Monitoring the structural integrity of a flexible riser during a full-scale fatigue test

Clarke, Thomas Gabriel Rosauro; Jacques, Rosângela Assis; Bisognin, André; Camerini, Cláudio; Damasceno, Sergio; Strohaecker, Telmo Roberto

doi:10.1016/j.engstruct.2010.12.039

Cited by 27 publications

(9 citation statements)

References 13 publications

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“…Fatigue experiments that simulate the dynamic bending of flexible pipes with large diameters require expensive testing devices and long testing periods [8][9][10]. Design tools that can predict the bending stress rapidly and accurately are therefore essential for designers in evaluating the fatigue properties and estimating the service life of flexible pipes.…”

Section: Introductionmentioning

confidence: 99%

Validity and limitation of analytical models for the bending stress of a helical wire in unbonded flexible pipes

Tang

Yang

Yan

et al. 2015

Applied Ocean Research

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Section: Introductionmentioning

confidence: 99%

Validity and limitation of analytical models for the bending stress of a helical wire in unbonded flexible pipes

Tang

Yang

Yan

et al. 2015

Applied Ocean Research

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“…A flexible marine riser is a pipeline connecting subsea wellhead and offshore platform to transmit oil and gas, which is key equipment in offshore oil and gas exploitation. A flexible marine riser is a type of composite pipe composed of a multi-layer structure containing an inner carcass layer, sealing layer, armor layer, and outer sheath layer [1][2][3]. Armor layer is the core layer of a flexible marine riser, which largely determines the service performance of the flexible riser.…”

Section: Introductionmentioning

confidence: 99%

Fatigue fracture behavior of high-strength low-alloy steel for flexible marine riser in the high cycle fatigue regime

Zhang

Gao²,

Wang³

et al. 2022

Mater. Res. Express

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The relationship between microstructure, stress ratio, and fatigue fracture behavior of high-strength steel for flexible marine risers was investigated by microstructure characterization and fatigue test. The microstructure characteristic, S-N curve, fatigue fracture morphology, and fatigue crack morphology after quenching and tempering treatment and cyclic heat treatment, respectively, were evaluated. The results revealed that after cyclic heat treatment, the microstructure was refined considerably, the grain boundary density and the content of high-angle grain boundary increased, which inhibited the fatigue crack propagation and improved the fatigue strength. The average stress increased by increasing the stress ratio, which promoted the crack initiation and propagation; consequently, the fatigue strength and fatigue life of the tested steel decreased.

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“…At the same time, the suction anchor foundation is a large structure with the tens of meters height and considerable costs [20,21]. Although there are some studies on subsea manifolds, buoy [22][23][24][25], flexible pipes or risers [26][27][28][29][30][31] and mooring systems [32][33][34][35][36][37], there is no such concept that combines the two parts and keeps manifold suspending in the water and creates a 3D subsea production system. Here, the new subsea manifold is suspended with the buoy, and the flexible pipes may be used to be the mooring systems as well as the transporting oil and gas pipelines.…”

Section: Introductionmentioning

confidence: 99%

The motion response and hydrodynamic performance comparisons of the new subsea suspended manifold with two mooring scenarios

Wang

Chen

et al. 2021

J Braz. Soc. Mech. Sci. Eng.

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The subsea manifold as the hub oil and gas transportation equipment is a critical part for the layout optimization of subsea production system and reducing the number of pipelines. The traditional subsea manifold is fixed on seabed by its foundation, so traditional manifold system is hard to be discarded and recovered although it has many advantages and is applied widely in the deep water development scenario. In this paper, a new subsea suspended manifold concept is proposed to discuss its feasibility by the hydrodynamic performance state in vertical tension and catenary mooring methods. A mathematical model is established to solve the chain tension distribution and displacement of the subsea suspended manifold. Meanwhile, the motion response of the subsea suspended manifold under different influence factors, tension distribution of the mooring chains and the flexible jumpers in two mooring schemes are simulated, respectively, through OrcaFlex software. The research results will provide an important reference for the optimization of the preliminary scenario design of the subsea suspended manifold mooring system.

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Monitoring the structural integrity of a flexible riser during a full-scale fatigue test

Cited by 27 publications

References 13 publications

Validity and limitation of analytical models for the bending stress of a helical wire in unbonded flexible pipes

Validity and limitation of analytical models for the bending stress of a helical wire in unbonded flexible pipes

Fatigue fracture behavior of high-strength low-alloy steel for flexible marine riser in the high cycle fatigue regime

The motion response and hydrodynamic performance comparisons of the new subsea suspended manifold with two mooring scenarios

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