| Abstract |
| In this study various types of Al foam filled tubes were fabricated using foam of A1-12wt%Si by powder metallurgical process. Their energy absorbing efficiencies were investigated with compression test, focusing on the structure and bonding effects between tube and foam. The results show that the energy absorption is affected by structure of Al foam filled tube. Among fully foam filled tube, partially foam filled tube and Al hollow tube with the same weight, fully foam filled tube seems to have superior potential for industrial application to energy absorption parts. Also energy absorption efficiency is increased by interaction between tube and foam and especially, bonding between tube and metallic foam gives rise to increase the energy absorption efficiency up to above 1.2 times. This results from the arrest of folding of tube by metallic foam and the change of stress mode from uni-axial to multi-axial during compression. (Received September 30, 2004) |
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| Key Words |
| Aluminum foam filled tube, Energy absorption efficiency |
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