Paper Title:
Effects of Macroscopic Pores on the Damping Behaviors of Metal Materials
  Abstract

A large number of macroscopic pores were introduced into commercially pure aluminum (Al) and Zn-Al eutectoid alloy by air pressure infiltration process to comparatively study the influence of macroscopic pores on the damping behaviors of the materials. Macroscopic pores size are on the order of a millimetre (0.5~1.4mm) and in large proportions, typically high 76vol.%. The damping behavior of the materials is characterized by internal friction (IF). The IF was measured on a multifunction internal friction apparatus (MFIFA) at frequencies of 0.5, 1.0 and 3.0 Hz over the temperature range of 25 to 400 °C, while continuously changing temperature. The damping capacity of the metal materials is shown to increase with introducing macroscopic pores. Finally, the operative damping mechanisms in the metal materials with macroscopic pores were discussed in light of IF measurements.

  Info
Periodical
Edited by
Honghua Tan
Pages
1155-1162
DOI
10.4028/www.scientific.net/AMM.66-68.1155
Citation
J. N. Wei, G. M. Li, L. L. Zhou, X. Y. Zhou, J. M. Yu, T. C. Huang, "Effects of Macroscopic Pores on the Damping Behaviors of Metal Materials", Applied Mechanics and Materials, Vols. 66-68, pp. 1155-1162, 2011
Online since
July 2011
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$32.00
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