Results 21 to 30 of about 33,469 (308)

Contact analysis and mathematical modeling of traveling wave ultrasonic motors [PDF]

open access: yes, 2004
An analysis of the contact layer and a mathematical modeling of traveling wave ultrasonic motors (TWUM) are presented for the guidance of the design of contact layer and the analyses of the influence of the compressive force and contact layer on motor ...
Zhu, Meiling
core   +1 more source

Research on the promotion mechanism of surface burnishing process by two-dimensional ultrasonic vibration

open access: yesJournal of Materials Research and Technology, 2021
Tangential ultrasonic vibration and vertical ultrasonic vibration are applied in the surface burnishing process (SBP) to study the improvement mechanism of both on the machining performance.
Zhou Zhen-yu   +5 more
doaj   +1 more source

Effect of ultrasonic vibration on finished quality in ultrasonic vibration assisted micromilling of Inconel718

open access: yesChinese Journal of Aeronautics, 2021
Abstract Inconel718 was machined with the traditional micromilling (TMM) and ultrasonic vibration assisted micromilling (UVAMM) with the different technology parameters, whose surface quality and burrs formation were studied. The results show that TMM often forms pits, bumps and gullies in the size effect range. UVAMM effectively improves the surface
Bin FANG   +3 more
openaire   +1 more source

Experimental and Simulation Study on Breaking Rock under Coupled Static Loading and Ultrasonic Vibration

open access: yes, 2022
In recent years, ultrasonic vibration rock-breaking technology has aroused great interest in tunnel excavation and underground mineral. To apply this technology to practical engineering, it is necessary to compare the difference between cumulative damage
Zhai, Guobing   +17 more
core   +1 more source

Research progress and prospects of ultrasonic vibration in coal rock fracturing

open access: yesMeitan kexue jishu
In order to promote the technological development of ultrasonic vibration induced cracking of coal and rock masses, improving the efficiency of coalbed methane production and hard rock excavation in mines, it reviews the development history of ultrasonic
Xufeng WANG   +6 more
doaj   +1 more source

Study on a longitudinal–torsional ultrasonic vibration system with diagonal slits

open access: yesAdvances in Mechanical Engineering, 2017
The longitudinal–torsional ultrasonic vibration machining process is popular for machining hard and brittle materials. A longitudinal–torsional ultrasonic vibration system with diagonal slits was designed for the ultrasonic vibration machining process ...
Tao Chen   +3 more
doaj   +1 more source

Theoretical and Experimental Study on Vibration Propagation in PMMA Components in Ultrasonic Bonding Process

open access: yesMicromachines, 2017
Ultrasonic bonding has an increasing application in the micro assembly of polymeric micro-electro mechanical systems (MEMS) with high requirements for fusion precision. In the ultrasonic bonding process, the propagation of ultrasonic vibration in polymer
Yibo Sun, Feng Wang, Xinhua Yang
doaj   +1 more source

A local defect resonance for linear and nonlinear ultrasonic thermography [PDF]

open access: yes, 2014
An efficient wave-defect interaction is the key to a high thermal response of flaws in ultrasonic thermography. To selectively enhance defect vibrations a concept of local defect resonance is developed and applied to ultrasonic activation of defects ...
Solodov, I., Rahammer, M., Busse, G.
core   +1 more source

Application of ultrasonic vibrations in filtering of liquid [PDF]

open access: yesMechanics 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.   +2 more
openaire   +2 more sources

Ultrasonic-assisted anodic oxidation of 4H-SiC (0001) surface

open access: yesElectrochemistry Communications, 2019
An ultrasonic-assisted electrochemical mechanical polishing (UAECMP) technique that combines ultrasonic vibration and electrochemical mechanical polishing (ECMP) is proposed.
Xiaozhe Yang   +4 more
doaj   +1 more source

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