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- Title
Down-film as a new non-frame porous material for sound absorption.
- Authors
Zhang, Tingying; Zhang, Jiyang; Hou, Hong; Xu, Ying; Chen, Kean
- Abstract
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.
- Subjects
POROUS materials; ABSORPTION of sound; FREQUENCIES of oscillating systems; SOUND waves; ABSORPTION coefficients
- Publication
Scientific Reports, 2024, Vol 11, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-024-62526-w