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 3
Displaying 1-10 of 10 articles from this issue
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  • [title in Japanese]
    Nobuya KURIHARA, Syuji HIROMOTO
    1986 Volume 12 Issue 3 Pages 97-102
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.97
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Tateo HOSOMURA, Teruo SOFUE
    1986 Volume 12 Issue 3 Pages 103-108
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.103
    JOURNAL FREE ACCESS
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  • On the Relation between Mechanical Properties of Carbon Fibres and Those of Composite Materials-Tensile Properties
    J. MATSUI, S. NOMURA, Y. ISHII
    1986 Volume 12 Issue 3 Pages 109-115
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.109
    JOURNAL FREE ACCESS
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    The relation between mechanical properties of reinforcing fibres and those of composite materials was studied using PAN based carbon fibres of various tensile strengths and tensile moduli of elasticity. The carbon fibres used in the examination were six kinds of fibres of which tensile strengths were in a range of 2, 400 MPa to 5, 600 MPa and tensile moduli of 240 GPa to 460 GPa. Epoxy resin systems of 177°C and 121°C curing type were used as matrices.In the present paper 0°(longitudinal) and 90°(transverse) tensile properties for unidirectional composites are discussed. 0°tensile moduli and 0°tensile strengths are in proportion to those of the fibres, respectively, and can be explained well by a rule of mixture. Properties of the matrix resins have an influence in some extent on 0°tensile strength. 90°tensile moduli of CFRP have a tendency to lower slightly with increasing rigidity of the fibre. 90°tensile strengths of carbonized-fibre composites are higher than those of graphitized-fibre composites. In the latter, fibre to resin bonding is not so good that the 90°tensile strength is subjected to strength of the bonding.
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  • Axial Compressive Bucklings of Hybrid FRP Sandwich Circular Cylinders with Soft Core
    O. BYON, H. OHTA, M. UEMURA
    1986 Volume 12 Issue 3 Pages 116-122
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.116
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    The buckling of hybrid FRP sandwich circular cylinders under axial compression was analysed, which had both faces with different elastic orthotropies and thicknesses and orthotropic core. In a particular case of sandwich cylinders with soft core having low shear rigidity, an explicit expression for buckling load with axially symmetric mode could be presented. In order to verify the above analysis, experiments were carried out on the three kinds of hybrid sandwich cylinders which have aluminum inner face, filament-wound or aluminum outer face and poly-urethane formed core, which would be useful for the low-temperature liquid container. It was found that the buckling took place in shear mode in core with almost the same values as predicted in the analysis.
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  • Detection of Internal Defects of CFRP by Using Holographic Interference Techniques
    H. YOSHIDA, T. BABA
    1986 Volume 12 Issue 3 Pages 123-126
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.123
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    The validity of the holographic interference technique to detect the internal defects of carbon fiber reinforced plastics (CFRP) was examined. Using the CFRP specimens with artificially formed defects, the detector of the delamination and the internal cavity were tested by using a vibrational excitation method and a vacuum stressing and thermal stressing methods, respectively. As the result, the delamination more than about 30 mm in diameter could be detected by the vibrational excitation method, and the internal cavity more than about 5 mm in diameter by the vacuum stressing and the thermal stressing methods. The vibrational excitation and the thermal stressing methods were valid to detect the presence of the defects but were insufficient to determine the size and shape of defects. The position and dimension of defects could be detected clearly by use of the vacuum stressing method.
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  • [title in Japanese]
    Yoichi ISHIDA
    1986 Volume 12 Issue 3 Pages 127-132
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.127
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  • [title in Japanese]
    Tsuyoshi HAYASHI
    1986 Volume 12 Issue 3 Pages 133-135
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.133
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  • [title in Japanese]
    Eiichiro SHIN
    1986 Volume 12 Issue 3 Pages 135-138
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.135
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Suketada MOMOSHIMA
    1986 Volume 12 Issue 3 Pages 138-139
    Published: May 15, 1986
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.12.138
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1986 Volume 12 Issue 3 Pages 141-142
    Published: May 15, 1986
    Released on J-STAGE: February 08, 2010
    DOIhttps://doi.org/10.6089/jscm.12.141
    JOURNAL FREE ACCESS
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