著者
今岡 春樹 岡部 秀彦 富羽 高子 山田 正紘 赤見 仁 渋谷 惇夫 相坂 登
出版者
The Society of Fiber Science and Technology, Japan
雑誌
繊維学会誌 (ISSN:00379875)
巻号頁・発行日
vol.45, no.10, pp.420-426, 1989-10-10 (Released:2008-11-28)
参考文献数
8
被引用文献数
10 14

We developed a three-dimensional apparel CAD system which simulated sample making and draping processes. In this paper, we explain the sample making system. Using this system, we can predict the shape of garment without actually making and fitting it. The basic idea for the system is that the natural shapes of garments are determined by four main factors, namely, mechanical properties of material fabrics, geometrical and topological shapes of paper patterns, shape of the human body and the way of dressing. The predicted shape of a garment changes according to these four factors. For example, there is some difference between the same pattern worn by different persons. Here we focus on the mechanical formulation of paper patterns and garments. To formulate them, we use the finite difference energy method which is one of the finite element discretization procedures. In terms of structure analysis, to predict the shape of garments is a large deformation and contact problem. To solve the large deformation problem, total Lagrangian formulation is employed in which 2nd Piola-Kirchhoff stress and Green-Lagrange strain are used. As for the contact problem, the existence of the human body is interpreted as a constraint condition. So, we describe the formulation of body surface. Finally we give some examples to show that this system is applicable to a wide range of garments.
著者
山田 稔
出版者
The Society of Fiber Science and Technology, Japan
雑誌
繊維学会誌 (ISSN:00379875)
巻号頁・発行日
vol.45, no.7, pp.P315-P322, 1989-07-10 (Released:2008-11-28)
参考文献数
6
著者
望月 政嗣
出版者
The Society of Fiber Science and Technology, Japan
雑誌
繊維学会誌 (ISSN:00379875)
巻号頁・発行日
vol.52, no.5, pp.P200-P208, 1996-05-10 (Released:2008-06-30)
参考文献数
20
被引用文献数
3 9
著者
中島 勝 熨斗 秀夫 今仲 明夫 山崎 隆 矢田 尚登
出版者
The Society of Fiber Science and Technology, Japan
雑誌
繊維学会誌 (ISSN:00379875)
巻号頁・発行日
vol.38, no.3, pp.T109-T115, 1982

The apparatus of mechanochemical turbine in the mechanical shape and materials similar to those designed by A. Katchalsky was constructed. The experiment on the driving of mechanochemical turbine was performed to make clear some obscure points in Katchalsky's paper such as proper condition of crosslinking treatment of collagen film, theoretically induced revolution number and situation of turning.<br>The following results were obtained; 1) crosslinking of collagen film with 2% formaldehyde aqueous solution and 10M LiBr aqueous solution as a contracting liquid were found to be suitable, 2) the equation of the calculated revolution number using the mechanochemical diagram was induced, 3) this turbine could not be turned continuously for a long period of time, but continuous several turnings were gained temporarily, and it was found that the observed revolution number was 2.5 sec<sup>-1</sup> and the power was 26.5mW closed to the figure of 30mW obtained by Katchalsky. The results indicate that the induced equation of revolution number is valid and the power of 26.5mW would be acceptable.
著者
山崎 華恵 今岡 春樹
出版者
The Society of Fiber Science and Technology, Japan
雑誌
繊維学会誌 (ISSN:00379875)
巻号頁・発行日
vol.52, no.6, pp.284-292, 1996-06-10 (Released:2008-06-30)
参考文献数
9
被引用文献数
2 1

The influence of wind blowing was investigated as an essential factor that should be taken into account when the motion and deformation of textile fabrics in the air are predicted by numerical simulation. A few alternative analytical models to express how the resistance of the air exerted on rectangular strips of cloth depends on the relative velocity of fluid were examined and compared with experimental observations. The obtained results suggested that the second order model, in which the air resistance depends on a linear combination of the. velocity and the square of it, gave a better approximation than the conventional model only with the first order term.
著者
Lina Wakako Toshiyasu Kinari
出版者
The Society of Fiber Science and Technology, Japan
雑誌
Journal of Fiber Science and Technology (ISSN:21897654)
巻号頁・発行日
vol.77, no.1, pp.9-18, 2021-01-15 (Released:2021-01-30)
参考文献数
27

In this study, the influences of the fabric color of pantyhose (PS) on the visually perceived surface roughness were investigated. Sensory evaluations and relevant statistical analyses of the visually perceived PS surface roughness (VPPSSR) were conducted using a plate-type leg model for Japanese females; the model was covered with beige-colored PS. The visual information of the PS-covered plate-type leg model did not provide visual features usable as cues for the visual evaluation of an objectʼs surface roughness, such as a highlight pattern. The PS-covered leg models used for the sensory evaluation included eight different beige fabric colors and three different apparent colors, owing to differences in the stitch density on the leg model. Additionally,the visual features obtained via an image analysis of the PS-covered leg model were examined. As a result, it was confirmed that the VPPSSR was influenced by the apparent color of the PS-covered leg model. In conclusion, the VPPSSR in beige-colored PS is influenced by the fabric color, especially the L* value; the brighter the fabric color, the finer the VPPSSR.
著者
菅沼 恵子
出版者
The Society of Fiber Science and Technology, Japan
雑誌
繊維学会誌 (ISSN:00379875)
巻号頁・発行日
vol.66, no.8, pp.194-198, 2010-08-10
参考文献数
9
被引用文献数
2

Rub-fastness of dyed fabrics is a matter of importance for practical use. Generally speaking, vat and naphthol dyes tend to suffer from poor rub fastness. However poor it is, it depends on the friction coefficient between dyed fabric and rubbed cloth. That is, smooth one should have good rub-fastness. In this paper rubbing-off behavior of denims using various white cloths is investigated from the kinetic viewpoint so that the interesting results are obtained. That is, the values of the rate constant k<sub>1</sub> of transfer of dye from dyed fabric to white cloth and the equilibrium constant K (k<sub>1</sub>/k<sub>-1</sub>) are ranged about ten times by various white cloths. These values depend on friction coefficient of white cloth, with having nothing to do with variety of fibers, fabrics and so on. Natural logarithm of each constant is linearly related to the reciprocal of friction coefficient. It suggests that the measurement of friction coefficient should be effective for standard of rub-test in addition to a designation of cloth or adjustment of moisture regain.