Research output per year
Research output per year
Zongchen Li*, Xiaoli Jiang, Zhiping Liu, Hans Hopman
Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review
Rigid pipelines have been widely applied in offshore oil & gas operation and transmission industries on account of their structural simplicity, cost-effectiveness, ease of installation and maintenance. However, surface cracks frequently appear in the internal surface of rigid pipes due to dynamic loads or hydrogen embrittlement, etc. Under dynamic fatigue loads, surface cracks may continue to propagate and finally develop into penetrated cracks, which may cause leakage and serious accidents. Fiber-reinforced polymer (FRP) strengthening technology is already a reliable technique for structure maintenance in onshore pipelines and penetrated cracks in load-bearing circular hollow sections (CHS). Nevertheless, there are very limited systematic investigations of surface crack in rigid pipes reinforced with FRP, which has a remarkable significance for offshore rigid pipes. This paper aims to understand the mechanism of semi-elliptical surface crack growth in the internal surface of rigid pipes under fatigue bending moment reinforced with FRP. Stress intensity factors along the crack front are computed through finite-element (FE) models, which are validated by experimental data from references. The influence of wrapping orientation of CFRP are discussed as well. The numerical results show that under CFRP reinforcement, surface crack growth rate decreases significantly which ensures the safety use of rigid pipes in offshore industry.
Original language | English |
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Title of host publication | Proceedings ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering |
Subtitle of host publication | Volume 4: Materials Technology |
Place of Publication | New York, NY, USA |
Publisher | ASME |
Number of pages | 8 |
ISBN (Electronic) | 978-0-7918-5123-4 |
DOIs | |
Publication status | Published - 2018 |
Event | ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018 - Madrid, Spain Duration: 17 Jun 2018 → 22 Jun 2018 |
Conference | ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018 |
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Country/Territory | Spain |
City | Madrid |
Period | 17/06/18 → 22/06/18 |
Research output: Thesis › Dissertation (TU Delft)