Fatigue of improved polyamide mooring ropes for floating wind turbines

OCEAN ENGINEERING

卷:199

Article

Chevillotte, Yoan^1,2  Marco, Yann¹  Bles, Guilhem¹  Devos, Karel³  Keryer, Mathieu⁴  Arhant, Mael²  Davies, Peter^2,5 

[1] IRDL, ENSTA Bretagne, UMR CNRS 6027, F-29200 Brest, France

[2] IFREMER, Marine Struct Lab, Ctr Bretagne, F-29280 Plouzane, France

[3] Bexco, Hamme, Belgium

[4] Naval Energies, F-29803 Brest, France

[5] France Energies Marines, F-29280 Plouzane, France

关键词: Fatigue;    Rope;    Nylon;    Mooring;    Water;    Floating wind turbine;   

DOI  :  10.1016/j.oceaneng.2020.107011

来源: Elsevier

【 摘 要 】

This paper describes a study of the fatigue characterization of polyamide mooring ropes for floating wind turbines. Under some conditions polyester ropes, which are favoured for offshore oil and gas platform station-keeping, are too stiff for wind turbine moorings, and polyamide may be a suitable alternative. While early studies on fatigue of braided nylon ropes showed very short lifetimes some recent results have indicated that it is possible to significantly enhance lifetime by modifying rope construction and improving fibre coatings. In this paper yarn-on-yarn abrasion testing is used first to evaluate a new yarn coating. Significant lifetime enhancement was noted, so fatigue testing of ropes was then performed. Results confirm that excellent fatigue lifetimes can be achieved, superior to those for steel chain. Finally, failed yarn and rope samples were examined by microscopy, in order to improve understanding of the fatigue mechanisms leading to failure.

【 授权许可】

Free