Bending Vibrational Properties of Fabrics Part 3: Analysis of Fabric Parameters in Bending Vibration and Features of Those by Various Fabrics.:Part 3 : Analysis of Fabric Parameters in Bending Vibration and Features of Those by Various Fabrics

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(1) The Theoretical equation of the amplitude decrease of the 1st step in bending vibration (=Δd1) derived in the former paper was explained more precisely. In the comparison between woven and knitted fabrics, Δd1 of knitted fabrics is larger and S1 (vibration duration period of the 1st step), S2 (vibration duration period of the 1 st step and the 2nd step) are smaller. Δd2 (amplitude decrease of the 2nd step) showed similar values in both fabrics. Δd1 of spun yarn fabrics is larger than that of filament yarn fabrics, and bending vibration stops sooner in spun yarn fabrics. Δd2 showed similar values in both fabrics. By cluster analysis, it was shown that a combination of the parameters; Δd1, S2, B is best for classifying spun or filament yarn fabrics, and that a combination of the parameters; Δd2, S1, 2HB is best for classifying wool, cotton or silk fabrics.
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