Life extension of offshore structures : A conceptual framework and fatigue damage models
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OriginalversjonLife extension of offshore structures : A conceptual framework and fatigue damage models by Ashish Aeran, Stavanger : University of Stavanger, 2019 (PhD thesis UiS, no. 477)
Many offshore structures worldwide are approaching or have already exceeded their original design life. It is important to use the existing infrastructure efficiently and to estimate remaining service life accurately. Fatigue and corrosion are identified as main ageing mechanisms for these structures. Althoug much research has been carried out on understanding these ageing processes, failure has occured and is still occuring in offshore structures. Infact, for these structures, almost 25 % of structural damage requiring repair is classified as fatigue damage.
PhD thesis in Offshore technology
Består avPaper 1: Aeran, A., Siriwardane, S.C., Mikkelsen, O. (2016) Life extension of ageing offshore structures: Time dependent corrosion degradation and health monitoring. Proceedings of the 26th International Ocean and Polar Engineering Conference, ISOPE 2016, International Society of Offshore & Polar Engineers, Rhodes, Greece.
Paper 2: Aeran, A., Siriwardane, S.C., Mikkelsen, O & Langen, I. (2017) Life Extension of ageing offshore structures: A fremwork for remaining life estimation. Proceedings of the 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2017, Volume 3A, Paper no. OMAE2017-62063, Trondheim, Norway
Paper 3: Aeran, A., Siriwardane, S.C., Mikkelsen, O & Langen, I. (2017) A framework to assess structural integrity of ageing offshore jacket structures for life extension. Marine Structures, pp. 237-259
Paper 4: Aeran, A., Siriwardane, S.C., Mikkelsen, O & Langen, I. (2017) A new linear fatigue damage model based only on S-N curve parameters. International Journal of Fatigue, 103, pp. 327-341.
Paper 5: Aeran, A., Siriwardane, S.C., Mikkelsen, O & Langen, I. (2017) An accurate fagitue damage report for welded joints subjected to variable amplitude loading. Proceedings of the 1st International Conference of Computational Methods in Offshore Technology, Volume 267, Stavanger, Norway
Paper 6: Aeran, A., Acosta, R., Siriwardane, S.C., Starke, P., Mikkelsen, O., Langen, I. & Walther, F. (2019) 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 (under review)
Paper 7: Aeran, A., Vantadori, S., Carpinteri, A., Siriwardane, S.C., & Scorza, D. (2019) Novel non-linear relationshop to evaluate the critical plane orientation. International Journal of Fatigue, 124, pp. 537-543
UtgiverUniversity of Stavanger, Norway
SeriePhD thesis UiS;