Ivar Langen
Professor em.
Kontakt
Telefon: 51832143
E-post: ivar.langen@uis.no
Rom: KE E-266
Organisasjonsenhet
Det teknisk-naturvitenskapelige fakultet
Institutt for maskin, bygg og materialteknologi
Professor em.
Telefon: 51832143
E-post: ivar.langen@uis.no
Rom: KE E-266
Organisasjonsenhet
Det teknisk-naturvitenskapelige fakultet
Institutt for maskin, bygg og materialteknologi
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.
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.
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.
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.
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.
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.
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.
Marchenko, Aleksey; Langen, Ivar; Shestov, Aleksey
(2009)
Hydrological Characteristics of a Narrow and Shallow Part of Van Mijen Fjord on Spitsbergen.
19th International Offshore and Polar Engineering Conference - ISOPE 2009;
2009-06-21 - 2009-06-26.
Marchenko, Aleksey; Langen, Ivar; Shestov, Aleksey
(2008)
Hydrological Characteristics of the Strait Separating Braganzavågen from Sveabukta in Van Mijen Fjord.
Coastal Technology - Coast 2008 International Workshop Celebrating Professor Alf Tørum's 75th Birthday;
2008-05-29 - 2008-05-30.
Ersdal, Gerhard; Kübler, Oliver; Faber, Michael H; Sørensen, John Dalsgaard; Haver, Sverre; Langen, Ivar
(2004)
Economic Optimal Reserve Strength for a Jacket Structure.
ASRANet International Colloquium;
2004-07-05 - 2004-07-07.
Ersdal, Gerhard; Sørensen, John Dalsgaard; Langen, Ivar
(2003)
Updating of structural failure probability based on experienced wave loading.
The Thirteenth (2003) International Offshore and Polar Engineering Conference;
2003-05-25 - 2003-05-30.
Ersdal, Gerhard; Langen, Ivar
(2002)
On Assessment of Existing Offshore Structures.
The Twelfth (2002) International Offshore and Polar Engineering Conference;
2002-05-26 - 2002-05-31.
Than, Thuong Kim; Langen, Ivar; Birkeland, Oddvar
(2002)
Modelling and Simulation of Offshore Crane Operations on a Floating Production Vessel.
The Twelfth (2002) International Offshore and Polar Engineering Conference;
2002-05-26 - 2002-05-31.
Hellevik, Svein Gunnar; Langen, Ivar
(2000)
In-Service Inspection Planning of Flowlines Subjected to CO2 Corrosion.
The 10th (2000) International Offshore and Polar Engineering Conference;
Langen, Ivar; Than, Thuong Kim; Birkeland, Oddvar; Rølvåg, Terje
(2000)
Simulation of Dynamic Behaviour of a FPSO Crane.
The 5th North Sea Offshore Cranes Conference,;
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.
ICOSSAR'93 - The 6th International Conference on Structural Safety and reliability;
Dalane, Jan Inge; Haver, Sverre; Langen, Ivar
(2000)
Variability in Load and Strength for a Jack-up Structure.
ISOPE'93 - The Third (1993)International Offshore and Polar Engineering Conference;
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.
ISOPE-99 The Ninth International Offshore and Polar Engineering Conference;
Jakobsen, Rolf; Bai, Yong; Langen, Ivar
(1999)
Assessment of pipeline girth welds.
ISOPE'99 Moscow;
Gudmestad, Ove Tobias; Langen, Ivar
(1998)
On the importance of carrying out physical model tests.
OTRC-97 International Conference on Nonlinear Design Aspects of Physical Model Tests;
Hellevik, Svein Gunnar; Langen, Ivar; Sørensen, John D.; Kisisel, I.T.
(1998)
Cost Optimal Reliability Based Inspection and Replacement Planning of Piping.
The 1997 ASME Pressure Vessels and Piping Conference;
Langen, Ivar; Skjåstad, O.; Haver, S.; Vugts, J.H.
(1998)
Measured and Predicted Dynamic Behaviour of an Offshore Gravity Platform.
BOSS'97 Eighth International Conference on the Behaviour of Off shore Structures;