| 组合形式对打孔闭孔泡沫铝板吸声效果的影响 |
| |
| 引用本文： | 梁李斯,姚广春,穆永亮,华中胜.组合形式对打孔闭孔泡沫铝板吸声效果的影响[J].中国有色金属学报,2011(9). |
| |
| 作者姓名： | 梁李斯 姚广春 穆永亮 华中胜 |
| |
| 作者单位： | 东北大学材料与冶金学院; |
| |
| 基金项目： | 国家高技术研究发展计划资助项目(2008AA03Z512); 国家自然科学基金资助项目(50774021) |
| |
| 摘 要： | 将不同打孔率、厚度、打孔方式的闭孔泡沫铝板与玻璃棉进行组合,使用驻波管吸声测试仪进行吸声系数测试,研究组合形式对闭孔泡沫铝板吸声效果的影响。结果表明,通过对吸声峰值、降噪系数、半峰宽值的计算和比较可以看出,吸声峰值在低频的试样在前、峰值在高频的试样在后的组合形式有利于吸声,出现两个吸声峰,降噪系数和半峰宽值也都大大提高;打孔闭孔泡沫铝板与玻璃棉的组合使峰值略有提高,但性能总体的改变不大,而玻璃棉本身易造成环境污染,因此,该种组合不适于在吸声领域应用。
|
| 关 键 词： | 吸声系数 泡沫铝 玻璃棉 打孔 吸声结构 |
Effect of combining form on sound absorption of closed-cell aluminum foam perforated |
| |
| LIANG Li-si,YAO Guang-chun,MU Yong-liang,HUA Zhong-sheng.Effect of combining form on sound absorption of closed-cell aluminum foam perforated[J].The Chinese Journal of Nonferrous Metals,2011(9). |
| |
| Authors: | LIANG Li-si YAO Guang-chun MU Yong-liang HUA Zhong-sheng |
| |
| Affiliation: | LIANG Li-si,YAO Guang-chun,MU Yong-liang,HUA Zhong-sheng (School of Materials and Metallurgy,Northeastern University,Shenyang 110089,China) |
| |
| Abstract: | The closed-cell aluminum foams with various specimen thicknesses,perforation ways and perforation rates were grouped with glass wool.The sound absorption coefficient was measured by standing-wave method,and the effect of combining form on the sound adsorption of closed-cell aluminum foam perforated was studied.The results show that,being evaluated by the maximum of sound absorption coefficient,noise reduction coefficient and half-peak breadth,the specimens with the maximum of sound absorption coefficient at... |
| |
| Keywords: | sound absorption coefficient aluminum foam glass wool perforation sound absorption structure |
| 本文献已被 CNKI 等数据库收录！ |
|
