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Ivar Langen

Ekstern sensor

Det teknisk- naturvitenskapelige fakultet
Institutt for maskin, bygg og materialteknologi
KE E-266
Publications
  • Vitenskapelige publikasjoner
    • Aeran, Ashish; Acosta, Ruth; Siriwardane , S.A. Sudath C.; Starke, Peter; Mikkelsen, Ove; Langen, Ivar; Walther, Frank

      (2020)

      A nonlinear fatigue damage model: Comparison with experimental damage evolution of S355 (SAE 1020) structural steel and application to offshore jacket structures.

      International Journal of Fatigue

      ISSN 0142-1123.

      Volum 135.

      DOI: 10.1016/j.ijfatigue.2020.105568

    • Aeran, Ashish; Siriwardane , S.A. Sudath C.; Mikkelsen, Ove; Langen, Ivar

      (2017)

      Life Extension of Ageing Offshore Structures: A Framework for Remaining Life Estimation. I: ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering - Volume 3A: Structures, Safety and Reliability.

      The American Society of Mechanical Engineers (ASME)

      ISBN 978-0-7918-5765-6.

      DOI: 10.1115/OMAE2017-62063

    • Aeran, Ashish; Siriwardane , S.A. Sudath C.; Mikkelsen, Ove; Langen, Ivar

      (2017)

      An accurate fatigue damage model for welded joints subjected to variable amplitude loading .

      IOP Conference Series: Materials Science and Engineering

      ISSN 1757-8981.

      Volum 276.

      Hefte 1.

      s.1-16.

      DOI: 10.1088/1757-899X/276/1/012038

    • Aeran, Ashish; Siriwardane , S.A. Sudath C.; Mikkelsen, Ove; Langen, Ivar

      (2017)

      A framework to assess structural integrity of ageing offshore jacket structures for life extension.

      Marine Structures

      ISSN 0951-8339.

      Volum 56.

      s.237-259.

      DOI: 10.1016/j.marstruc.2017.08.002

    • Aeran, Ashish; Siriwardane , S.A. Sudath C.; Mikkelsen, Ove; Langen, Ivar

      (2017)

      A new nonlinear fatigue damage model based only on S-N curve parameters.

      International Journal of Fatigue

      ISSN 0142-1123.

      Volum 103.

      s.327-341.

      DOI: 10.1016/j.ijfatigue.2017.06.017

    • Marchenko, Aleksey; Langen, Ivar; Shestov, Aleksey

      (2009)

      Hydrological Characteristics of a Narrow and Shallow Part of Van Mijen Fjord on Spitsbergen. I: Proceedings of the Nineteenth (2009) International Offshore and Polar Engineering Conference.

      International Society of Offshore & Polar Engineers

      ISBN 978-1-880653-53-1.

      s.649-658.

    • Hellevik, Svein Gunnar; Langen, Ivar

      (2000)

      Optimal Design-Phase Inspection and Replacement Planning of Pipelines Subjected to Co2 Corrosion.

      International Journal of Offshore and Polar Engineering

      ISSN 1053-5381.

      Volum 10.

      Hefte 2.

      s.121-130.

    • Hellevik, Svein Gunnar; Langen, Ivar; Sørensen, John D

      (1999)

      Cost Optimal Reliability Based Inspection and Replacement Planning of Piping Subjected to CO2 Corrosion.

      International Journal of Pressure Vessels and Piping

      ISSN 0308-0161.

      Volum 76.

      Hefte 8.

      s.527-538.

    • Langen, Ivar; Skjåstad, Otto; Haver, Sverre

      (1998)

      Measured and predicted dynamic behaviour of an offshore gravity platform.

      Applied Ocean Research

      ISSN 0141-1187.

      Volum 20.

      s.15-26.

  • Bøker og kapitler
    • Chung, Jim S.; Langen, Ivar; Kokkinis, Ted; Wang, Alan M.

      (2013)

      Proceedings of The 23rd International Ocean and Polar Engineering Conference (ISOPE 2013).

      International Society of Offshore & Polar Engineers

      ISBN 978-1-880653-99-9.

      Volum 4.

      Hefte 1.

    • Chung, Jin S.; Langen, Ivar; Hong, Sa Young; Prinsenberg, Simon J.

      (2012)

      Proceedings of the Twenty-second (2012) International Offshore and Polar Engineering Conference.

      International Society of Offshore & Polar Engineers

      ISBN 978-1-880653-94-4.

      Hefte 1-4.

    • Hygen, Gunn Kari K.; Langen, Ivar; Schjølberg, Per; Mathisen, Håkon s.; Hansen, Ernst W.M.

      (1999)

      Fokus på produksjon, drift og vedlikehold offshore. Teknologiske utfordringer: ståsted og styrkeområder.

  • Formidling
    • Marchenko, Aleksey; Langen, Ivar; Shestov, Aleksey

      (2009)

      Hydrological Characteristics of a Narrow and Shallow Part of Van Mijen Fjord on Spitsbergen.

    • Marchenko, Aleksey; Langen, Ivar; Shestov, Aleksey

      (2008)

      Hydrological Characteristics of the Strait Separating Braganzavågen from Sveabukta in Van Mijen Fjord.

    • Ersdal, Gerhard; Kübler, Oliver; Faber, Michael H; Sørensen, John Dalsgaard; Haver, Sverre; Langen, Ivar

      (2004)

      Economic Optimal Reserve Strength for a Jacket Structure.

    • Ersdal, Gerhard; Sørensen, John Dalsgaard; Langen, Ivar

      (2003)

      Updating of structural failure probability based on experienced wave loading.

    • Than, Thuong Kim; Langen, Ivar; Birkeland, Oddvar

      (2002)

      Modelling and Simulation of Offshore Crane Operations on a Floating Production Vessel.

    • Ersdal, Gerhard; Langen, Ivar

      (2002)

      On Assessment of Existing Offshore Structures.

    • Dalane, Jan Inge; Haver, Sverre; Langen, Ivar

      (2000)

      Variability in Load and Strength for a Jack-up Structure.

    • Dalane, Jan Inge; Langen, Ivar; Schueller, G.I.; Shinozuka, M.; Yao, J.T.P.

      (2000)

      Probabilistic Inspection Planning for Offshore Structures Using Inspection Importance Measure.

    • Langen, Ivar; Than, Thuong Kim; Birkeland, Oddvar; Rølvåg, Terje

      (2000)

      Simulation of Dynamic Behaviour of a FPSO Crane.

    • Hellevik, Svein Gunnar; Langen, Ivar

      (2000)

      In-Service Inspection Planning of Flowlines Subjected to CO2 Corrosion.

    • Hellevik, Svein Gunnar; Grundy, Paul; Koo, Jay; Langen, Ivar; Ueda, Yukio

      (1999)

      Optimal Design-Phase Inspection and Replacement Planning of Pipelines Subjected to CO2 Corrosion.

    • Jakobsen, Rolf; Bai, Yong; Langen, Ivar

      (1999)

      Assessment of pipeline girth welds.

    • Hellevik, Svein Gunnar; Langen, Ivar; Sørensen, John D.; Kisisel, I.T.

      (1998)

      Cost Optimal Reliability Based Inspection and Replacement Planning of Piping.

    • Gudmestad, Ove Tobias; Langen, Ivar

      (1998)

      On the importance of carrying out physical model tests.

    • Langen, Ivar; Skjåstad, O.; Haver, S.; Vugts, J.H.

      (1998)

      Measured and Predicted Dynamic Behaviour of an Offshore Gravity Platform.

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