南京航空航天大学k8凯发集团主页平台管理系统 李斌斌-k8凯发集团

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所属单位：材料科学与技术学院
发表刊物：textile research journal
关键字：sound insulation glass-fiber felt multi-layer air-layer
摘要：glass-fiber felts have emerged as a popular material for noise reduction. this paper investigates the effect of various morphologies (micro-layer, macro-layer and air-layer) of glass-fiber felts on sound insulation. the sound transmission loss is measured by a bruel & kjar (b&k) impedance tube. the results show that the sound insulation of glass-fiber felts can be improved by increasing the number of macro-layers. the comparison between the macro- and micro-layer of glass-fiber felts on sound insulation is systematically carried out. notably, the sound transmission loss of glass-fiber felts with similar areal density and thickness favors macro-layer structures over micro-layer structures. a simple model is established to explain this phenomenon. in addition, the sound transmission loss exhibits period fluctuations due to the presence of the air-layer between glass-fiber felts, which can be theoretically explained by the resonance effect. it is found that sound transmission loss can be improved by increasing the number of air-layers.
issn号：0040-5175
是否译文：否
发表时间：2017-02-01
合写作者：yang, yong,陈照峰,sui, ni,chen, zhou,xu, tengzhou,李玉芳,傅仁利,jing, yun
通讯作者：陈照峰,jing, yun,李斌斌