Creep behaviour of a parallel-lay aramid rope

Guimarães, G. B.; Burgoyne, CJ

doi:10.1007/bf01105061

Cited by 32 publications

(13 citation statements)

References 5 publications

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“…The curve is divided into three typical stages corresponding to primary, secondary and recovery creep. The creep rate has a steep decrease in the first stage followed by a gradual decrease in the secondary stage to reach and maintain a constant rate . There is an instantaneous reduction in strain followed by a further gradual reduction with time in the recovery stage.…”

Section: Resultsmentioning

confidence: 99%

Creep deformation and its correspondence to the microstructure of different polyester industrial yarns at room temperature

Kang

Liu

et al. 2018

Polymer International

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The room temperature creep behaviors and related microstructural changes of a high‐tenacity (HT) poly(ethylene terephthalate) (PET) industrial yarn and a super‐low‐shrinkage (SLS) PET industrial yarn were investigated and compared by using wide‐angle X‐ray scattering (WAXS), small‐angle X‐ray scattering (SAXS), birefringence measurements and Fourier transform infrared spectroscopy (FTIR) in order to identify their respective underlying creep mechanisms. The crystal structure including crystalline orientation and crystallinity of fibers did not show obvious changes after the creep process, while the amorphous structures varied with creep stress. The HT yarn creep deformation was mainly elastic, and its creep recovery ratio was high. The amorphous orientation, amorphous layer thickness and degree of conformation change from gauche to trans conformers showed a slight increase. The mechanism of this slight change is that the coiled molecular chains are oriented under tensile loading and most of the extended chains are disoriented under offloading in the small amorphous region. By contrast, the SLS yarn underwent plastic creep deformation with a low recovery ratio. After the creep test, the amorphous orientation and lamellar thickness both increased but the crystallinity remained unchanged. The creep mechanism for the SLS yarn is that the molecular chains in the large amorphous domain are easily extended and oriented subjected to tensile loading, while conformation transition from gauche to trans conformers and the formation of irreversible mesophase take place. © 2018 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Creep deformation and its correspondence to the microstructure of different polyester industrial yarns at room temperature

Kang

Liu

et al. 2018

Polymer International

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“…When a constant load is applied to a tensile specimen which can be any components of fiber ropes, the creep-rupture curve including primary, secondary and tertiary regions can be obtained, as shown in Fig. 1, which was observed by lots of researchers [10,[14][15][16][17][18][19][20]. Even though creep rupture experiments is worthy of being systematically conducted and short-term creep behavior is not the area of main interest for mooring engineering, most researchers paid more attention to the short-term creep behavior of synthetic fiber ropes due to the cost of creep rupture tests at the normal temperature and operational load.…”

Section: Introductionmentioning

confidence: 99%

A creep–rupture model of synthetic fiber ropes for deepwater moorings based on thermodynamics

Lian

Liu

Wei

et al. 2015

Applied Ocean Research

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“…A series of creep tests on a parallel-lay aramid rope has been conducted by Guimaraes and Burgoyne [3]. Kmet and Holickova [5] studied nonlinear creep of steel strand ropes subjected to varying loads.…”

Section: Introductionmentioning

confidence: 99%

“…It is clear that for the design and reliability assessment of pre-stressed cable structures, an accurate prediction of cable rheological properties is highly desirable. The ability to predict the creep of the cables under constant and varying stresses is therefore very important [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%