Measurement of Drape Coefficients of Fabrics and Description of Hanged Shapes of Fabrics. Part 2: Description of Hanged Shapes About Anisotropic Fabrics.

A new drape elevator is developed to analyze the drape generation mechanism. The drape elevator can measure drape shape, including node generation at various stages during drape formation. The drape elevator method indicates better reproducibility of the drape coefficient of the fabrics than the conventional method. The drape formation process is experimentally found to consist of three stages, seeds generation, their development, and the final stabilizing stages. A new parameter R, evaluating the shape of the drape, is defined in terms of the drape projection. Both the R parameter and the drape coefficient are expected to be useful parameters for the quantitative analysis of fabric drape formation.

Section: Evaluating Drape Formationmentioning

confidence: 99%

A New Apparatus for the Study of Fabric Drape

Mizutani

Amano

Sakaguchi³

2005

“…. The conventional static drape coefficient D, and node number n, are calculated from the following equations [ 18]: (b) Classification of Shingosen fabrics by production characteristics.…”

Section: Equations For Drape Coefficientsmentioning

confidence: 99%

“…where Ro is the radius of the circular supporting stand (=63.5 mm), ~a is a constant showing the total size of a two-dimensionally projected area (mm), b is a constant showing the height of a sine wave of the two-dimensionally projected shape (mm), and a~ and bm are constants showing fabric anisotropy. These constants come from the Ices mechanical parameters using the following equations [ 18]:…”

Section: Equations For Drape Coefficientsmentioning

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.

“…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,,.…”

mentioning

confidence: 99%

“…for a fabric could be measured by an image processing system with high accuracy and reproducibility [ 12]. Then we derived a regression equation for that coefficient, not only for isotropic fabrics, but also for anisotropic fabrics [ 19], and we analyzed the effect of the basic mechanical parameters of fabrics on those static drape shapes quantitatively with computer simulation [20]. Further, we examined the dynamic drape behaviors of fabrics precisely.…”

mentioning

confidence: 99%

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

Matsudaira

Yang

2003

Self Cite

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.