Results 21 to 30 of about 7,286 (186)

Effect of Ultrasonic Surface Rolling Process on the Hot Compression Behavior of Inconel 718 Superalloy at 700 °C

open access: yesNanomaterials, 2019
A series of hot compression tests at the temperature of 700 °C were applied to study the effect of the ultrasonic surface rolling process (USRP) on the hot compression behavior of Inconel 718 superalloy.
Zhiyan Sun, Shuai Ren, Timin Hu, Bo Li
doaj   +1 more source

On Phase Noise Suppression in Full-Duplex Systems [PDF]

open access: yes, 2014
Oscillator phase noise has been shown to be one of the main performance limiting factors in full-duplex systems. In this paper, we consider the problem of self-interference cancellation with phase noise suppression in full-duplex systems. The feasibility
Ahmed, Elsayed, Eltawil, Ahmed M.
core   +1 more source

Real‐time implementation of distributed beamforming for simultaneous wireless information and power transfer in interference channels

open access: yesETRI Journal, 2020
In this paper, we propose one‐bit feedback‐based distributed beamforming (DBF) techniques for simultaneous wireless information and power transfer in interference channels where the information transfer and power transfer networks coexist in the same ...
Yong‐Gi Hong   +4 more
doaj   +1 more source

Mechanical and Corrosion Behavior of a Composite Gradient-Structured Cu-Fe Alloy

open access: yesMetals, 2023
Immiscible Cu-Fe alloys exhibit poor corrosion resistance due to different corrosion potentials between the constituent phases, which limits their application.
Bo Guan   +9 more
doaj   +1 more source

Influence of Ultrasonic Surface Rolling Process and Shot Peening on Fretting Fatigue Performance of Ti-6Al-4V

open access: yesChinese Journal of Mechanical Engineering, 2021
At present, there are many studies on the residual stress field and plastic strain field introduced by surface strengthening, which can well hinder the initiation of early fatigue cracks and delay the propagation of fatigue cracks. However, there are few
Ning Wang   +5 more
doaj   +1 more source

Improving fatigue performance of surface-damaged Ti-6Al-4V alloy via ultrasonic surface rolling process [PDF]

open access: yesMATEC Web of Conferences, 2020
Surface damages caused by markings, like laser marking and mechanical marking are detrimental to the fatigue performance of the components. To improve the fatigue performance of laser marked or mechanical marked Ti-6Al-4V alloy, ultrasonic surface ...
Ao Ni, Liu Daoxin, Zhang Xiaohua
doaj   +1 more source

LTE RSRP, RSRQ, RSSNR and local topography profile data for RF propagation planning and network optimization in an urban propagation environment [PDF]

open access: yes, 2018
In the design of 5G cellular communication to guarantee quality signal reception at every point within a coverage area, fundamental knowledge of the channel propagation characteristics is vital.
Hamid, Oliveri, Popoola, Prather
core   +2 more sources

Evolution of microstructure and mechanical properties of aluminum alloy induced by turning and ultrasonic surface rolling process

open access: yesJournal of Materials Research and Technology
The microstructure and mechanical properties have a significant impact on the service performance of materials. This paper compared the microstructure and mechanical properties of 2024 aluminum alloy subjected to turning and ultrasonic surface rolling ...
Hongtao Chen   +7 more
doaj   +1 more source

Development and Demonstration of a TDOA-Based GNSS Interference Signal Localization System [PDF]

open access: yes, 2012
Background theory, a reference design, and demonstration results are given for a Global Navigation Satellite System (GNSS) interference localization system comprising a distributed radio-frequency sensor network that simultaneously locates multiple ...
Bhatti, Jahshan A.   +2 more
core   +1 more source

Enhancement of Fatigue Endurance Limit through Ultrasonic Surface Rolling Processing in EA4T Axle Steel

open access: yesMetals, 2020
Fatigue property is a key evaluation index for the service reliability of railway axle. In this work, the effect of ultrasonic surface rolling processing (USRP) on the surface characteristic and fatigue property was investigated in an EA4T axle steel ...
Xiaodi Wang   +4 more
doaj   +1 more source

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