Journal of the Textile Machinery Society of Japan
Online ISSN : 1881-1159
Print ISSN : 0040-5043
Volume 13, Issue 2
Displaying 1-3 of 3 articles from this issue
  • Part 2: Influences of Fiber Entanglements on Drawing a Fiber from Fiber Assembly
    M. Suzuki, H. Miyao, H. Nagashima, Y. Kubota, F. Hoshiai
    1967 Volume 13 Issue 2 Pages 35-48
    Published: 1967
    Released on J-STAGE: October 24, 2006
    JOURNAL FREE ACCESS
    Experiments by a method which uses a strain meter have shown that inter-fiber contacts and entanglements have a considerable bearing on drawing fibers from variously oriented fiber assembly.
    Force for drawing fiber from a parallel sliver shows only resistance force proportional to the fiber length. Force for drawing fiber from a fiber assembly is the sum of force proportional to the fiber length and force proportional to less than the cube of the fiber length.
    Force for fiber-drawing from a lap in the carding process is produced by interfiber contacts and entanglements of drawn fibers.
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  • Yutaka Narumi
    1967 Volume 13 Issue 2 Pages 49-57
    Published: 1967
    Released on J-STAGE: October 24, 2006
    JOURNAL FREE ACCESS
    The author has discovered a new practical formula on the compressive properties of fibre assemblies with the aid of van Wyk's theory and Wakayama's published work, and has attempted to clarify by this formula the properties of fiber assemblies in a reserve box.
    By applying this formula to the mechanical properties of fiber assemblies in a reserve box, he has derived a practical formula on the relation between apparent density γ(g/cm3) of fibre assemlies at the bottom of the reserve box and their height h(cm). The formula on the density-height relation has been compared with an experimental formula obtained from the results of experiments in which a reserve box was used. Two formulas presented themselves when cotton fiber assemblies were piled in a brass reserve box.
    (1) Practical formula: γ=0.002/μ(1-e-0.11•μ•h) where μ=0.103(2.86×10-8h3-1.63×10-5h2+3.78×10-3h-5.72×10-2)-0.443
    (2) Experimental formula: γ_??_2×10-2(2.86×10-8h3-1.63×10-5h2+3.78×10-3h-5.72×10-2)1/2 μ was the apparent coefficient of friction between fiber assemblies and the walls of the reserve box.
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  • Part 1: Young's Modulus of Polyester Resin Filled with Glass Particles and That Reinforced with Glass Fiber Clothes.
    Matsuo Maeda, Kenji Tanaka, Sadao Hibi, Katsuji Kakei
    1967 Volume 13 Issue 2 Pages 58-67
    Published: 1967
    Released on J-STAGE: October 24, 2006
    JOURNAL FREE ACCESS
    Two factors affect the mechanical properties of fiber glass-reinforced plastics (F. R. P.): (1) Glass volume fraction; (2) The configuration of glass filled. There are hardly any published analyses of the relation between these factors and the mechanical properties of F.R.P.
    This article investigates the relation between glass volume fraction and Young's modulus of F. R. P, in two different kinds of specimens-one, F. R. P. filled with glass particles; the other, F. R. P. reinforced with glass cloth-selected because they are the simplest of the various configurations of glass fiber with which F. R. P, is filled and because they differ radically from each other in shape.
    The article analyzes experimental results according to the isotropic non-homogeneous elastic theory and by means of mechanical models of the two-composite system. The model used in calculating experimental results on the F. R. P. reinforced with glass cloth was a new, modified model.
    The relation of Young's modulus to glass volume fraction, obtained from experimental results, agrees well with results calculated from the models. The relation between the dynamic modulus of F. R. P. and glass volume fraction below 10% is derived from the models at a temperature approximating the glass temperature of resin.
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