Results 261 to 270 of about 33,469 (308)

The Ultrasonic Measurement for Object Vibration

2009
This paper provides a kind of ultrasonic measurement for object vibration. Through the use of LabVIEW and ultrasonic sensors, the whole system would be simple and cost would be much lower. And then some key problems have been solved, such as the nearby wavelet produced by the ultrasonic sensor, the background noise and also the dead zone for ...
Li-Ping Zhang, Qiu Yu
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Foam Destabilization by Mechanical and Ultrasonic Vibrations

Journal of Colloid and Interface Science, 1999
The need to destabilize foams and control their formation arises in many industrial applications. Vibrations are known to affect the structure and rheology of various soft solids but have not been exploited in destroying persistent foams. Being noninvasive, they offer elegant potential alternatives to chemical and mechanical foam breaking techniques ...
, Morey, , Deshpande, , Barigou
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Frictional effect of ultrasonic-vibration on upsetting

Ultrasonics, 2007
The ultrasonic-vibration ring compression test and finite element analysis were performed on aluminum alloy specimens to explore the frictional effect of superimposing ultrasonic-vibration during upsetting. The extrapolated compression test was first adopted to obtain the frictionless material properties for finite element analysis.
Jung-Chung, Hung, Yu-Chung, Tsai, Chinghua, Hung   +2 more
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Seating of composite inlays with ultrasonic vibration

Dental Update, 1999
The use of vibration enables the clinician to use high-viscosity luting agents when seating composite inlays and allows quick and efficient placement of the inlay. The film of composite luting agent is achieved in a much shorter time and with lower loads by ultrasonic vibration than using manual methods. In order to achieve a thin lute, the vibrations
A D, Walmsley, P J, Lumley
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A vibrators alternation stepping ultrasonic motor

Ultrasonics, 2006
A new concept of a vibrators alternation stepping ultrasonic motor, based on longitudinal vibrations of rectangular Langevin resonators, is presented. The new motor fed by a single-phase resource without feedback is capable of bi-directions step displacements without accumulative displacement error.
Jiamei, Jin, Chunsheng, Zhao
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Solubilization of Erythrocyte Acetylcholinesterase by Ultrasonic Vibration

Nature, 1967
ERYTHROCYTE acetylcholinesterase (AChE) is strongly bound to the cell membrane1. To isolate and purify this enzyme, it must be removed from the membrane and brought into solution. Methods used for this purpose have included treatment with butanol2, digestion with pancreatin3, or addition of a surface-active material4,5. More recently, we have succeeded
J J, Gordon, J P, Rutland
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Ultrasonic Vibration Potentials

1982
Ultrasonic vibration potentials are phenomena which result from the interaction between ultrasonic waves and electrolytic solutions in the bulk or at interfaces.1 These effects have thus far received little attention in spite of the information that can be obtained from their study and their possible applications in various fields.
Raoul Zana, Ernest B. Yeager
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Influence of ultrasonic vibration on micro-extrusion

Ultrasonics, 2011
Micro-forming is a miniaturization technology with great potential for high productivity. Some technical challenges, however, need to be addressed before micro-forming becomes a commercially viable manufacturing process. These challenges include severe tribological conditions, difficulty in achieving desired tolerances, and short tool-life due to ...
Cristina, Bunget, Gracious, Ngaile
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A new ultrasonic vibration machine for honing

International Journal of Computer Applications in Technology, 2007
The ultrasonic vibration machine for honing is a new high-tech product that combined technologies with machine, electricity and sound. It can be widely used in motor vehicle industry to improve the surface quality of engine cylinder sleeve. In this paper, the constitution and the structure of this device are described in detail; the key technology such
X. J. Zhu, Y. X. Gao, H. J. Xu
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Method of oscillating ultrasonic vibrator for ultrasonic cleaning

The Journal of the Acoustical Society of America, 1996
An ultrasonic vibrator has a single natural frequency for radiating ultrasonic energy into a cleaning solution to clean and deburr workpieces that are immersed in the cleaning solution. A plurality of oscillating signals having respective different frequencies which are integral multiples of the natural frequency of the ultrasonic vibrator are ...
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