Compressional Properties of Fiber Assemblies. Part 2: Analysis of Compressional Parameters and Classification of Fabrics by Those Parameters.:Part 2 : Analysis of Compressional Parameters and Classification of Fabrics by Those Parameters
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概要
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In order to explain mechanical parameters of fabric compressional property more precisely, which were proposed in the former paper, physical meaning of those parameters was made clear. Regression constant; b<SUB>1</SUB>, which is obtained from 1st step of compressional curve and means initial compressional modulus of fabric, is related to yarn structure such as spun or filament. New regression equation; y=a<SUB>2</SUB>·exp (b<SUB>2</SUB>·x) +c<SUB>2</SUB>, is proposed for the 2nd step of compressional curve. This equation agrees better with experimental data than the former equation in which there is no auxiliary term c<SUB>2</SUB>. b<SUB>2</SUB> is related to the amount of compressional deformation and means hardness in compression because of friction between fibers. c<SUB>2</SUB> means linearity in semilogarithm coordinates and is connected with the conventional compressional parameter; LC (linearity). Regression constant; b<SUB>3</SUB>, which is obtained from 3rd step of compressional curve and means initial elastic modulus of fiber in lateral compression, is related to fiber material. The method of cluster analysis is carried out using three compressional parameters. For the purpose of dividing spun yarn fabrics and filament yarn fabrics, a combination of compressional parameters; b<SUB>1</SUB>, b<SUB>2</SUB> and LC, is the best. In order to divide wool, silk, polyester and cotton fabrics, a combination of compressional parameters; b<SUB>1</SUB>, b<SUB>3</SUB> and RC, is the best.
- 社団法人 日本繊維機械学会の論文