Acoustic Properties of Materials for Vibration Reduction and Resistance on Ultra-Precision Machine

Abstract:

The porous ceramic holds good potential as acoustic resistance and vibration reduction material during ultra-precision machining. Porous materials absorb acoustic energy by friction with the air that moves inside the pores, and in this paper, the motion is simplified as the incompressible fluid in a single cylindrical pore. The analysis and calculation results show that the acoustic coefficient of porous ceramic is a complicated wave function and the acoustic absorption coefficient calculation model is feasible based on fluid thermal viscous theory. The acoustic absorption coefficient of porous ceramic increases with the increase of thickness, and its period and amplitude decreases with the increase of porosity of ceramic.

• Periodical: Key Engineering Materials (Volume 620)
• Pages: 140-145
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.620.140
• Online since: August 2014
• Authors: Dan Huang*, Ying Wang
• Keywords: Acoustic Absorption Coefficient, Porous Media, Ultra-Precision Machining, Viscous Flow

References

[1] J.L. Yuan, Z.W. Wang, D.H. Wen, B.H. Lu, and Y. Dai: Chin. J. Mech. Eng. Vol. 43(2007), p.35.

[2] H. Wang, S. To, C.Y. Chan, C.F. Cheung and W.B. Lee: International Journal of Machine Tools and Manufacture, Vol. 50(2010), p.241.

[3] U. Magrini and P. Ricciardi: Proceedings of Inter-noise 2000, pp.27-30, Nice, France (2000).

[4] M. Boit: J. Acoust. Soc. Am., vol. 28(1956), p.168.

[5] M.E. Delany and E.N. Bazley: Appl. Acoust. Vol. 105-116 (1970).

[6] Y. Miki: J. Acoust. Soc. Jpn. Vol. 19-24 (1990).

[7] Y. Champoux and J.F. Allard: J. Appl. Phys. Vol. 70(1991), p. (1975).

[8] Y. champoux and M.R. Stinson: J. Acoust. Soc. Am. Vol. 92 (1992), p.1120.

[9] L.S. Chen and J. Wang: Small internal combustion engine and motorcycle. Vol. 39(2010), p.19.