Journal of the Japan Society for Composite Materials
Online ISSN : 1884-8559
Print ISSN : 0385-2563
ISSN-L : 0385-2563
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Volume 19, Issue 1
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1993 Volume 19 Issue 1 Pages 1-2
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.1
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Tetsu MATOBA
    1993 Volume 19 Issue 1 Pages 3-7
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.3
    JOURNAL FREE ACCESS
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  • Elastic Constant and Strength of Three-Dimensional Composite Material
    A. HIJIKATA, A, MORI, K. FUKUTA
    1993 Volume 19 Issue 1 Pages 8-14
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.8
    JOURNAL FREE ACCESS
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    Three-dimensional composites were made firstly by orientating fiber bundles in roving or rodlike shape unidirectional composites and secondarily molded with resin. To evaluate the elastic constants and the strength of the 3-D composites, an analytical method was developed adopting the orthogonal anisotropic theory of elasticity. Tensile and compressive tests on orthogonal three axis 3-D CFRP were also made, and the results of elastic constants and initial breaking strength were compared with the theoretical values. The test result showed good agreement with the analytical result. Furthermore, these mechanical properties were evaluated for 3-D composites consisting of 3 to 7-axis by using the analytical method. As the results, it was found that 7 axis were advantageous to pseudo-isotropic material, and 4 or 5 axis to anisotropic material.
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  • Residual Strength and Its Distribution of SiC/Al-Alloy Composites Wires after Cyclic Loading
    H. FUKUNAGA, Y. LU, J. HAMADA
    1993 Volume 19 Issue 1 Pages 15-19
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.15
    JOURNAL FREE ACCESS
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    The practical application of FRM to the structural components requests us to investigate the residual strength of the composites after cyclic loading. The tensile test of SiC/Al-Alloy composites wires after cyclic loading was carried out, and the effect of number of cycles and stress amplitude on the residual strength and its distribution was examined. The residual strength decreased about six percent and the scatter slightly increased at the initial one cycle of loading then these two values kept constant up to about one hundred cycles, with the stress amplitude of eighty percent of the tensile strength. When the stress amplitude increased, the residual strength decreased and the scatter increased. Applying the proof test to the composites, it was found that the proof testing stress did not always guarantee the proof stress of the composites. A method to revise the proof stress was newly proposed by using the experimental data of the residual strength taking account of the decrement of the strength by the proof test.
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  • Flexural Creep Behavior of Epoxy Resin and Transversal Direction of Fibers in CFRP
    Y. MIYANO, M. KASAMORI, Y. HIRAZAKURA
    1993 Volume 19 Issue 1 Pages 20-25
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.20
    JOURNAL FREE ACCESS
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    This paper is concerned with the prediction of flexural creep behavior of neat epoxy resin in CFRP and transversal direction of fibers in unidirectional CFRP. Short and medium term flexural creep tests for the epoxy resin were carried out at various temperatures. Long term creep behavior predicted by applying the reciprocation law between time and temperature to the short and medium term creep behavior measured at various temperatures is not well agreed with that measured by long term creep test at a constant temperature. Therefore, the modified reciprocation law between time and temperature was proposed. The long term creep behavior predicted by this modified law is fairly well agreed with that of measured directly. Furthermore, long term creep behavior in transversal direction of fibers in unidirectional CFRP predicted by applying the approximate average method to the long term creep behavior of matrix epoxy resin is fairly well agreed with that measured directly by the long term creep test of the CFRP.
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  • [title in Japanese]
    Hironori MAIKUMA, Kenji KUBOMURA, Ryozabro MATSUI, Kunio NAKANO, Hiros ...
    1993 Volume 19 Issue 1 Pages 26-28
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.26
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  • [title in Japanese]
    Akira NISHIMURA, Kiyoshi HOMMA, Junichi MATSUI
    1993 Volume 19 Issue 1 Pages 29-31
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.29
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Susumu NAKAI, Tsuneo KINJO, Akinori MATSUURA, Shoji MAEKAWA, Kozo YUDA ...
    1993 Volume 19 Issue 1 Pages 32-34
    Published: January 15, 1993
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.19.32
    JOURNAL FREE ACCESS
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