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Delft University of Technology

1. Dratsas, P. Prediction of Fatigue Crack Growth behaviour of tubular joints used in offshore structures:.

Degree: 2016, Delft University of Technology

The high levels of wind and wave loads on offshore structures make fatigue analysis a significant parameter that has to be taken into consideration throughout an offshore structure design. Steel tubular members are widely used in offshore (wind) industry due to their efficient structural behaviour. The welded connections between the different tubular members are denoted tubular joints and they are the most susceptible locations of the structure to fatigue damage. This study is concentrated on the fatigue crack growth behaviour of tubular joints. The main objective of the thesis is the application of a procedure that predicts the fatigue crack growth behaviour in case of a tubular T-joint under axial load. This procedure relies on the basic formula of fracture mechanics approach during crack propagation (Paris law) and uses simplified geometries to simulate stress field at the vicinity of the crack and fatigue crack growth results from small-scale steel welded specimens to introduce material constants. The validity of the applied procedure is checked by fatigue crack growth tests on a realistic geometry tubular T-joints. Furthermore, the differences in fatigue crack growth behaviour between welded and base material specimens are examined as well as the effect of a single stress tensile peak on welded, base material small-scale specimens and tubular joints. The effects of stress range, stress ration, mean stress and load sequence are also included in this study. Advisors/Committee Members: Bijlaard, F.S.K., Wardenier, J., Abspoel, R., Janssen, M., Pijpers, R..

Subjects/Keywords: steel structures; fatigue; fracture mechanics; overloads

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Dratsas, P. (2016). Prediction of Fatigue Crack Growth behaviour of tubular joints used in offshore structures:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b626fc12-de40-44ab-bb94-5c68f299cd99

Chicago Manual of Style (16th Edition):

Dratsas, P. “Prediction of Fatigue Crack Growth behaviour of tubular joints used in offshore structures:.” 2016. Masters Thesis, Delft University of Technology. Accessed December 12, 2019. http://resolver.tudelft.nl/uuid:b626fc12-de40-44ab-bb94-5c68f299cd99.

MLA Handbook (7th Edition):

Dratsas, P. “Prediction of Fatigue Crack Growth behaviour of tubular joints used in offshore structures:.” 2016. Web. 12 Dec 2019.

Vancouver:

Dratsas P. Prediction of Fatigue Crack Growth behaviour of tubular joints used in offshore structures:. [Internet] [Masters thesis]. Delft University of Technology; 2016. [cited 2019 Dec 12]. Available from: http://resolver.tudelft.nl/uuid:b626fc12-de40-44ab-bb94-5c68f299cd99.

Council of Science Editors:

Dratsas P. Prediction of Fatigue Crack Growth behaviour of tubular joints used in offshore structures:. [Masters Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:b626fc12-de40-44ab-bb94-5c68f299cd99

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