• Application of laser-arc hybrid welding of steel for low-temperature service 

      Bunaziv, Ivan; Akselsen, Odd Magne; Frostevarg, Jan; Kaplan, Alexander F.H. (Journal article; Peer reviewed, 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 ...
    • 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 ...
    • Dry hyperbaric welding of HSLA steel up to 35 bar ambient pressure with CMT arc mode 

      Bunaziv, Ivan; Aune, Ragnhild; Olden, Vigdis; Akselsen, Odd Magne (Peer reviewed; Journal article, 2019)
      Hyperbaric welding plays a significant role in subsea pipeline installations and repairs for transport of oil and gas from the offshore field to the market. The effect of ambient pressure, from 1 to 35 bar, on penetration ...
    • An investigation of the anisotropic properties of heat-treated maraging steel grade 300 processed by laser powder bed fusion 

      Hovig, Even Wilberg; S. Azar, Amin; Solberg, Klas; Sørby, Knut (Peer reviewed; Journal article, 2021)
      In order to explore the possibilities enabled by laser beam powder bed fusion of metals (PBF-LB/M), reliable material models are necessary to optimize designs with respect to weight and stiffness. Due to the unique processing ...
    • Laser-arc hybrid welding of 12- and 15-mm thick structural steel 

      Bunaziv, Ivan; Dørum, Cato; Nielsen, Steen Erik; Suikkanen, Pasi; Ren, Xiaobo; Nyhus, Bård; Eriksson, Magnus Carl Fredrik; Akselsen, Odd Magne (Peer reviewed; Journal article, 2020)
      High-power lasers are very effective in welding of plates thicker than 10 mm due to the keyhole mode. High-power intensity generates a vapor-filled cavity which provides substantial penetration depth. Due to the narrow and ...
    • A new method to estimate the residual stresses in additive manufacturing characterized by point heat source 

      Sun, Li; Ren, Xiaobo; He, Jianying; Olsen, Jim Stian; Pallaspuro, Sakari; Zhang, Zhiliang (Peer reviewed; Journal article, 2019)
      Residual stress in additive manufacturing (AM) is one of the key challenges in terms of structural integrity and finish quality of printed components. Estimating the residual stress distribution on additively manufactured ...