Down-film as a new non-frame porous material for sound absorption

被引：1

作者：

Zhang, Tingying ^{[1
]}

Zhang, Jiyang ^{[1
]}

Hou, Hong ^{[1
]}

Xu, Ying ^{[1
]}

Chen, Kean ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian, Shaanxi, Peoples R China

来源：

SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Down; Film; Non-frame; Vibration; Sound absorption performance; MICRO-PERFORATED PANEL; ACOUSTIC PERFORMANCE; SEMIANALYTICAL MODEL; FIBROUS MATERIALS; PROPAGATION; COEFFICIENT; PARAMETERS; TORTUOSITY; CAVITY;

D O I：

10.1038/s41598-024-62526-w

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Down-polyethylene film material has been introduced for the first time as an excellent non-frame sound absorber, showing a distinctively outstanding performance. It contains down fiber adjacent to each other without firm connection in between, forming a structure of elastic fiber network. The unique structure has broadband response to sound wave, showing non-synchronous vibration in low and middle frequency and synchronous vibration in middle and high frequency. The broadband resonance in middle and high frequency allows the structure to achieve complete sound absorption in resonance frequency band. Moreover, down-polyethylene film material possesses forced vibration, corresponding sound absorption coefficient has been obtained based on vibration theory. The down-film sound absorption material has the characteristics of light weight, soft, environment-friendly, and has excellent broadband sound absorption performance.

引用

页数：15

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