Results 1 to 10 of about 411,249 (239)

Analysis and Calculation of Crosstalk for Twisted Communication Cables in Umbilical Cable

Energies, 2022
An umbilical cable is a compactly integrated cable consisting of electrical power cables, communication (electric signal) cables, and chemical transposition tubes.
Runze Cai, Shiyou Yang
doaj   +3 more sources

Study Simulation of Umbilical Cable for Underwater Vehicle [PDF]

Bulletin of the Polytechnic Institute of Iași. Machine constructions Section, 2021
Abstract This paper presents a series of analyses regarding the tethered umbilical cable in uniform current cable from the composition of the underwater remotely operated vehicle (ROV). The remotely operated vehicle is used in different undersea operation when it is important to control and determine precisely the disturbance forces ...
Andra-Teodora Nedelcu, Cătălin Faităr, Nicolae Buzbuchi, Liviu Stan   +3 more
openaire   +2 more sources

Surface Roughness Analysis of Subsea Cables/Umbilicals

Journal of Marine Science and Engineering
Surface roughness is an important factor influencing subsea cable/umbilical–soil interaction. The cable/umbilical goes through several steps before being laid on the seabed, including production, spooling, unspooling, and installation on the seabed. Yet,
Ahmed Reda, Han Eng Low, Mohamed A. Shahin   +2 more
doaj   +2 more sources

Irreducible anteromedial radial head dislocation without fracture caused by transposed biceps tendon in an adult: A case report and literature review [PDF]

Chinese Journal of Traumatology
Irreducible anteromedial radial head dislocation (IARHD) caused by transposed biceps tendon is rare. Delayed diagnosis and surgical failure often occur. A 46-year-old fisherman presented with 10 days history of painful swelling and restricted movement of
Ming-Fu Fu, Hai-Ning Zuo, Tao Sun, Ming-Zhang Mu, Zhi-Yong Zhou   +4 more
doaj   +2 more sources

Design and performance of the Hotrod melt-tip ice-drilling system [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2023
We introduce the design and performance of an electrothermal ice-drilling system designed to insert a temperature sensor cable into ice. The melt tip is relatively simple and low-cost, designed for a one-way trip to the ice–bed interface.
W. Colgan, C. Shields, P. Talalay, X. Fan, A. P. Lines, J. Elliott, H. Rajaram, K. Mankoff, K. Mankoff, M. Jensen, M. Backes, Y. Liu, X. Wei, N. B. Karlsson, H. Spanggård, A. Ø. Pedersen   +15 more
doaj   +1 more source

A New Numerical Scheme with B-Spine Wavelet on the Interval for Transverse Vibration Problem of the Tethered Deep-Sea Robot

Journal of Marine Science and Engineering, 2022
This research is focused on the accurate modeling of a tethered deep-sea robot system with variable-length. Since the flexible umbilical cable is influenced by the surface vessel motion, the ocean current and sea states, etc., its transient response will
Naige Wang, Xiaoqin Xiang
doaj   +1 more source

Effect of Electromagnetic Field on the Corrosion Behavior of 2507 Super Duplex Stainless Steel [PDF]

Cailiao Baohu, 2023
Aiming at the electromagnetic corrosion behavior of 2507 super duplex stainless steel used for ocean umbilical cable，the effects of electromagnetic field changes on the electrochemical properties of 2507 super duplex stainless steel in simulated seawater
HUANG Zezheng, TANG Chutian, HUANG Zhongjia, MAO Feixiong, GAO Huijie, CHEN Kai, YU Guojun
doaj   +1 more source

High Power and Long-distance Power Transmission System in Deep Sea Mining

Kongzhi Yu Xinxi Jishu, 2022
With the depth of seabed mining increasing, required power of deep sea equipment is increasing, its motor power can even be several megawatts. Compared with land power grid, the capacity of ship power grid is small, direct start of high-power motor will ...
ZHU Jianbo, HE Duochang, ZHANG Dinghua
doaj   +3 more sources

Coordinated Decentralized Control of Dynamic Volt-Var Function in Oil and Gas Platform With Wind Power Generation

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, Danilo I. Brandao, Kassiane de S. Medeiros, Matheus S. Dall'asta, Telles B. Lazzarin   +4 more
doaj   +1 more source

Optimal Design and Dynamic Analysis of Hydrofoil Mechanism of Wave Glider

Journal of Marine Science and Engineering, 2022
A wave glider can convert vertical wave motion into its forward propulsion. There are many factors affecting the propulsion performance of a wave glider.
Hongqiang Sang, Jin Zhang, Xiujun Sun, Can Li, Lei Wang, Liwei Wang   +5 more
doaj   +1 more source