Browsing NTNU Open by Author "Paulsen, Christian Oen"
Now showing items 1-7 of 7
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Ballistic impact resistance of additive manufactured high-strength maraging steel: An experimental study
Costas, Miguel; Edwards-Mowforth, Maisie; Kristoffersen, Martin; Teixeira-Dias, Filipe; Brøtan, Vegard; Paulsen, Christian Oen; Børvik, Tore (Peer reviewed; Journal article, 2021)Maraging steel is a low carbon steel known for its ultra high-strength after heat treatment. In combination with Additive Manufacturing (AM), the properties of maraging steel indicate potential to enable complex geometries ... -
Comparing In Situ DIC Results from an Etched Surface with a Gold Speckled Surface
Paulsen, Christian Oen; Fagerholt, Egil; Børvik, Tore; Westermann, Ida (Journal article; Peer reviewed, 2019)A ferrite-pearlite two-phase steel was investigated using in situ scanning electron microscope (SEM) tensile testing combined with digital image correlation (DIC). Two different speckled patterns were used and compared. ... -
Experimental Characterization of Two-Phase Steels
Paulsen, Christian Oen (Doctoral theses at NTNU;2019:275, Doctoral thesis, 2019)This thesis consists of several in-situ scanning electron microscope (SEM) tensile test studies of different two- phase steels. Three different two-phase steels have been investigated: a NVE36 plate steel, a dual-phase ... -
The Hambergfjellet Formation on Bjørnøya – sedimentary response to early Permian tectonics on the Stappen High
Grundvåg, Sten-Andreas; Strand, Mathias; Paulsen, Christian Oen; Simonsen, Bjørn; Røstad, Jostein; Mørk, Atle; Mørk, Mai Britt Engeness (Peer reviewed; Journal article, 2023)On Bjørnøya, the exhumed crest of the Stappen High, the lower Permian (Cisuralian) Hambergfjellet Formation represents the only exposed part of the Bjarmeland Group carbonate platform, which occurs widely elsewhere in the ... -
Microstructure Evolution in Super Duplex Stainless Steels Containing σ-Phase Investigated at Low-Temperature Using In Situ SEM/EBSD Tensile Testing
Paulsen, Christian Oen; Broks, Runar Larsen; Karlsen, Morten; Hjelen, Jarle; Westermann, Ida (Journal article; Peer reviewed, 2018)An in situ scanning electron microscope (SEM) study was conducted on a super duplex stainless steel (SDSS) containing 0%, 5% and 10% σ-phase. The material was heat treated at 850 °C for 12 min and 15 min, respectively, to ... -
On the ballistic perforation resistance of additive manufactured AlSi10Mg aluminium plates
Kristoffersen, Martin; Costas, Miguel; Koenis, Tim; Brøtan, Vegard; Paulsen, Christian Oen; Børvik, Tore (Journal article; Peer reviewed, 2019)Materials and structures made through additive manufacturing (AM) have received a lot of attention lately due to their flexibility and ability to customize structural components of complex geometry. One range of application ... -
Recrystallisation Behaviour in Extruded Profiles of Non-Dispersoid Containing Al-Mg-Si Alloys
Paulsen, Christian Oen (Master thesis, 2015)Hot extrusion of non-dispersoid containing aluminium alloys commonly ends with a fully or partially recrystallised grain structure. However, the recrystallisation mechanisms, whether static or dynamic (taking place during ...