论文:2015,Vol:33,Issue(3):401-405
引用本文:
徐颖, 李珊, 王常力, 罗璐, 侯宏. 不锈钢纤维多孔材料吸声性能的研究[J]. 西北工业大学学报
Xu Ying, Li Shan, Wang Changli, Luo Lu, Hou Hong. Exploring Sound Absorption Performance of Stainless Steel Fiber Porous Materials[J]. Northwestern polytechnical university

不锈钢纤维多孔材料吸声性能的研究
徐颖, 李珊, 王常力, 罗璐, 侯宏
西北工业大学 航海学院, 陕西 西安 710072
摘要:
采用直径为6 μm、12 μm和22 μm的不锈钢纤维制备不同孔隙率,不同厚度的多孔材料。研究孔隙率、厚度、丝径,后空腔深度对吸声性能的影响。研究结果表明:孔隙率增大,厚度增大,丝径增大,平均吸声系数也随之提高,吸声性能提高。增加后空腔深度有利于提高低频吸声性能,但会出现吸收谷。并与人造毛毡的吸声性能对比,不锈钢纤维的吸声性能优于人造毛毡。
关键词:    多孔材料    不锈钢纤维    吸声系数   
Exploring Sound Absorption Performance of Stainless Steel Fiber Porous Materials
Xu Ying, Li Shan, Wang Changli, Luo Lu, Hou Hong
College of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
Abstract:
The diameters of selected fibers (wire diameter) are 6 μm, 12 μm and 22 μm. The selection of stainless steel fibers is the basic step for the preparation of sound-absorbing porous material of different porosities and thicknesses. It is found that porosity, wire diameter, thickness as well as underlying air layer in the material affect the sound-absorption property of the material. The depth of cavity shows a great influence on the sound absorption coefficient at lower frequencies,but there will be absorption valley. This study compares absorption properties of different stainless steel fibers and felts. The average sound absorption property of stainless steel fiber is better than those of other felts.
Key words:    absorption    acoustic impedance,acoustic wave absorption,design of experiments,energy dissipation,friction,porous materials,resonance,stainless steel,vibrations(mechanical)    absorption coefficient,stainless steel fibers   
收稿日期: 2014-11-04     修回日期:
DOI:
基金项目: 国家自然科学基金(11474230)资助
通讯作者:     Email:
作者简介: 徐颖(1963—),女,西北工业大学副教授,主要从事声学多孔材料的研究。
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