Results 41 to 50 of about 15,703 (300)

REFLECTIONS ON THE DESIGN OF STEEL POLES FOR TRANSMISSION LINES IN MEXICO [PDF]

open access: yes, 2023
The use of steel poles as support structures for lines in Mexico has increased in the last 30 years, mainly due to the increase in urban and suburban sprawl that demand less right of way for this type of infrastructure and less space for their ...
Cordero-Macías, Cuauhtémoc   +1 more
core  

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang   +10 more
wiley   +1 more source

Wideband 1-Bit Bandpass Delta Sigma Modulator Using Elliptic Filter in Noise Transfer Function

open access: yesIEEE Access, 2022
A 1-bit band-pass delta-sigma modulator (BP-DSM), which utilizes oversampling technology, allows a modulated signal to be directly output by using a high-speed 1-bit digital pulse train, thus realizing miniaturization of transmitters.
Takashi Maehata, Noriharu Suematsu
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han   +5 more
wiley   +1 more source

Leaching of Chromium, Copper, and Arsenic from CCA-Treated Utility Poles

open access: yesApplied and Environmental Soil Science, 2014
Concentrations of Cu, Cr, and As in soils surrounding 26 Douglas Fir Chromated Copper Arsenate (CCA) treated utility poles and in rainwater runoff from a new CCA treated utility pole segment (log) suspended outside in a cylinder were studied.
Cynthia A. Coles   +3 more
doaj   +1 more source

Transformation plan for differentiated lightning protection of power supply lines in a mountainous oil transmission station

open access: yesYou-qi chuyun, 2022
In order to ensure the reliable operation of oil transmission stations and improve the lightning protection performance of their power supply lines, the lightning accidents occurred to power supply lines in the Anshun Station in the southern mountainous ...
Jian WANG   +6 more
doaj   +1 more source

Electric and magnetic field of lines for different configurations of transmission line poles

open access: yes, 2022
U uvodnom dijelu rada opisan je značaj električnog i magnetskog polja te zadatak ovog rada. U drugom poglavlju pregledavajući različitu literaturu opisani su štetni utjecaji elektromagnetskih polja kao i načini smanjenja štetnosti istih.
Budim, Nikola
core  

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li   +5 more
wiley   +1 more source

On invariant zeros of linear systems of PDEs

open access: yes, 2006
In this paper we provide a behavioral framework in which to describe and extend the concept of linear dynamics introduced by Fliess, from the one dimensional (1D) to the multidimensional (nD) framework.We provide an alternative description of the ...
ZARIS, P   +7 more
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

open access: yesAdvanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir   +5 more
wiley   +1 more source

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