Results 11 to 20 of about 7,069 (230)
IEEE AccessWhen armored wire umbilicals are used for launching and recovering the seafloor drill, they need to be detected for defects to prevent accidents. Existing wire rope non-destructive detection methods are susceptible to interference, low efficiency, high ...
Du Chen, Yongping Jin
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A Study on the Problem of AC Corrosion of Power Umbilical Cables Caused by Electromagnetic Induction Phenomena [PDF]
EnergiesDuring the normal laying and operation of a three-core umbilical cable, AC current can easily lead to AC electrochemical corrosion on the outer surface of the steel tube.
Pengjin Shao +5 more
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Modeling and Control of a Six Degrees of Freedom Maglev Vibration Isolation System [PDF]
Sensors, 2019 The environment in space provides favorable conditions for space missions. However, low frequency vibration poses a great challenge to high sensitivity equipment, resulting in performance degradation of sensitive systems.
Qianqian Wu +4 more
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On-Bottom Stability of Umbilicals and Power Cables for Offshore Wind Applications [PDF]
Energies, 2019 With the increase in offshore wind farms, the demands for umbilicals and power cables have increased. The on-bottom stability of umbilicals and power cables under the combined wave and current loading is the most challenging design issue, due to their light weight and the complex fluid–cable–soil interaction.
Guomin Ji, Muk Chen Ong
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Flight test results for microgravity active vibration isolation system on-board Chinese Space Station [PDF]
npj MicrogravityThe Fluid Physics Research Rack (FPR) is a research platform employed on-board the Chinese Space Station for conducting microgravity fluid physics experiments.
Wei Liu +5 more
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MISSILE WITH ATTACHED UMBILICAL CABLE AS A RECEIVING ANTENNA
IEEE Transactions on Antennas and Propagation, 1963 JR HARRISON
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Voltages and AC Corrosion on Metallic Tubes in Umbilical Cables Caused by Magnetic Induction From Power Cable Charging Currents [PDF]
IEEE Transactions on Power Delivery, 2018 Offshore umbilical cables often include both power cables and elements such as metallic tubes and signal cables. It was concluded from a recent failure of stainless tubes that ac corrosion was the cause of the failure. This paper describes how ac corrosion can lead to tube failure when a puncture exists in the insulating tube coating.
Bjørn Gustavsen +3 more
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DYNAMICS OF AN UMBILICAL CABLE FOR UNDERGROUND BORE-WELL APPLICATIONS
International Journal of Electronics Signals and Systems, 2012 A general model for an umbilical cable for underground bore-well applications is considered. The response of one-degree-of-freedom, nonlinear system under external excitation forces and the effect of the parameters 2, β and f on the excited system are investigated.
KANNAN SANKAR, JAYA KUMAR. V.K
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Theoretical and Experimental Investigations Into Umbilical Cables for Communications Under the Sea
, 2014 Continual advances are being made in the control and monitoring of subsea oil wells by the application of new technology for sensors, subsea processing and communications devices. With these advances, the demands on the subsea umbilical are constantly increasing with deployment lengths and depths growing and the quantity of controlled functions now ...
Andrew George Cairncross Mitchell
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IEEE Open Journal of Industry Applications, 2023 The integration of offshore wind energy power system is a solution to reduce carbon emissions in the oil and gas sector. However, the intermittent profile of wind power generation can bring challenges of voltage/frequency fluctuations to the electrical ...
Lorrana F. da Rocha +4 more
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