Results 51 to 60 of about 33,469 (308)

Fluid modelling of microfluidic separator channels [PDF]

, 2005
In a microfluidic ultrasonic separator device, the microchannel geometry is inherently angular due to the anisotropic etch processes used. A CFD model is used to investigate eddy formation induced by this angular geometry.
Hill, M., Harris, N.R., Wood, R.J.K, Townsend, R.J., White, N.M., Beeby, S.P.   +5 more
core   +1 more source

Mathematical modeling and experimental verification of a novel single-actuated ultrasonic elliptical vibrator

Advances in Mechanical Engineering, 2017
A innovative single-actuated ultrasonic elliptical vibrator was proposed in this study. The single-actuated ultrasonic elliptical vibrator is composed of a sandwich longitudinal piezoelectric transducer and a combined-beam horn.
Zhen Yin, Yucan Fu, Hua Li, Ziyang Cao, Yurong Chen   +4 more
doaj   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May, Finn‐Lennard Janthur, Lena Kreie, Michael Müller, Sarah Seffer, Nick Schwarz, Jörg Hermsdorf, Thomas Hassel, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

Removal mechanism of ultrasonic vibration and ELID composite plane grinding based on ultrasonic vibration of nano-ceramic workpiece [PDF]

, 2018
To realize the high efficiency mirror surface grinding of hard brittle materials (such as nano-ceramic material), this work firstly constructs an experimental platform for workpiece ultrasonic vibration and ELID combined plane grinding according to the ...
Ping Yan Bian, Bo Zhao, Shui Jun Shao
core   +2 more sources

Recent progress and development of vibration-assisted metal forming process

Journal of Materials Research and Technology
Ultrasonic vibration-assisted plastic processing technology effectively reduces the forming force during metal processing and enhances the overall performance and processing quality of materials by exploiting the surface and volume effects of ultrasonic ...
Zhichao Xu, Haolun Yang, Wenju Yang, Heshuai Yu, Xuefeng Guo, Hucheng Pan, Gaowu Qin   +6 more
doaj   +1 more source

Enhancement of the Al/Mg Dissimilar Friction Stir Welding Joint Strength with the Assistance of Ultrasonic Vibration

Metals, 2021
The assistance of ultrasonic vibration during the friction stir welding (FSW) process has been verified as an effective approach for the improvement of joint strength.
Yinghao Bai, Hao Su, Chuansong Wu
doaj   +1 more source

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

Advanced 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, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Modelling of forging processes assisted by piezoelectric actuators : principles and experimental validation [PDF]

, 2014
This paper presents the modelling of a forging processes assisted by a piezoelectric actuator (PA), which is used to generate specific low frequency vibration waveforms.
NGUYEN, Thanh Hung, ABBA, Gabriel, GIRAUD-AUDINE, Christophe, LEMAIRE-SEMAIL, Betty, Nguyen, T.H., NGUYEN, Thanh Nung, BIGOT, Régis   +6 more
core  

Incorporation of viscoelastic loss into the plane wave expansion approach to modelling composite transducers

, 2006
The plane wave expansion (PWE) method has been proposed as a theoretical model for periodic composite ultrasonic transducers. This paper extends previous work by importantly including viscoelastic loss in the material parameters.
A. J. Mulholland, Hayward, G., R. L. O�Leary, Mulholland, A.J., Mulholland, Anthony, G. Hayward, L.-A. Orr, Orr, L., O'Leary, R.L., O'Leary, Richard   +9 more
core   +1 more source