Measurement and Analysis of Sound Absorption of Porous Magnesium


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Lotus-type porous magnesium whose long cylindrical pores were aligned in one direction was fabricated by unidirectional solidification of the melt dissolving hydrogen in a pressurized hydrogen atmosphere. The sound absorption coefficient of porous magnesium whose specimen face has many open pores was measured by standing-wave method in the range up to the frequency of sound of 4 kHz. The relationship between absorption coefficient and pore structure of porous magnesium was studied. The absorption coefficient increases with decrease of the pore size, while it increases with increase of the porosity. Moreover, the peak value with high absorption coefficient is shifted toward higher frequency of sound when the thickness of the porous magnesium specimen decreases.



Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi




Z. K. Xie et al., "Measurement and Analysis of Sound Absorption of Porous Magnesium", Materials Science Forum, Vols. 449-452, pp. 661-664, 2004

Online since:

March 2004




[1] A. Nakano, Decreasing Noise Technology㧘Chapter of Technological Study Co., Ltd, Tokyo, Japan (1993), p.84.

[2] H. Nakajima, Tokukaihei 10-88254.

[3] H. Nakajima, Tokukaihei 10-227624.

[4] S. K. Hyun, Y. Shiota, K. Murakami and H. Nakajima, Proc. Int. Conf. on Solid-Solid Phase Transformations ’99 (JIMIC-3), M. Koiwa, K. Otsuka and T. Miyazaki(Eds. ), Japan Inst. Metals, Kyoto, Japan(1999), pp.341-344.

[5] S. K. Hyun, K. Murakami and H. Nakajima, Mater. Sci. Eng., A299 (2001), 241-248.

[6] H. Nakajima, S. K. Hyun, K. Ohashi, K. Ota and K. Murakami, Colloids Surfaces A: Physicochem. Eng. Aspects, 179 (2001), 209-214.

[7] S. K. Hyun, Y. Shiota, K. Murakami and H. Nakajima, Cellular Metals and Metal Foaming Technology, ed. J. Banhart, M. F. Ashby and N. A. Fleck, MIT, Verlag (2001), pp.421-424.

[8] H. Nakajima, S. K. Hyun and K. Murakami, Advanced Tech. Mater., 13-18 (2002), 13-18.

[9] S. Kimura, Architectural Sound and Anti-noise Plan, Shokokusha Publishing Co., Ltd, Tokyo , Japan (1977), p.142.

[10] S.K. Hyun, and H. Nakajima, Materials Letters, 4303 (2003), 1-6.

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