Results 11 to 20 of about 6,849 (205)

Numerical and Experimental Analysis of Umbilical Cables under Tension [PDF]

Advanced Composites Letters, 2017
Umbilical cables are composite structures that consisting of metallic material and polymeric material. Analysing tension behaviour under axial loading is a key requirement to design the structure. A full three-dimensional finite element model is established in which the effect of radial deformation is given more attention.
Qingzhen Lu, Jinlong Chen, zhixun Yang, Yin Yuan chao, Qianjin Yue   +4 more
openaire   +1 more source

Cystoscopic ICG-Guided Sentinel Lymph Node Dissection in Robotic Radical Prostatectomy: A Prospective Study. [PDF]

Prostate
ABSTRACT Background To evaluate the diagnostic accuracy, procedural feasibility, and clinical outcomes of a novel cystoscopic‐guided indocyanine green (ICG) injection technique followed by fluorescence‐guided sentinel lymph node dissection (SLND) during robotic‐assisted radical prostatectomy (RaRP), hereafter referred to as CysICG‐SLND.
Li YH, Chuang YF, Ou YC, Lin YS, Huang LH, Weng WC, Hsu CY, Tung MC.   +7 more
europepmc   +2 more sources

Constraining Radon Backgrounds in LZ [PDF]

, 2017
The LZ dark matter detector, like many other rare-event searches, will suffer from backgrounds due to the radioactive decay of radon daughters. In order to achieve its science goals, the concentration of radon within the xenon should not exceed $2\mu$Bq ...
Busenitz, J., Edberg, T. K., Ghag, C., Hall, C., Leonard, R., Lesko, K., Liu, X., Meng, Yue, Miller, E. H., Piepke, A., Schnee, R. W.   +10 more
core   +3 more sources

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