| 泡沫铝的声频内耗 |
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| 引用本文： | 刘长松,朱震刚,韩福生.泡沫铝的声频内耗[J].材料研究学报,1997,11(2):153-157. |
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| 作者姓名： | 刘长松 朱震刚 韩福生 |
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| 作者单位： | 中国科学院固体物理研究所内耗与固体缺陷开放研究实验室 |
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| 摘 要： | 研究了泡沫Ａｌ的声频内耗，结果表明：泡沫Ａｌ的内耗值比普通Ａｌ大一个量级以上，且随测量频率的增加而减小。出现了正常振幅效应。用平面波动方程，推导了泡沫Ａｌ的内耗与频率，孔隙率和孔径的关系，较好地解释了实验结果。
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| 关 键 词： | 体积分数 泡沫铝 声频内耗 |
| 收稿时间： | 1997-04-25 |
| 修稿时间： | 1997-04-25 |
RESEARCH ON THE INTERNAL FRICTION OF FOAMED ALUMINIUM IN ACOUSTIC FREQUENCY |
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| LIU Changsong,ZHU Zhengang,HAN Fusheng.RESEARCH ON THE INTERNAL FRICTION OF FOAMED ALUMINIUM IN ACOUSTIC FREQUENCY[J].Chinese Journal of Materials Research,1997,11(2):153-157. |
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| Authors: | LIU Changsong ZHU Zhengang HAN Fusheng |
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| Affiliation: | LIU Changsong,ZHU Zhengang,HAN Fusheng (Institute of Solids State Physics,Chinese Academy of Sciences) |
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| Abstract: | The internal friction of foamed aluminium in acoustic frequency has been studied. It shows that the internal friction of foamed aluminium enhanced in comparison with that of massive aluminium, the internal friction decreased when frequency was raised and the internal friction has normal amplitude effect.The relation of the internal friction with frequency, porosity and pore size were derived from the equation of plane waves in elastic material with voids. This is consistent with experimental results. |
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| Keywords: | foamed aluminium internal friction volume fraction |
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