Effects of Macroscopic Pores on the Damping Behaviors of Metal Materials

Abstract:

Article Preview

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 et al., "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

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.