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Characteristics of sounds generated from vapor permeable water repellent fabrics by low-speed frictions

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Abstract

To investigate the sound properties by low-speed frictions (0.2 m/s and 0.5 m/s) which occur when two fabrics are rubbed by wearer’s slow movement, six specimens are selected by cluster analysis among seventy-one vapor permeable water repellent fabrics for outdoor sportswear. Their sound spectra are obtained from the FFT analysis. Physical sound properties (LPT, ΔL, Δf) and Zwicker’s psychoacoustic parameters-loudness(Z), sharpness(Z), roughness(Z), and fluctuation strength(Z)-are calculated from the sound spectra. Mechanical properties of the fabrics are measured with the KES-FB system. The amplitudes of the sound spectra of all the specimens at 0.5 m/s are higher than those at 0.2 m/s throughout the entire range of frequencies. As the frictional speed changed from 0.2 m/s to 0.5 m/s, the LPT increases about 16 dB, and the loudness(Z) and fluctuation strength(Z) increase about 3 times and 2 times, respectively. The SMD and Weight at the two low frictional speeds are the important factors which affect the sound properties of vapor permeable water repellent fabrics.

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Authors and Affiliations

  1. Human Ecology Research Institute, Yonsei University, Seoul, 120-749, Korea

    Chunjeong Kim, Yoonjung Yang & Gilsoo Cho

  2. Department of Clothing and Textiles, Yonsei University, Seoul, 120-749, Korea

    Yoonjung Yang & Gilsoo Cho

Authors
  1. Chunjeong Kim
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  2. Yoonjung Yang
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  3. Gilsoo Cho
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Correspondence to Gilsoo Cho.

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Kim, C., Yang, Y. & Cho, G. Characteristics of sounds generated from vapor permeable water repellent fabrics by low-speed frictions. Fibers Polym 9, 639–645 (2008). https://doi.org/10.1007/s12221-008-0100-7

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  • DOI: https://doi.org/10.1007/s12221-008-0100-7

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