Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan)
Online ISSN : 1880-1994
Print ISSN : 0371-0580
ISSN-L : 0371-0580
Volume 45, Issue 8
Displaying 1-7 of 7 articles from this issue
  • Part 3 : Relationship between Shear and Bending Vibrational Properties of Fabrics and Beautiful Appearance of Skirt in Dynamic State
    Mitsuo Matsudaira
    1992Volume 45Issue 8 Pages T115-T121
    Published: August 25, 1992
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    In order to study the relationship between fabric shear and bending vibrational properties and beautiful appearance of clothes, correlation coefficients between those characteristic values and the score of beautiful appearance of moving flared skirt obtained subjectively were calculated. If the damping ratio of fabric shear vibration was smaller, the skirt was evaluated to be more beautiful. If the damping ratio of fabric bending vibration at small curvature (curved with large radius of curvature) was smaller, the skirt was evaluated to be more beautiful. There was no good correlation between the beautifulness of moving skirt and fabric weight, drape coefficient, SHINAYAKASA, and Total Hand Value.
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  • Hiroshi Sakabe, Toshio Matsuoka, Takashi Konishi, Hirokazu Kimura
    1992Volume 45Issue 8 Pages T122-T127
    Published: August 25, 1992
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    The changes in fiber morphology from wool carpet that had been abraded using the Wira abrasion tester was observed by means of scanning electron microscopy. In the early stage of the abrasion, it was observed that fibers were bent and twisted, and the cuticle was removed. Further abrasion produced longitudinal fracture fibers, followed by fibrillation of the cortex. These fractures occurred along the end-cuticle or cell membrane complex.
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  • Kunji Chiba, Kiyoji Nakamura
    1992Volume 45Issue 8 Pages T128-T134
    Published: August 25, 1992
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    Orientation state of fibers, which are suspended at very low concentration, in a fully developed Newtonian flow through a parallel plate channel has been computed from the Jeffery's orientation equation. Numerical predictions are also compared with the previous experimental results and the orientation evolution of fibers, whose initial locations and orientation angles at the entrance are assumed to be random, has been studied both along the channel and in the width direction.
    Fibers, which are injected in the entry section with orientations tilted to the streamlines, change their orientations to the streamlines during flow. This trend is remarkable in a region with higher velocity gradient, i. e. the region near the wall, in contrast the orientation angles of fibers do change a little in the region near the centerline. Furthermore, it appears that, when the aspect ratio becomes large, the fiber remains oriented most of the time along the streamline and the fiber fips over within a very short time.
    It is also clear that the alignment along the streamlines becomes worse from the wall to the centerline in the width direction. This is because that the velocity becomes higher and the velocity gradient becomes lower as the centerline is approached, thus the fibers require a longer distance to reach the alignment along the streamlines.
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  • K. Kawasaki
    1992Volume 45Issue 8 Pages P384-P388
    Published: August 25, 1992
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
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  • M. Awata
    1992Volume 45Issue 8 Pages P389-P393
    Published: August 25, 1992
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
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  • K. Akinaga
    1992Volume 45Issue 8 Pages P394-P403
    Published: August 25, 1992
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
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  • K. Hioki
    1992Volume 45Issue 8 Pages P404-P410
    Published: August 25, 1992
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
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