Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan)
Online ISSN : 1880-1994
Print ISSN : 0371-0580
ISSN-L : 0371-0580
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Volume 45, Issue 3
Displaying 1-7 of 7 articles from this issue
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  • Stress Relaxation Behavior of Carbon Cloth/Epoxy Composite
    Takuzi Yamaguchi, Long Guorong, Masakazu Tubokawa
    1992 Volume 45 Issue 3 Pages T27-T37
    Published: March 25, 1992
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.45.3_T27
    JOURNAL FREE ACCESS
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    The measurement of stress relaxation and constant rate of elongation for carbon cloth (plain weave) /epoxy composite of one ply has been carried out at the various temperatures from 30°C to 150°C under the small strain.
    The plots of relaxation modulus on a double logarithmic scale show nearly the straight lines. The intercept of the lines decreases with the increasing temperature and this behaviour reflects the stress relaxation characteristics of carbon cloth. The slope of the lines shows the maximum between 110°C and 130°C where epoxy resin shows glass transition, and the effect of direction of elongation to yarn axis on slope are disappears.
    The degree of anisotropy in relaxation in relaxation modulus is remarkable as time goes and temperature increases, and relaxation modulus shows the orthotropic anisotropy at temperatures.
    The caluculated stress-strain curves by Boltzmann's superposition principle agree with the observed curves within strain of about 0.3% at various temperatures.
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  • A Measuring Method for Heat and Moisture Transfer Behavior in Fabrics by Injecting Water to the Simulated Skin
    Hiromutsu Wakano, Soichi Otsuki, Kimihiro Adachi
    1992 Volume 45 Issue 3 Pages T38-T47
    Published: March 25, 1992
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.45.3_T38
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    The conventional plane heater method for the measurement of heat-moisture transportation properties through fabrics have been devised by injecting water through a teflon tube onto a glass fiber filter paper as a skin model.
    Operational merits of this method are no need of weighing and exchanging a wet filter for every measurement and little disturbance to the ambient condition. Further the weight and the temperature of water as well as the injection rate was freely controlled and the data of heat loss was measured accurately in real time even in the starting period of evaporation. These features make possible to simulate the various state of sweating and to measure the transient process of heat and moisture transportation.
    The leak of evaporated water through the gap between the frames was estimated below 2%. The observed value of evaporation heat of the whole water injected was found to be larger by 6% (max.) than the latent heat of evaporation value of water, because the transfer of dry heat might be accel reated by evaporation.
    These may be important factors on the interpretation of characteristic values of fabrics not only here in the injection method but in the conventional wet paper method.
    From the above devices, we estimated heat and moisture transport properties for several kinds of fabrics and compared them with the results of the previous report.
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  • [title in Japanese]
    S Moriya
    1992 Volume 45 Issue 3 Pages P147-P156
    Published: March 25, 1992
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.45.3_P147
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  • [title in Japanese]
    K Matsumoto
    1992 Volume 45 Issue 3 Pages P157-P165
    Published: March 25, 1992
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.45.3_P157
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  • [title in Japanese]
    Y Endo
    1992 Volume 45 Issue 3 Pages P166-P170
    Published: March 25, 1992
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.45.3_P166
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  • [title in Japanese]
    1992 Volume 45 Issue 3 Pages P171-P174
    Published: March 25, 1992
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.45.3_P171
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  • [title in Japanese]
    K Yasui
    1992 Volume 45 Issue 3 Pages P175-P182
    Published: March 25, 1992
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.45.3_P175
    JOURNAL FREE ACCESS
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