[비의류제품] Sound Absorption Behavior of Knitted Spacer Fabrics 출판일 : 2010.11.01 저자 : Yanping Liu and Hong Hu 서지사항 : Textile Research Journal, Volume 80, Issue 18, 1949 페이지 등록일 : 2011.03.21 I 조회수 : 219 작성자 : admin |
This paper presents an experimental investigation on the sound absorption behavior of
knitted spacer fabrics. Both weft-knitted and warp-knitted fabrics were used in the study
due to their different structure features. The weft-knitted spacer fabric used was composed
of two varied plain knitted outer layers and one textured polyester multifilament spacer layer,
and it was considered as a porous sound absorber. The warp-knitted spacer fabric used
was made with mesh structure on the outer layers and monofilament yarn in the spacer
layer, and it was considered as microperforated panel sound absorber. The noise
absorption coefficients (NACs) of these two kinds of fabrics under both single and
multilayer forms as well as their combinations were tested using a two-microphone
impedance measurement tube. The results show that the fabric surface structure and
thickness, spacer yarn type and their connecting ways, fabric combinations and their
arrangement methods have significant effects on the sound absorbability. The results also
demonstrate that good sound absorbability could be achieved by using knitted spacer
fabrics if suitable fabric structures and combinations are used.
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