Results 11 to 20 of about 30,646 (281)

Design and mechanical properties testing of a new cross-helical popliteal artery stent

open access: yesMedicine in Novel Technology and Devices, 2021
The popliteal artery has complex deformations such as axial shortening, bending, squeezing and twisting, as well as specific positions across the knee joint.
Yuanxing Dai   +4 more
doaj   +1 more source

Prediction Method and Validation Study of Tensile Performance of Reinforced Armor Layer in Marine Flexible Pipe/Cables

open access: yesJournal of Marine Science and Engineering, 2022
Marine flexible pipe/cables, such as umbilicals, flexible pipes and cryogenic hoses, are widely adopted in ocean engineering. The reinforcing armor layer in these pipe/cables is the main component for bearing loads, which is a typical multi-layer ...
Hualin Wang   +6 more
doaj   +1 more source

Wind sock deformity in rectal atresia

open access: yesSaudi Journal of Gastroenterology, 2009
Rectal atresia is a rare anorectal deformity. It usually presents with neonatal obstruction and it is often a complete membrane or severe stenosis. Windsock deformity has not been reported in rectal atresia especially, having been missed for 2 years.
Hosseini Seyed   +4 more
openaire   +3 more sources

Dynamic optical deformation measurements on wind turbines

open access: yesJournal of Physics: Conference Series, 2022
Abstract Because of an increase in the size of wind turbines in recent years, efficient structural health monitoring of the turbine’s structure has become critical. Wind turbine towers deform elastically as a result of the loads due to wind and inertial forces acting on the revolving rotor blades. To adequately assess these deformations,
P Helming   +4 more
openaire   +1 more source

Thermally induced mechanical stress in the stator windings of electrical machines [PDF]

open access: yes, 2018
The lifetime of an electrical machine mainly depends on the thermal overloading. Modern day applications of electrical machines on one hand require compact machines with high power density, while on the other hand force electrical machines to undergo ...
Sergeant, Peter, Silwal, Bishal
core   +3 more sources

Evaluation of Lightning Impulse Test by Frequency Response Analysis [PDF]

open access: yes, 2006
In this work are presented the basis for improving the interpretation of transformer lightning impulse test and the development of a graphical user interface system, which allows comparisons of time domain data and frequency response.
Ramírez, Jorge, Valecillos, Baudilio
core   +3 more sources

A Feasibility Study of Transformer Winding Temperature and Strain Detection Based on Distributed Optical Fibre Sensors

open access: yesSensors, 2018
The temperature distribution and deformation of the transformer windings cannot be measured in a distributed manner by the traditional method and failure location cannot be performed.
Yunpeng Liu   +7 more
doaj   +1 more source

Research on Transformer Winding Deformation and Winding Resistance

open access: yesDEStech Transactions on Environment, Energy and Earth Science, 2016
In this paper, the influence of transformer winding deformation on the equivalent electrical parameters is studied, and the proximity effect and skin effect caused by AC current in the wire are simulated. It is verified that the current distribution will be affected by the proximity effect and skin effect.
Chen Ling   +3 more
openaire   +2 more sources

Numerical Investigations for Vibration and Deformation of Power Transformer Windings under Short-Circuit Condition

open access: yesEnergies, 2023
The analysis of the dynamic process of winding destabilization under sudden short-circuit conditions is of great importance to accurately assess the short-circuit resistance of power transformers. Based on magneto-solid coupling, an axisymmetric model of
Jiawei Wang   +4 more
doaj   +1 more source

Wind-induced deformations in a segmented mirror [PDF]

open access: yesApplied Optics, 2002
A Zernike expansion of wind-induced deformations in a segmented mirror is described. The wind model is a frozen turbulent field with a Kolmogorov spectrum for scales smaller than the outer scale and a flat spectrum for scales larger than the outer scale.
openaire   +2 more sources

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