【摘要】 本文研究了功能材料泡沫铝消音性能及其随孔隙结构及成形方法的变化情况。结果表明：泡沫铝在１２５Ｈｚ～１６ＫＨｚ范围内均具有较好的消音效果，平均降噪１５ｄＢ～３５ｄＢ，最大降噪４６ｄＢ，是一种良好的消音吸声材料。更多还原

【Abstract】 The influence of proe-strctural parameters of Foam Al-allors and processing methods of Al-alloys on sound absorption properties has been studied.The result show that Foam Al-alloys have good sound absorption properties in 125～1600Hz range.The average values of sound absotption is between 15～35dB.The maximum value is 46dB.Thus ,Foam Al-alloys is a kind of good sound absorption materials. [WT4”HZ〗更多还原