Results 21 to 30 of about 630 (168)

Crevice Corrosion Study of SAF 3207 HD in 6% FeCl3 Solution using Polarization, Weight Loss, and Electrochemical Impedance Spectroscopy Methods

International Journal of Technology, 2016
Hyperduplex Stainless Steel 3207 (SAF 3207 HD) is one of the materials used in the oil and gas industry, especially for umbilical, which is a system to connect cables or instrumental setups between control platforms and wellhead station.
Rini Riastuti, Mega Herawati Arifiana Amanah Notonegoro, Adam Hidana Yudo Saputro   +2 more
doaj   +1 more source

O método da decomposição de Adomian aplicado à interação fluido-estrutura de um cabo

Vetor, 2012
Neste trabalho investiga-se a interação fluido-estrutura de um cabo submerso em um fluido. Esta investigação será feita através do acoplamento entre a modelagem da dinâmica do cabo com o movimento do fluido.
Adriana E. L. Pereira, Sebastião Cícero de Pinheiro Gomes, Álvaro L. de Bortoli   +2 more
doaj   +4 more sources

Effect of Al2O3 particles on the adhesion, wear, and corrosion performance of epoxy coatings for protection of umbilical cables accessories for subsea oil and gas production systems

Journal of Materials Research and Technology, 2019
Umbilical cables accessories of subsea oil and gas production systems are exposed to very high mechanical stresses, abrasive wear, and continuous electrolyte action in submerged condition.
Jhonny Dias Oliveira, Renan Carreiro Rocha, André Gustavo de Sousa Galdino   +2 more
doaj   +1 more source

Control system of ROV for underwater safety inspection and operation

Zhongguo Jianchuan Yanjiu, 2018
[Objectives] In order to achieve safety inspections for surface attachments on hulls, dams and underwater steel structures according to the requirements of removing attachments,a new Remotely Operated Vehicle(ROV) equipped with cables for underwater ...
ZHANG Guangyi, ZENG Qingjun, DAI Xiaoqiang, ZHU Chunlei, LING Hongjie   +4 more
doaj   +1 more source

Automatic Filling Optimization Design of Filler Bodies in Umbilical Cross-Section Based on Quasi-Physical Algorithm

Shanghai Jiaotong Daxue xuebao
As a key component in the subsea production system for oil and gas exploitation, a marine umbilical consists of optical cables, electrical cables, steel tubes, and filler bodies.
YIN Xu, CAO Donghui, TIAN Geng, YANG Zhixun, FAN Zhirui, WANG Gang, LU Yucheng, WANG Hui
doaj   +1 more source

AWUCD-Net: The Armored Wire Umbilical Cable Surface Defect Detection Algorithm Based on Improved YOLOv7

IEEE Access
When 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
doaj   +1 more source

Conceptualization and Experimental Verification of a 50 kW 600 V/4 kV/600 V DC Power Supply System for Ultra-Deep-Sea HyDrones

IEEE Access
Remotely operated underwater vehicles (ROVs) are crucially important in deep-sea exploration. Today, ROVs are typically supplied from a surface vessel via a medium-voltage (MV) 50 Hz/60 Hz ac umbilical.
David Menzi, Bhagyalakshmi Kakarla, Alexandre Capaul, Marcel Frei, Igor Dorrestijn, Johannes Singer, Johann W. Kolar, Jonas Huber   +7 more
doaj   +1 more source

MagPiezo: A Magnetogenetic Platform for Remote Activation of Endogenous Piezo1 Channels in Endothelial Cells

Advanced Functional Materials, EarlyView.
MagPiezo enables wireless activation of endogenous Piezo1 channels without genetic modification using 19 nm magnetic nanoparticles and low‐intensity magnetic fields. It generates torque forces at the piconewton scale to trigger mechanotransduction in endothelial cells, standing as a novel platform to interrogate and manipulate Piezo1 activity in vitro.
Susel Del Sol‐Fernández, Mariarosaria De Simone, Yilian Fernández‐Afonso, Daniel Garcia‐Gonzalez, Pablo Martínez‐Vicente, Thomas van Zanten, Raluca M. Fratila, Maria Moros   +7 more
wiley   +1 more source

Pipeline Systems in Floating Offshore Production Systems: Hydrodynamics, Corrosion, Design and Maintenance

Journal of Marine Science and Engineering
Floating offshore production systems play a critical role in offshore resource development, where the structural integrity and operational safety of risers, umbilical cables, and mooring cables are of paramount importance.
Jin Yan, Yining Zhang, Zehan Chen, Pengji Li, Yuting Li, Zeyu Cao, Jiaming Wu, Kefan Yang, Dapeng Zhang   +8 more
doaj   +1 more source

A Versatile Engineering Platform for the Fabrication of Prosthetic Venous Valves Using Electrospinning

Advanced Healthcare Materials, EarlyView.
Percutaneous prosthetic venous valves are fabricated by embedding stents in an electrospun matrix that extends luminally to form leaflets. The design shields leaflets from hyperplastic cells, isolates struts from blood contact, and avoids discrete anchoring points.
Dario Arcuti, Salma Mansi, Dominic Biebl, Malin Reuter, Maximilian Grab, José Carlos Rodríguez‐Cabello, Petra Mela   +6 more
wiley   +1 more source