Results 21 to 30 of about 27,631 (265)

Effect of ultrasonic vibration-assisted milling on surface quality of carbon fiber reinforced polymer

Journal of Materials Research and Technology
This paper studies the effect and mechanisms of ultrasonic vibration-assisted machining on the surface quality of carbon fiber reinforced polymer (CFRP), based on the kinematic characteristics of ultrasonic vibration-assisted milling.
Yukun Zhang, Junxue Ren, Jinhua Zhou
doaj   +1 more source

Study of ultrasonic vibration–assisted thread turning of Inconel 718 superalloy

Advances in Mechanical Engineering, 2019
With excellent properties, high-temperature superalloys have become the main application materials for aircraft engines, gas turbines, and many other devices. However, superalloys are typically difficult to machine, especially for the thread cutting.
Yu He, Zhongming Zhou, Ping Zou, Xiaogang Gao, Kornel F Ehmann   +4 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Application of ultrasonic vibrations in filtering of liquid [PDF]

Mechanics and Advanced Technologies, 2018
В работе рассмотрены вопросы обработки технологических жидкостей - очистка от механических примесей, обеззараживание, активация и саморегенерации фильтровальной элемента. Рассматривается способ обработки, который предусматривает использование ультразвукового поля, интенсивность которого превышает порог возникновения кавитации.
Zilinskyi, А., Lugovska, К., Коvalenko, О.   +2 more
openaire   +2 more sources

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Effect of periodic ultrasonic vibration on forming and properties of 316L stainless steel’s TIG weld

Hanjie xuebao
To deal with large heat input and improve the structure and performance of traditional TIG welding, ultrasonic vibration was adopted and directly acted on the base material to introduce periodic ultrasonic vibration into the molten pool, and the ...
Mingzhu HU, Qihao CHEN, Zhidong YANG, Yunhai WANG, Sanbao LIN, Juan PU   +5 more
doaj   +1 more source

Research on Fracture Characteristics and Energy Dissipation of Hard Rock under the Excitation of Ultrasonic Vibration

Geofluids, 2022
To promote the application of ultrasonic vibration rock crushing technology in underground rock-drilling engineering, it is necessary to investigate the damage and fracture characteristics of hard rock under the excitation of ultrasonic vibration.
Lei Zhang, Xufeng Wang, Jiyao Wang, Zhanbiao Yang   +3 more
doaj   +1 more source

Elastic Properties and Thermal Expansion Behavior of a Polycrystalline VMnFeCoNi High‐Entropy Alloy

Advanced Engineering Materials, EarlyView.
The high‐entropy alloy (HEA) V20Mn20Fe20Co20Ni20 (composition in at.%) can be made single‐phase face‐centered cubic (FCC) when annealed above 1338 K followed by water quenching. In this state, the alloy exhibits the greatest strength‐ductility combination of any quinary single‐phase FCC HEA.
Guillaume Laplanche, Marie Münchhalfen, Aditya Srinivasan Tirunilai, Jürgen Schreuer   +3 more
wiley   +1 more source

Research on the Influence of the Assembly Parameters of the Junction Surface of Ultrasonic Acoustic Components on the Acoustic Performance Parameters

Machines, 2022
The core of the ultrasonic machining system is the acoustic vibration component. Due to the inconsistency of the assembly conditions between the junction surfaces of the acoustic vibration component, the resonant frequency of the ultrasonic acoustic ...
Hongxian Ye, Xiangkui Huang, Xiaoping Hu, Baohua Yu   +3 more
doaj   +1 more source

Support‐Controlled Reaction Pathways via Dynamic Sulfur‐Mediated Interfaces for Selective Urea Electrolysis

Advanced Functional Materials, EarlyView.
Sulfur‐doped graphitized carbon nanofibers act as adaptive catalyst–support platforms, enabling dynamic sulfur‐mediated reconstruction and strong metal–support interactions. This unique behavior enhances catalyst stability and controls reaction pathways, achieving highly selective urea oxidation (∼92% N2) coupled with efficient hydrogen evolution ...
Melanie Guillén‐Soler, Lucía Vizcaíno‐Anaya, Ahmad Tayyebi, José Manuel Vila‐Fungueiriño, María del Carmen Giménez‐López   +4 more
wiley   +1 more source