繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
検索
詳細検索
OR
閲覧
検索
60 巻, 2 号
選択された号の論文の12件中1～12を表示しています
すべての抄録を表示する
    • |<
    • <
    • 1
    • >
    • >|
時評
連載〈やさしい繊維基礎講座〉
解説
レポート
一般報文
  • Evaluation of Proton Exchange Membrane Reinforced
    Masao Sudoh, Keiichi Okajima, Ippei Osaki, Hajime Tsuda, Takanori Suzu ...
    2004 年 60 巻 2 号 p. 39-43
    発行日: 2004年
    公開日: 2006/02/09
    DOIhttps://doi.org/10.2115/fiber.60.39
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    Ion exchange membranes for fuel cell are expected to become thinner in order to reduce the membrane resistance. On the other hand, a thinner membrane has a weaker mechanical strength. The novel proton-exchange membranes were prepared by reinforcing with two kinds of 100 % PTFE fiber sheets, which were fabricated by a papermaking method with or without uniaxially stretching as the core for a reinforced membrane. The stress, the strain, water content, ion exchange capacity and ionic conductivity were measured for different membranes. By pre-treating the PTFE sheet at 320 degree and hot-pressing the membrane at 140 degree, a strength of 27 MPa was obtained for the membrane reinforced with a PTFE sheet in the machine direction (MD) and 21 MPa in the transverse direction (TD). The tensile yield stress was almost the same as that of Nafion112 in both directions. The water content and proton conductivity of the membrane reinforced with the PTFE sheet decreased to less than 28.3 % and 20 % when compared to that of Nafion112, respectively. The obtained ion exchange capacity was 0.89 mol/kg-dry.
    抄録全体を表示
    PDF形式でダウンロード (342K)
  • 初期荷重下における組紐の引張力学特性評価手法
    花田 美和子, 西脇 剛史, 仲井 朝美, 濱田 泰以
    2004 年 60 巻 2 号 p. 44-49
    発行日: 2004年
    公開日: 2006/02/09
    DOIhttps://doi.org/10.2115/fiber.60.44
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    Braids have been applied to various components for over one thousand years. Binding, bundling and hanging are listed in the representative uses of braids. The braids have characteristic mechanical properties, low modulus, large deformability, variable Poisson's ratio and low stiffness under flexural and compressive loads, and so on. Evaluation method of the braid properties has not been established. In order to clarify mechanical properties of the braids under the initial tensile loading quantitatively, an evaluation method is proposed in this study. By the application of the proposed method to three kinds of glass fiber braids, effects of braiding structure on the mechanical properties are discussed. Therefore the valid tensile testing method for evaluation of the braid properties could be proposed.
    抄録全体を表示
    PDF形式でダウンロード (390K)
  • 動画像解析による動的フレアースカートの揺動特性と外観評価
    杉村 桃子, 松平 光男
    2004 年 60 巻 2 号 p. 50-56
    発行日: 2004年
    公開日: 2006/02/09
    DOIhttps://doi.org/10.2115/fiber.60.50
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    The purpose of this study is to find out a parameter of swinging properties of moving flared skirts objectively from the appearance of the flared skirts in dynamic state. We took the appearance of the flared skirt with swinging by the CCD camera and analyzed the pictures with moving image processing system. The correlation between these swinging properties of flared skirts, and mechanical properties and subjective evaluation is examined. As a result, the appearance of a moving flared skirt is expected to be dominated by the amount of changeable hem width rather than the maximum hem width. The maximum hem width at turn-round angle 30 degrees has a tendency to be related to shear properties such as G, 2HG5 and 2HG and compound mechanical parameters and shear vibrational properties. On the other hand, the difference between the maximum and minimum hem width of a moving flared skirt at the same turn-round angle correlated to shear vibrational properties and bending vibrational properties such as d1, d2, S1 and S2. The ratio of dynamic hem width at turn-round motion to static hem width is correlated highly with subjective appraisals.
    抄録全体を表示
    PDF形式でダウンロード (559K)
  • A Soft Mannequin for the Evaluation of Pressure Garments on Human Body
    Winnie YU, Jin-tu FAN, Xiao-ming QIAN
    2004 年 60 巻 2 号 p. 57-64
    発行日: 2004年
    公開日: 2006/02/09
    DOIhttps://doi.org/10.2115/fiber.60.57
    ジャーナル フリー
    抄録を表示する抄録を非表示にする
    In an effort to simulate the human body for measuring contact pressure, a soft mannequin has been developed with the dimensions of the lower torso of a real female body. The mannequin contains a full-size bone skeleton, imitating soft tissue and skin. The imitated soft tissue is made from flexible polyurethane foam of different moduli, similar to the soft tissue in various body parts. Silicone rubber is used to simulate the human skin. Nine girdle specimens with changing combinations of three types of main fabrics, reinforcement and narrow elastics were tested on the same human subject and on the soft mannequin made of the same shape as the human subject's lower torso. Tests show that the pressure value obtained from the subject can be correlated to those obtained from the mannequin. The relationships are presented in eight linear equations. This soft mannequin provides a novel tool for evaluating the performance of pressure garments, without using expensive live models.
    抄録全体を表示
    PDF形式でダウンロード (712K)
技術報文
ノート
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top