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 18, Issue 1
Displaying 1-11 of 11 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1992 Volume 18 Issue 1 Pages 1-2
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.1
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Yutaka KAGAWA
    1992 Volume 18 Issue 1 Pages 3-5
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.3
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Shigeru HASUMI
    1992 Volume 18 Issue 1 Pages 6-9
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.6
    JOURNAL FREE ACCESS
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  • Effect of Biaxiality Ratio under Combined Stress on Fatigue Notch Factor in Composites with a Hole
    S. AMIJIMA, T. FUJII, K. OKUBO, T. SHINA
    1992 Volume 18 Issue 1 Pages 10-16
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.10
    JOURNAL FREE ACCESS
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    This paper describes the effect of the biaxially combined stress ratio on the notch factor of the hole notched composite. Specimen was subjected to the tension-torsion fatigue loading. The notch factor has a liner relation with cos (tan-1α) in all numbers of loading cycles discussed in this study (α: biaxially combined stress ratio). An equation that can empirically predict the notch factor is proposed. The notch factor decreases with an increase of number of cycles, in the case of low applied shear stress. This is caused by the stress relaxation in the stress concentrated region near the hole due to fatigue damage. When, however, the shear component of the applied stress is high, slight decreasing of the notch factor is observed. Especially in the case of pure shear loading it increases with an increase of cyclic number, because the remarkably damaged area does not progress to the stress concentrated region but along the fiber bundle. In this case the stress concentration is aggravated in the fatigue process. This study proposes the stress relaxation and aggravation model which can explain the change of the notch factor under fatigue loading.
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  • Compressive and Interfacial Strength of Skeletonized 3D Composites
    T. TAKEI, H. HATTA, T. SUGANO
    1992 Volume 18 Issue 1 Pages 17-27
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.17
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    Three-dimensionally reinforced porous composites (skeletonized 3D composites; 3DSCMs) were fabricated by use of a rod piercing method. The aim to introduce the porosity in 3DSCMs is to reduce the weight and the thermal expansion of the material with minimum reduction of the strength. In this paper, the compressive strength and the interfacial shearing strength of 3DSCMs were evaluated and the following conclusions were obtained. 1) The ultimate strength of 3DSCMs took almost the same value as that of the 3D composites without porosity, even if the volume fraction of the pores was very high. 2) Energy absorption during the compressive test to the 45°direction from the reinforcing axes was much higher compared with the ordinary laminate composites. 3) Interfacial strength was remarkably improved by application of surface sanding or primer treatment to the reinforcing rod.
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  • Compatibility of Oxide Coated Carbon Fibers with Aluminum
    A. KITAHARA, S. AKIYAMA, H. UENO
    1992 Volume 18 Issue 1 Pages 28-32
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.28
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    Oxide coating on carbon fiber by ion-plating method was investigated in order to improve the compatibility of carbon fiber (CF) with aluminum (Al). Five oxides such as calcia (CaO), magnesia (MgO), alumina (Al2O3), zirconia (ZrO2) and titania (TiO2), were used for the coating. First, the oxide coatings were evaluated as a reaction barrier between CF and Al. MgO was the best reaction barrier agent among the oxides tested and prevented perfectly the degradation in strength of Al coated CF after heating up to 873 K for 18 ks. CaO and Al2O3 had also fair effect for the reaction barrier between CF and Al and prevented the degradation in strength of Al coated CF after heating up to 823 K. ZrO2 and TiO2, however, reacted with Al and caused remarkably the degradation in strength of CF. Next, the oxide coatings were evaluated as a wetting agent to molten aluminum by SEM observation of the wetting state of molten Al on carbon fibers after heating at 1, 023 K for 3.6ks. The oxides increased the wettability in the following order: TiO2, Al2O3, CaO, MgO, and ZrO2.
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  • [title in Japanese]
    Yasuo TADA
    1992 Volume 18 Issue 1 Pages 33-38
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.33
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  • [title in Japanese]
    Minoru KOBAYASHI, Kazuo OGASAWARA, Tetsuya YAMAMOTO, Shoichiro ASADA, ...
    1992 Volume 18 Issue 1 Pages 39-42
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.39
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  • [title in Japanese]
    Susumu NOROTA
    1992 Volume 18 Issue 1 Pages 43-45
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.43
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  • [title in Japanese]
    Shigeyuki AKIHAMA, Tatsuo SUENAGA, Hiroaki NAKAGAWA, Yoshikazu TANIGUC ...
    1992 Volume 18 Issue 1 Pages 45-47
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.45
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Yoshikazu IMAI, Hiroshi ICHIKAWA, Toshikatsu ISHIKAWA
    1992 Volume 18 Issue 1 Pages 48-51
    Published: January 15, 1992
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.18.48
    JOURNAL FREE ACCESS
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