噪声与振动控制2017，Vol.37Issue(1)：167-171,5.DOI:10.3969/j.issn.1006-1335.2017.01.036
铝纤维板的复合结构吸声性能分析
Research on Low Frequency Sound Absorption Property of the Structures Composed of Aluminum Fiber Sheets
摘要
Abstract
To solve the problem of low frequency noise in substations,two kinds of aluminum fiber sheets are developed and studied.The influence of areal density and air cavity on low frequency sound absorption property of the aluminum fiber sheets is analyzed based on impedance tube method.The composite structures by combining the aluminum fiber sheets with polyester fibers and combining the aluminum fiber sheets with Helmholtz resonator are prepared respectively.And their low frequency sound absorption properties are studied and compared.The results show that the influence of the areal density on the sound absorption coefficient of the aluminum fiber sheets is small;the low frequency sound absorption coefficient of the aluminum fiber boards can be improved by increasing the cavity thickness,but the sound absorption coefficient at the frequency of 100 Hz is still low;Both the composite structure of the aluminum fiber sheets with polyester fibers and the composite structure of the aluminum fiber sheets with Helmholtz resonator have much better low frequency sound absorption property than the pure aluminum fiber sheets,especially at the frequency of 100 Hz,the sound absorption can reach 0.9 or even higher.So,they are feasible for low frequency noise reduction in substations.关键词
声学/变电站/低频噪声/铝纤维板/吸声性能/复合结构Key words
acoustics/substation/low frequency noise/aluminum fiber sheet/sound absorption property/composite structure分类
建筑与水利引用本文复制引用
周兵,涂琪,倪园,王延召,李晨辉,胡静竹..铝纤维板的复合结构吸声性能分析[J].噪声与振动控制,2017,37(1):167-171,5.基金项目
国家自然科学基金资助项目(10972056) （10972056）
福建省自然科学基金资助项目(2016J01001) （2016J01001）
福建农林大学科技发展基金资助项目(KF2015026 （）
KF2015027) （）
