single-au.php

IJAT Vol.7 No.6 pp. 671-677
doi: 10.20965/ijat.2013.p0671
(2013)

Paper:

Development of Finishing System Using Acoustically Levitated Abrasive

Tomohiro Inada*, Libo Zhou**, Hirotaka Ojima**,
and Jun Shimizu**

*Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan

**College of Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan

Received:
March 31, 2013
Accepted:
July 8, 2013
Published:
November 5, 2013
Keywords:
standing wave, acoustic levitation, positioning, abrasive, inner surface finishing
Abstract

Based on the acoustic levitation phenomenon, we propose and develop an acoustic levitation / positioning system to control the movements of free abrasives to finish inner surfaces. Described in this paper are the theoretical analysis of levitation forces generated in a standing wave field and the results of experiments involving levitation and positioning. We first calculate the wave amplitude and frequency required to levitate the abrasives. Based on the results, we develop a system consisting of a sound transducer (speaker), a reflector (an aluminum plate), an amplifier, and a function generator, and we successfully not only levitate but also position actual abrasives in a tube. We find that the relation between the size and density of the abrasives and the strength of the acoustic field (wave amplitude and frequency) basically agree with the theoretical prediction. In addition, the kinetics of levitated abrasives, including their positions and movements, are precisely controlled by varying the wave frequency and switching from one node position to another.

Cite this article as:
T. Inada, L. Zhou, H. Ojima, and <. Shimizu, “Development of Finishing System Using Acoustically Levitated Abrasive,” Int. J. Automation Technol., Vol.7, No.6, pp. 671-677, 2013.
Data files:
References
  1. [1] Z. A. Gol’dberg, “Acoustic radiation pressure in high-intensity ultrasonic fields,” L. D. Rozenberg, (Ed.), p. 73, 1971.
  2. [2] V. N. Bindal, T. K. Saksena, S. K. Jain, and G. Singth, “Acoustic levitation and its application in estimation of high power sound field,” Appl. Acoust., Vol.17, pp. 125-133, 1984.
  3. [3] R. R. Whymark, Ultrasonic, pp. 251-261, Nov. 1975.
  4. [4] G. Reinhart and J. Hoeppner, “Non-contact handling using highintensity ultrasonic,” Annals of the CIRP, Vol.49, No.1, pp. 5-8, Jan. 2000.
  5. [5] T. Hayasaka and S. Yoshikawa, Acoustic oscillation, Maruzen, pp. 455-469, 1974.
  6. [6] H. Hatano, “Acoustic levitation for containerless processing,” Acoustical Society of Japan, Vol.52, No.3, pp. 197-202, 1996.

*This site is desgined based on HTML5 and CSS3 for modern browsers, e.g. Chrome, Firefox, Safari, Edge, IE9,10,11, Opera.

Last updated on Nov. 18, 2019