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- Title
Estimation of Sound Transmission Loss in Nanofiber Nonwoven Fabrics: Comparison of Conventional Models and the Simplified Limp Frame Model.
- Authors
Sakamoto, Shuichi; Hasegawa, Tsukasa; Ikeda, Koki
- Abstract
Although the sound absorption coefficients of conventional and nanofiber nonwoven fabrics (NF-NWFs) have been the subject of many previous studies, few studies have considered the estimation of transmission loss. Reported herein is an experimental and theoretical study into estimating the transmission loss of NF-NWFs using four estimation models, i.e., the Rayleigh, Miki, and Komatsu models, and the simplified limp frame model (SLFM), with the model results compared against the experimental data. The transmission loss of the NF-NWF was determined from the propagation constant, and characteristic impedance was calculated using the estimation model and the transfer matrix method. The validity of each estimation method was examined by comparing its estimated values with the experimental values measured using a four-microphone impedance measurement tube. The proposed SLFM is more suitable for estimating the transmission loss of NF-NWFs than the conventional Rayleigh, Miki, and Komatsu models.
- Subjects
TRANSMISSION of sound; NONWOVEN textiles; ABSORPTION of sound; TRANSFER matrix; ABSORPTION coefficients
- Publication
Nanomaterials (2079-4991), 2023, Vol 13, Issue 22, p2947
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano13222947