Blar i NTNU Open på forfatter "Akselsen, Odd Magne"
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A Combined Gurson-RKR Model for the Ductile to Brittle Transition in Steel
Holte, Ingrid (Master thesis, 2017)The goal of this work was to establish a simulation scheme that incorporates both ductile and brittle fracture modes with respect to temperature in order to describe the aforementioned toughness dependency on temperature. ... -
A coupled diffusion and cohesive zone modelling approach for numerically assessing hydrogen embrittlement of steel structures
Jemblie, Lise; Olden, Vigdis; Akselsen, Odd Magne (Journal article; Peer reviewed, 2017)Simulation of hydrogen embrittlement requires a coupled approach; on one side, the models describing hydrogen transport must account for local mechanical fields, while on the other side, the effect of hydrogen on the ... -
A review of cohesive zone modelling as an approach for numerically assessing hydrogen embrittlement of steel structures.
Jemblie, Lise; Olden, Vigdis; Akselsen, Odd Magne (Journal article, 2017)Simulation of hydrogen embrittlement requires a coupled approach; on one side, the models describing hydrogen transport must account for local mechanical fields, while on the other side, the effect of hydrogen on the ... -
A special notched tensile specimen to determine the flow stress-strain curve of hardening materials without applying the Bridgman correction
Tu, Shengwen; Ren, Xiaobo; Nyhus, Bård; Akselsen, Odd Magne; He, Jianying; Zhang, Zhiliang (Journal article; Peer reviewed, 2017)Structural integrity assessment of weldments requires the input of flow stress-strain curve of each individual material zone. To cope with these challenges, a cylindrical cross weld tensile specimen with a notch located ... -
Additive manufacture of superduplex stainless steel using WAAM
Eriksson, Magnus Carl Fredrik; Lervåg, Malin; Sørensen, Camilla; Robertstad, Andreas; Brønstad, Bård M.; Nyhus, Bård; Aune, Ragnhild; Ren, Xiaobo; Akselsen, Odd Magne (Journal article; Peer reviewed, 2018)Superduplex stainless steels have been used in the oil and gas industry for a couple of decades due to the combination of excellent mechanical properties and corrosion resistance. The present investigation addresses the ... -
Additive Manufacturing with Superduplex Stainless Steel Wire by CMT Process
Lervåg, Malin; Sørensen, Camilla; Robertstad, Andreas; Brønstad, Bård M.; Nyhus, Bård; Eriksson, Magnus Carl Fredrik; Aune, Ragnhild; Ren, Xiaobo; Akselsen, Odd Magne; Bunaziv, Ivan (Journal article; Peer reviewed, 2020)For many years, the oil and gas industry has utilized superduplex stainless steels due to their high strength and excellent corrosion resistance. Wire arc additive manufacturing (WAAM) was used with superduplex filler wire ... -
Application of laser-arc hybrid welding of steel for low-temperature service
Bunaziv, Ivan; Akselsen, Odd Magne; Frostevarg, Jan; Kaplan, Alexander F.H. (Peer reviewed; Journal article, 2019)Laser-arc hybrid welding (LAHW) is more often used in shipbuilding and oil and gas industries in recent years. Its popularity arises due to many advantages compared to conventional arc welding processes. The laser beam ... -
Characterization of Non-Metallic Inclusions in Ferritic Weld Metals for Arctic Applications
Hjeltereie, Isabella Juul (Master thesis, 2015)In Arctic applications, structural steel weldments will be subjected to low temperatures, in the worst cases approaching -60 °C. This may be a major challenge, due to the ductile to brittle transition taking place at certain ... -
Cohesive zone modelling of hydrogen induced cracking on the interface of clad steel pipes
Jemblie, Lise; Olden, Vigdis; Maincon, Philippe Emmanuel; Akselsen, Odd Magne (Journal article; Peer reviewed, 2017)A coupled finite element hydrogen diffusion and cohesive zone modelling approach has been applied to simulate hydrogen induced fracture initiation in a hot rolled bonded clad steel pipe. The results are compared to ... -
Comparative study of eutectic Al-Si alloys manufactured by WAAM and casting
Langelandsvik, Geir; Horgar, Annbjørg; Furu, Trond; Roven, Hans Jørgen; Akselsen, Odd Magne (Peer reviewed; Journal article, 2020)Wire and arc additive manufacturing (WAAM) of metallic materials is expected to become part of the new industrial revolution. The possibilities for complex designs and superior mechanical properties can in many cases replace ... -
Comparative Study of Mechanical Properties and Microstructure of Components Made by Casting and Wire + Arc Additive Manufacturing of Eutectic Al-12Si Alloy
Horgar, Annbjørg (Master thesis, 2019)Masteroppgaven vurderer sammenhengen mellom additiv tilvirkning ved lysbuesveising med trådmater (eng. Wire and Arc Additive Manufacturing, fork. WAAM) og støping av aluminium legert med silisiuminnhold (Si) på 12% (Al-12Si). ... -
Comparative Study of Mechanical Properties and Microstructure of Components Made by Casting and Wire + Arc Additive Manufacturing of Eutectic Al-12Si Alloy
Horgar, Annbjørg (Master thesis, 2019)Masteroppgaven vurderer sammenhengen mellom additiv tilvirkning ved lysbuesveising med trådmater (eng. Wire and Arc Additive Manufacturing, fork. WAAM) og støping av aluminium legert med silisiuminnhold (Si) på 12% (Al-12Si). ... -
Complete Simulation Models to Describe the Ductile-to-Brittle Transition of Steels for Arctic Applications - A Beremin-Gurson Approach
Scheide, Henrik Andre (Master thesis, 2018)The toughness of common structural steels is often affected by temperature changes where low service temperatures frequently promote brittle material characteristics. Low service temperatures often occur in the Arctic ... -
Defining Local Stress-Strain Fields in Ductile Components under Cyclic Loading
Hofgaard, Marthe Elise (Master thesis, 2018)Subsea power cables consist of an extruded lead alloy sheathing, which act as a protective layer against water penetration. The lack of research and framework for advanced fatigue calculations of lead has made it difficult ... -
Development of Al-TiC Wire Feedstock for Additive Manufacturing by Metal Screw Extrusion
Langelandsvik, Geir; Grandcolas, Mathieu; Skorpen, Kristian Grøtta; Furu, Trond; Akselsen, Odd Magne; Roven, Hans Jørgen (Peer reviewed; Journal article, 2020)The development of customised aluminium alloys for welding and additive manufacturing (AM) is proposed to solve several quality issues and to enhance the mechanical integrity of components. The introduction of ceramic grain ... -
EBSD Quantification of Retained Austenite in 9% Ni Steel Related to Thermal Treatments
Jahrsengene, Gøril; Wenn, Maia; Karlsen, Morten; Westermann, Ida; Akselsen, Odd Magne; Hjelen, Jarle (Chapter, 2015)The present work has been to study the effect of different finalizing preparation techniques on the amount of retained austenite measured with Electron Backscatter Diffraction (EBSD) and X-Ray-Diffraction (XRD) analysis. ... -
Effect of Low Temperature Tensile Properties on Crack Driving Force for Arctic Applications
Dahl, Bjørn Augdal (Master thesis, 2016)Many petroleum companies expand their activities further north towards the Arctic region, resulting in design temperatures down to -60 °C, which is much lower than what is usual for most current petroleum installations. ... -
Effect of low temperature tensile properties on crack driving force for Arctic applications
Dahl, Bjørn Augdal; Ren, Xiaobo; Akselsen, Odd Magne; Nyhus, Bård; Zhang, Zhiliang (Journal article; Peer reviewed, 2017)Many petroleum companies expand their activities further north towards the Arctic region, resulting in design temperatures down to −60 °C, which is much lower than what is usual for most current petroleum installations. ... -
Effect of Microstructure and Temperature on HydrogenDiffusion and Trapping in X70 grade Pipeline Steel and itsWeldments
Skjellerudsveen, Magnus; Akselsen, Odd Magne; Olden, Vigdis; Johnsen, Roy; Smirnova, Anna (Chapter, 2010) -
Effect of Sigma Phase in Wire Arc Additive Manufacturing of Superduplex Stainless Steel
Akselsen, Odd Magne; Bjørge, Ruben; Ånes, Håkon Wiik; Ren, Xiaobo; Nyhus, Bård (Peer reviewed; Journal article, 2021)In the present study, the thermal program in wire and arc additive manufacturing has been varied in terms of heat input and interpass temperature. Three walls were completed with subsequent Charpy V impact toughness and ...