Abstract
Weft-knitted spacer fabrics with robust sound absorption ability had great application prospects in noise control engineering, but the relationship between structural parameters and sound absorption still required to be investigated further. In this work, a series of wet knit spacer fabrics with different structural parameters were fabricated, and the measured and predicted sound absorption coefficients were also compared. The results showed that the airflow resistivity was mainly determined by their density, thickness, porosity, and yarn arrangement. The sound absorption coefficient of samples can be enhanced with the increasing thickness and airflow resistivity, and the absorption tendency of double layer spacer fabrics assembled by samples with more yarns is coincident to those, and the coefficients were higher than 0.5 above 1000 Hz and higher than 0.8 above 2000 Hz. Sample numbers 6/4, 6/7, 12/10 exhibited the best sound-absorption ability among these samples in the high frequency bandwidth. In sum, the prepared weft-knitted spacer structure (consisting of top and bottom plain-knitted layers) with covered elastomeric yarns, has shown great potential in the application of noise reduction and control engineering.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.