Lead Alloy used as Sheathing in Subsea Power Cables
Fotland, Gaute (Master thesis, 2017)Subsea power cables are used to transport electricity offshore. They consist of several layers, where a lead sheathing is used as the water barrier layer. From reeling and installation, in addition to daily cycles from ... -
Mechanical properties of aluminium weldments FE simulations
Waaga, Trine (Master thesis, 2018)The low density of aluminium, resulting in a high strength-to-weight ratio, makes it a favourable material in several industries. Additionally, increasing use of aluminium will contribute to achieve more sustainable and ... -
Microstructure and Properties of Wire Arc Additive Manufacturing of Inconel 625
Akselsen, Odd Magne; Bjørge, Ruben; Ånes, Håkon Wiik; Ren, Xiaobo; Nyhus, Bård (Journal article; Peer reviewed, 2022)In the present investigation, wire arc additive manufacturing of Inconel 625 was carried out with the cold metal transfer variant of the metal inert gas process. The heat input varied between 0.46 and 0.63 kJ/mm, which is ... -
Nanomekanisk prøving av stål: Er mindre alltid sterkere?
Haugen, Veronica Gausel (Master thesis, 2012)Gjennom dette arbeidet, er nanomekaniske kompresjonsegenskaper undersøkt for tre forskjellige materialer: To stål legeringer og et renjern. Pillarer av varierende størrelse, fra diameter 100nm til 2um, er fabrikkert ved ... -
Review of Aluminum Alloy Development for Wire Arc Additive Manufacturing
Langelandsvik, Geir; Akselsen, Odd Magne; Furu, Trond; Roven, Hans Jørgen (Peer reviewed; Journal article, 2021)Processing of aluminum alloys by wire arc additive manufacturing (WAAM) gained significant attention from industry and academia in the last decade. With the possibility to create large and relatively complex parts at low ... -
SMALL-SCALE FRACTURE AND ARREST TESTING OF IRON AT LOW TEMPERATURES
Snartland, Brage Dahl (Doctoral theses at NTNU;2018:244, Doctoral thesis, 2018)The industrial activity in the Arctic is expanding. An ever-increasing demand for energy is forcing the production of oil further north, where accidents may have severe ecological ramifications. Rough climate conditions ... -
Wire and Arc Additive Manufactured in the Marine Sector - A Study of WAAM and the Deposition of Marine Grade Metals
Paulseth, Sindre Moen (Master thesis, 2018)Additive manufacturing has in the recent years become more accessible, and the areas of potential use have expanded. This thesis looks into the effect on two marine grade metals, Inconel 625 and Super Duplex stainless ... -
Wire and Arc Additive Manufacturing with TiC-Nanoparticle Reinforced AA5183 Alloy
Langelandsvik, Geir; Ragnvaldsen, Olav; Flåm, Jan Eskil; Akselsen, Odd Magne; Roven, Hans Jørgen (Peer reviewed; Journal article, 2020)Wire and arc additive manufacturing of aluminium-ceramic composites shows great potential to produce high strength materials. By incorporation of nanoparticles in the feedstock wire, fine-grained material with low ...