Sound insulation properties of honeycomb sandwich structure composite for high-speed train floors

被引：0
|
作者：
Hu Q. [1 ]
Bian G. [2 ]
Qiu Y. [2 ,3 ]
Wei Y. [2 ,4 ]
Xu Z. [1 ]
机构：
[1] School of Textile and Garment, Anhui Polytechnic University, Wuhu
[2] College of Textiles, Donghua University, Shanghai
[3] College of Textiles and Apparel, Quanzhou Normal University, Quanzhou
[4] Center for Civil Aviation Composites, Donghua University, Shanghai
来源：
Fangzhi Xuebao/Journal of Textile Research | 2021年 / 42卷 / 10期
关键词：
Aramid honeycomb sandwich; Glass bead; Prepreg; Rail vehicle floor; Sound insulation property;
D O I：
10.13475/j.fzxb.20210107009
中图分类号：
学科分类号：
摘要：
In order to meet the lightweight and sound insulation requirements of bullet trains and automobiles, honeycomb sandwich composite structure made from various fibers were created. The influence of honeycomb core specifications (density and side length), panel materials (carbon fiber, glass fiber, polyphenylene sulfide (PPS)) and glass microbeads modification on sound insulation performance was analyzed by hot pressing method and four-sensor impedance tube method. The results show that the sound insulation performance is improved with the increase of the density of the honeycomb core, but the side length of the honeycomb core has little effect on the sound insulation. In the region of 100-2500 Hz, the honeycomb sandwich panel with PPS as inner layer, carbon fiber as outer layer and glass beads content of 5% shows the best sound insulation, with an average improvement of 5-8 dB. Compared with the standard aluminum honeycomb sandwich panel used for the current 350 km/h motor vehicle, the aramid honeycomb panel not only exhibits similar sound insulation performance, but also can achieve about 30% weight reduction. It was concluded that the aramid honeycomb sandwich panel has the application potential for replacing the standard aluminum honeycomb as a new generation of sound insulation floor for bullet trains. © 2021, Periodical Agency of Journal of Textile Research. All right reserved.
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页码：75 / 83
页数：8
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