JOURNAL of the JAPAN RESEARCH ASSOCIATION for TEXTILE END-USES
Online ISSN : 1884-6599
Print ISSN : 0037-2072
ISSN-L : 0037-2072
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Volume 45, Issue 10
Displaying 1-5 of 5 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    2004 Volume 45 Issue 10 Pages 748-755
    Published: October 25, 2004
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.11419/senshoshi1960.45.748
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    2004 Volume 45 Issue 10 Pages 756-761
    Published: October 25, 2004
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.11419/senshoshi1960.45.756
    JOURNAL FREE ACCESS
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  • The Evaluation of Mechanical Properties of Braids on the Market Under Tensile Loading
    Miwako HANADA, Tsuyoshi NISHIWAKI
    2004 Volume 45 Issue 10 Pages 766-772
    Published: October 25, 2004
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.11419/senshoshi1960.45.766
    JOURNAL FREE ACCESS
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    This paper describes various mechanical properties of polyester braids under the tensile loading with an evaluation method proposed in our previous paper. The braid structure used is a Marukara braiding (2/2 braid, 16 bundles) which is a commercial shoe lace. The effects of sample length on tensile properties of braids were investigated and from these results it was clarified that the evaluated mechanical properties became a constant in the case that the sample length is longer than 100mm. In order to investigate the effects of braiding structure on the mechanical properties, the polyester braids with various cross sectional shapes are evaluated. As a result, it was clarified that the circular cross-sectional shape could be deformed easily, as compared with those of oval and rectangular sections. Deformation ability was improved without the increase in the modulus by inserting an axial fiber into braids. Also, it was confirmed that the braid has an apparent Poisson's ratio beyond 3 by the cross-sectional observation under different level of a tensile loading.
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  • Tensile Properties of Braids Under the Tensile Loading and Evaluation Method of Knotting Stability
    Miwako HANADA, Tsuyoshi NISHIWAKI
    2004 Volume 45 Issue 10 Pages 773-779
    Published: October 25, 2004
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.11419/senshoshi1960.45.773
    JOURNAL FREE ACCESS
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    Braids have been applied to various scenes in our life. Recently a shoelace that is used for wearing shoes is the most representative example of braids. The shoelace is fastened and unfastened repeatedly. The purpose of this study is to propose an evaluation method of properties for unfastening a braid knot. The proposed evaluation method is as follows; At first the tensile properties of four kinds of commercial braids were evaluated. Secondly, “single noose”are stretched with a tensile load of 50N or 100N to tighten up a knot. Then the test specimen was stretched by chucking the both edges. Some characteristic values related to unfastening the knot are defined from the load displacement curve. As a result, it was found that the characteristic values depend on a braiding structure, a cross sectional shape and an initial fastening load.
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  • ERRATUM
    2004 Volume 45 Issue 10 Pages 784
    Published: 2004
    Released on J-STAGE: September 30, 2010
    DOIhttps://doi.org/10.11419/senshoshi1960.45.10_784
    JOURNAL FREE ACCESS
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