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 12, Issue 4
Displaying 1-6 of 6 articles from this issue
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  • [title in Japanese]
    Koichi HIRAOKA
    1986 Volume 12 Issue 4 Pages 145-156
    Published: July 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.145
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Taketo UOMOTO
    1986 Volume 12 Issue 4 Pages 156-162
    Published: July 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.156
    JOURNAL FREE ACCESS
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  • Study on Complex Modulus of FRR
    K. FUJIMOTO, K. KABE, T. ISHIGAMI
    1986 Volume 12 Issue 4 Pages 163-170
    Published: July 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.163
    JOURNAL FREE ACCESS
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    FRR (Fiber Reinforced Rubber) has been applied to many constructions. But, few study on the dynamic property has been reported. In the present work, the longitudinal complex moduli and the dynamic property of FRR at small strain are studied based on the law of mixtures, the theory of elasticity, and the theory of linear viscoelasticity. The free decay vibration method was utilized in the study. Materials with fibers at +θ (off-axis), ±θ (bias-ply) were investigated. The complex moduli of the off-axial FRR and the bias-ply FRR can be estimated as the factors of the shear strain and that of the internal shear strain respectively.
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  • Flexural Fracture Behavior of Carbon/Aramid Hybrid Unidirectional Reinforced FRP
    S. AMAGI, M. WAJIMA, Y. MIYANO
    1986 Volume 12 Issue 4 Pages 171-176
    Published: July 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.171
    JOURNAL FREE ACCESS
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    Flexural failure behavior of unidirectional laminate FRPs reinforced with carbon fiber and aramid fiber were studied. A flexural experimental investigation has been carried out on carbon/epoxy (type C), aramid/epoxy (type A) and C/A hybrid (type A-C-A, C-A-C) laminates. As the results, it was found that 1) A kink band was observed for type A and type A-C-A at the compressive surface near the loading point by a low level flexural load. 2) The load diflection curves of type A and type A-C-A had a knee point, and loading over the knee point, a white regions was observed at the compressive surface near the loading point. 3) The stress at the knee point of type A and type A-C-A was lower than the critical stress of microbuckling calculated by the Dow's equation. This reason was caused by the decrease of the observed compressive modulus of aramid fiber producing kink band. 4) Tensile and shearing fracture was observed for type A and type A-C-A over the maximum load. The scale of the shearing fracture of type A-C-A was smaller than that of type A's, and this was caused by the support of CFRPs layers. 5) Shearing fracture was observed for type C and type C-A-C at the compressive surface near the loading point over the maximum load. This fracture was induced by a microbuckling of carbon fiber, and was arrested at the AFRPs layers.
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  • [title in Japanese]
    Taira OKAMOTO, Katsuaki SUGANUMA
    1986 Volume 12 Issue 4 Pages 177-183
    Published: July 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.177
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1986 Volume 12 Issue 4 Pages 185-187
    Published: July 15, 1986
    Released on J-STAGE: February 08, 2010
    DOIhttps://doi.org/10.6089/jscm.12.185
    JOURNAL FREE ACCESS
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