The Experts below are selected from a list of 33 Experts worldwide ranked by ideXlab platform
Arhant Maël - One of the best experts on this subject based on the ideXlab platform.
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Fatigue of improved polyamide mooring Ropes for floating wind turbines
'Elsevier BV', 2020Co-Authors: Chevillotte Yoan, Marco Yann, Bles Guilhem, Devos Karel, Keryer Mathieu, Arhant Maël, Davies PeterAbstract:International audienceThis 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
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Fatigue of polyamide mooring Ropes for floating wind turbines
'EDP Sciences', 2018Co-Authors: Chevillotte Yoan, Marco Yann, Bles Guilhem, Davies Peter, Arhant MaëlAbstract:International audienceThis paper describes a study of the fatigue characterization of polyamide mooring Ropes for floating wind turbines. Undersome conditions polyester Ropes, which are favoured for offshore 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 [1]. The fatigue results presented here for Ropes from a different supplier, confirm thisresult. In order to develop an accelerated evaluation of the fatigue performance,heatbuild-up tests havebeen performed, and promising first results are shown. Finally, the influence of coating is examined by microscopy and yarn-on-yarn tests, in order to improve understanding of the fatigue mechanisms leading to failure
Davies Peter - One of the best experts on this subject based on the ideXlab platform.
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Fatigue of improved polyamide mooring Ropes for floating wind turbines
'Elsevier BV', 2020Co-Authors: Chevillotte Yoan, Marco Yann, Bles Guilhem, Devos Karel, Keryer Mathieu, Arhant Maël, Davies PeterAbstract:International audienceThis 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
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Fatigue of polyamide mooring Ropes for floating wind turbines
'EDP Sciences', 2018Co-Authors: Chevillotte Yoan, Marco Yann, Bles Guilhem, Davies Peter, Arhant MaëlAbstract:International audienceThis paper describes a study of the fatigue characterization of polyamide mooring Ropes for floating wind turbines. Undersome conditions polyester Ropes, which are favoured for offshore 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 [1]. The fatigue results presented here for Ropes from a different supplier, confirm thisresult. In order to develop an accelerated evaluation of the fatigue performance,heatbuild-up tests havebeen performed, and promising first results are shown. Finally, the influence of coating is examined by microscopy and yarn-on-yarn tests, in order to improve understanding of the fatigue mechanisms leading to failure
Chevillotte Yoan - One of the best experts on this subject based on the ideXlab platform.
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Fatigue of improved polyamide mooring Ropes for floating wind turbines
'Elsevier BV', 2020Co-Authors: Chevillotte Yoan, Marco Yann, Bles Guilhem, Devos Karel, Keryer Mathieu, Arhant Maël, Davies PeterAbstract:International audienceThis 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
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Fatigue of polyamide mooring Ropes for floating wind turbines
'EDP Sciences', 2018Co-Authors: Chevillotte Yoan, Marco Yann, Bles Guilhem, Davies Peter, Arhant MaëlAbstract:International audienceThis paper describes a study of the fatigue characterization of polyamide mooring Ropes for floating wind turbines. Undersome conditions polyester Ropes, which are favoured for offshore 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 [1]. The fatigue results presented here for Ropes from a different supplier, confirm thisresult. In order to develop an accelerated evaluation of the fatigue performance,heatbuild-up tests havebeen performed, and promising first results are shown. Finally, the influence of coating is examined by microscopy and yarn-on-yarn tests, in order to improve understanding of the fatigue mechanisms leading to failure
Nakatsuka H - One of the best experts on this subject based on the ideXlab platform.
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Tension-tension testing of a novel mooring Rope Construction
'ASME International', 2017Co-Authors: Sd Weller, Halswell P, Johanning L, Kosaka T, Nakatsuka HAbstract:This is the author accepted manuscript.Synthetic fibre Ropes are in widespread use in maritime applications ranging from lifting to temporary and permanent mooring systems for vessels, offshore equipment and platforms. The selection of synthetic Ropes over conventional steel components is motivated by several key advantages including selectable axial stiffness, energy absorption (and hence load mitigation), fatigue resistance and low unit cost. The long-term use of Ropes as safety critical components in potentially high dynamic loading environments necessitates that new designs are verified using stringent qualification procedures. The International Organization for Standardization (ISO) is one certification body that has produced several guidelines for the testing of synthetic Ropes encompassing quasi-static and dynamic loading as well as fatigue cycling. This paper presents the results of tension-tension tests carried out to ISO 2307:2010, ISO 18692:2007(E) and ISO/TS 19336:2015(E) on three different 12-strand Rope Constructions manufactured by Ashimori Industry Co. Ltd from polyester and Vectran® fibres. The purpose of the tests was to characterise the performance of a novel 12-strand Construction and compare this to a conventional 12-strand Construction. Utilising the Dynamic Marine Component test facility (DMaC) at the University of Exeter several key performance metrics were determined including; elongation, minimum break load (MBL) and quasi-static and dynamic stiffness. During the ISO 2307:2010(E) test programme the samples were tested dry and during the ISO 18692:2007(E) and ISO/TS 19336:2015(E) test programmes the samples were fully submerged in tap water after being soaked for at least 24 hours. Two methods were used to quantify sample extension: i) an optical tracking system and ii) a draw-wire potentiometer. Axial compression fatigue and cyclic loading endurance tests were also carried out on two Vectran® samples. Further load-to-failure tests and sample analysis were also carried out by Ashimori Industry Co. Ltd. It was found that the MBL of the samples exceeded the values specified by the manufacturer (by 7.7-29.5% for the polyester samples) with failure occurring at the splices in all cases and minor abrasion noted in several locations. The measured MBL of the novel polyester Straight Strand Rope (SSR) Construction was up to 16% higher than the conventional Construction with increases of quasi-static and dynamic stiffness of up to 6.8%. Differences between the viscoelastic and viscoplastic behaviour of the samples were also noted. The data obtained during these tests will provide insight into the behaviour of these materials and different Rope Constructions which will be of use to Rope manufacturers, mooring system designers in addition to offshore equipment and vessel operators.The authors at the University of Exeter would like to thank their colleagues at Nagasaki University and Ashimori Industry Co. Ltd for being given the opportunity to carry out the interesting work reported in this paper. Through the Peninsula Research Institute for Marine Renewable Energy (PRIMaRE) consortium, the DMaC test facility was funded from the ERDF Convergence programme and South West Regional Development Agenc
Maël Arhant - One of the best experts on this subject based on the ideXlab platform.
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Fatigue of polyamide mooring Ropes for floating wind turbines
MATEC Web of Conferences, 2018Co-Authors: Yoan Chevillotte, Yann Marco, Peter Davies, Guilhem Bles, Maël ArhantAbstract:This paper describes a study of the fatigue characterization of polyamide mooring Ropes for floating wind turbines. Undersome conditions polyester Ropes, which are favoured for offshore 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 [1]. The fatigue results presented here for Ropes from a different supplier, confirm thisresult. In order to develop an accelerated evaluation of the fatigue performance,heatbuild-up tests havebeen performed, and promising first results are shown. Finally, the influence of coating is examined by microscopy and yarn-on-yarn tests, in order to improve understanding of the fatigue mechanisms leading to failure.
