Measurement of Drape Coefficients of Fabrics and Description of Hanging Shapes of Fabrics. Part 5. Relationship between Dynamic Drape Behavior of Fabrics and Mechanical Properties.

This study involves subjective and objective evaluation of drapeability of knitted textiles during the life cycle of a fabric. The life cycle of fabric was represented by forty laundry cycles in this paper. We examined the influence of knitting construction, fibre fineness, number of washing cycles and use of the fabric softener during the laundry cycle on the drape coefficient of the PET and viscose knitted fabrics, and also investigated the order of influence of these four factors on drape coefficient. A high degree of correlation was found between subjective score of drapeability and drape coefficient. We defined the tracking criterion to investigate the relevance between subjective drape score and mechanical parameters. An intelligent system based on fuzzy logic for correlating the drapeability and most relevant mechanical parameter was developed.

Section: Introductionmentioning

confidence: 99%

Interaction of wash-ageing and use of fabric softener for drapeability of knitted fabrics

Agarwal

Koehl

Perwuelz

2011

“…We have recently reported studies of the drape behavior of fabrics and we have achieved much progress [ 12,[19][20][21][22][23]. At first, we found that there existed an inherent node number for any fabric, and a conventional static drape coefficient D,,.…”

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confidence: 99%

“…Further, we examined the dynamic drape behaviors of fabrics precisely. We defined the revolving drape increase coefficient D,, which means the degree of spreading of overhanging fabrics with revolution, and the revolving drape coefficient at 200 rpm D2o«, which means the saturated spreading of fabrics at rapid revolution, and derived their regression equations [21,22]. Finally, we defined the dynamic drape coefficient with swinging motion D,,, which is considered to be similar to the human body's motion when walking, and also derived a regression equation from the basic mechanical parameters of fabrics [23].…”

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confidence: 99%

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Features of Conventional Static and New Dynamic Drape Coefficients of Woven Silk Fabrics

Matsudaira

Yang

2003

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Conventional static and new dynamic drape coefficients of silk woven fabrics are examined precisely to distinguish those features of each classified fabric by its yarn structure using our regression equations. We find that Shantung has large values of static drape coefficient D, and small node number n, revolving drape increase coefficient D,., and dynamic drape coefficient with swinging motion Dd. Chirimen is characterized by large values of Dr and Dd. Georgette has small values of revolving drape coefficient at 200 rpm, D200. Habutae has relatively large values of Ds and small n, and Dechine has relatively large values of Dr and Dd, but Fujiginu has no peculiar features. The differences between Fujiginu, Dechine, and Georgette become clear from the discriminant analysis, using the five drape parameters as variables. New dynamic drape coefficients are more useful for characterizing each classified silk fabric.

“…' Recently, we investigated the dynamic drape behavior of fabrics (Yang and Matsudaira [15][16][17]), and we defined drape coefficients in the revolving state and also with a swinging motion, proposing a relationship between those coefficients and the basic mechanical parameters obtained by the KES system. Further, we investigated the revolving drape coefficients of polyester Shingosen fabrics and reported the results quite recently [ l0], but we have not yet investigated the dynamic drape coefficient with swinging motion, hence the present investigation.…”

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confidence: 99%

Polyester "Shingosen" Fabrics Characterized by Dynamic Drape Coefficient with Swinging Motion

Matsudaira

Yang

Kinari

et al. 2002

Self Cite

The static and dynamic drape behavior of polyester Shingosen fabrics is investigated using the new mechanical parameter of dynamic drapability, that is, the dynamic drape coefficient with swinging motion Dd. The Dd of the Peach Face fabric is small and that of the New Worsted fabric is large. On the other hand, there are almost no differences between each group of Shingosen fabrics in node numbers and conventional static drape coefficients. In classifying production characteristics, yam-processing fabrics show larger values of Dd than other fiber-production and fabric-finishing samples. In classifying fiber characteristics contractile fiber and ultra-fine fiber Shingosen fabrics show smaller values of Dd than irregular fiber fabrics.