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- W1971306073 abstract "This study investigates the sound properties of fabric frictional sound (SPL, <TEX>${Delta}L$</TEX>, <TEX>${Delta}f$</TEX>) according to the film type of PTFE laminated vapor-permeable water-repellent fabrics in order to understand the relationship between SPL and the basic properties of fabrics such as layer, yarn type, and thickness of fiber. This study accesses their mechanical properties and determines how to control them to minimize SPL. Eight PTFE laminated water-repellent fabrics, composed of four different film types (A, B, C, D) and with two different fabrics, were used as test specimens. Frictional sounds generated at 1.21m/s were recorded by using a fabric sound generator and SPLs were analyzed through Fast Fourier Transformation (FFT). The mechanical properties of fabrics were measured by KES-FB. The SPL value was lowest at 74.4dB in film type A and highest as 85.5dB in type D. Based on ANOVA and post-hoc test, specimens were classified into less Loud Group (A, B) and Loud Group (C, D). It was shown that SPL was lower when 2 layer (instead of 3 layer), filament yarn than staple, and thin fiber than thick were used. In Group I, shearing properties (G, 2HG5), geometrical roughness (SMD), compressional properties (LC, RC) and weight (W) showed high correlation with SPL however, elongation (EM) and shear stiffness (G) did with SPL in Group II." @default.
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- W1971306073 date "2012-08-31" @default.
- W1971306073 modified "2023-10-16" @default.
- W1971306073 title "Basic and Mechanical Properties by Film Type to Minimize the Sound Pressure Level of PTFE Laminated Vapor-permeable Water-repellent Fabrics" @default.
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- W1971306073 doi "https://doi.org/10.5805/ksci.2012.14.4.641" @default.
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