Results 21 to 30 of about 91,828 (288)

Running performance of an aerodynamic journal bearing with squeeze film effect [PDF]

, 2013
Results of theoretical and experimental studies concerning the performance of an aerodynamic journal bearing which running is assisted by squeeze film ultrasonic levitation (SFUL) are presented in this paper.
Ha, Ono, Salbu, Shigeka Yoshimoto, Stolarski, Stolarski, Stolarski, Stolarski, Tadeusz Stolarski, Tomohiro Shou, Vandaele, Wiesendanger, Xue, Yoshimoto   +13 more
core   +1 more source

Modal analysis and nonlinear characterization of an airborne power ultrasonic transducer with rectangular plate radiator [PDF]

, 2018
Some industrial processes like particle agglomeration or food dehydration among others can be enhanced by the use of power ultrasonic technologies.
Acosta, V.M., Andrés, R.R., Lucas, M., Riera, E.   +3 more
core   +1 more source

Research progress and prospects of ultrasonic vibration in coal rock fracturing

Meitan 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, Zhijun NIU, Lei ZHANG, Xiangyu LI, Jiyao WANG, Zechao CHANG, Xuyang CHEN   +6 more
doaj   +1 more source

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

Advances 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, Shuliang Liu, Wu Liu, Chaoqun Wu   +3 more
doaj   +1 more source

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

Electrochemistry Communications, 2019
An ultrasonic-assisted electrochemical mechanical polishing (UAECMP) technique that combines ultrasonic vibration and electrochemical mechanical polishing (ECMP) is proposed.
Xiaozhe Yang, Xu Yang, Kentaro Kawai, Kenta Arima, Kazuya Yamamura   +4 more
doaj   +1 more source

A Study of Static and Dynamic Mechanical Behavior of the Substrate in Ultrasonic Consolidation [PDF]

, 2006
A new 2-D FEM model is developed for a fundamental study of the time dependent mechanical behavior of the substrate in ultrasonic consolidation. The simulation shows that for a given vibration condition, the amplitude of contact friction stress and ...
Li, Leijun, Zhang, Chunbo
core   +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

Monitoring of lubricant film failure in a ball bearing using ultrasound [PDF]

, 2006
A lubricant-film monitoring system for a conventional deep groove ball bearing (type 6016, shaft diameter 80 mm, ball diameter 12.7 mm) is described. A high-firequency (50 MHz) ultrasonic transducer is mounted on the static outer raceway of the bearing ...
Anderson, Astridge, Bruce W. Drinkwater, Cameron, Drinkwater, Dwyer-Joyce, Dyson, Glavatskih, Hamrock, Hamrock, Harris, Hill, Jacobson, Jie Zhang, Krautkramer, Miettinen, Miettinen, Pialucha, Rob S. Dwyer-Joyce, Stachowiak, Zhang, Zhang   +21 more
core   +1 more source

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

Micromachines, 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

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