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 9, Issue 3
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1983 Volume 9 Issue 3 Pages 89-92
    Published: July 31, 1983
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.9.89
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Rikio YOKOTA
    1983 Volume 9 Issue 3 Pages 92-100
    Published: July 31, 1983
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.9.92
    JOURNAL FREE ACCESS
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  • Crack Initiation at the Sharp Edges of Dispersed Inclusions and the Energy Release Rate
    O. TAMATE, H. SEKINE, Y. OZAWA
    1983 Volume 9 Issue 3 Pages 101-107
    Published: July 31, 1983
    Released on J-STAGE: February 08, 2010
    DOIhttps://doi.org/10.6089/jscm.9.101
    JOURNAL FREE ACCESS
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    The crack initiation at the sharp edges of dispersed inclusions plays an important role in the strength of dispersion composite materials. This paper discusses the crack initiation at the tips of a flat inclusion from the viewpoint of energy release rate. On the basis of the two-dimensional theory of elasticity, numerical calculations are carried out for the energy release rate for the crack initiation. The maximum energy release rate and its direction for Poisson's ratio of matrices are figured. The tension and equivalent compression tests are performed by using epoxy resin specimens containing a flat steel inclusion. The theoretical result for the direction of the maximum energy release rate is compared with the observed crack initiation angle. Both results coincide fairly for tension tests, while they do not coincide for compression tests.
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  • Fabrication and Some Mechanical Properties of Explosively Compacted Stainless Steel/Aluminium Composites
    A. CHIBA, M. FUJITA, H. TONDA, K. HOKAMOTO
    1983 Volume 9 Issue 3 Pages 108-114
    Published: July 31, 1983
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.9.108
    JOURNAL FREE ACCESS
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    Two kinds of aluminum base composites, wire-reinforced and multilayered with stainless-steel wire meshes and foils as the reinforcements have been fabricated by means of explosive welding. Explosive welding in a low vacuum with “middle” and “base” plate inserts was examined to solve such problems as poor-bonding and local fracture of the composite constituents. Good bonding was then attained without forming voids or cracks. Electron-probe micro-analysis also revealed no evidence of diffusion of the constitutive elements across the interface. The bonding mechanism of multilayered composites was the same as in the common explosive welding, whereas that of wire-reinforced composites could be attributed to cold pressure welding of the matrix metal extruded through the mesh apertures. The UTS values of the wirereinforced composites were slightly lower than those expected from the so-called rule of mixtures (ROM). Multilayered composites, on the other hand, showed reasonable UTS values compared with ROM predictions. These composites also showed high ductility.
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  • Fabrication and Properties of Tubular Type Composite by the Squeeze Casting Method
    E. NAKATA, Y. KAGAWA, H. TERAO
    1983 Volume 9 Issue 3 Pages 115-117
    Published: July 31, 1983
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.9.115
    JOURNAL FREE ACCESS
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    A simple technique for fabricating the metal matrix tubular type composite is described. SiC fiber was used as a reinforcement and was incorporated into the aluminium matrix by squeeze casting technique. The tubular type composite was cut into ring type specimen and tensile-tested at the temperature of 293, 623 and 723 K. The tubular type composite consists of a composite layer and an aluminium layer. The thickness of the composite layer could be controlled by the thickness of the wound SiC fiber layer before casting. The volume fraction of the composite layer was about 40% and did not change with the thickness of the SiC fiber layers prior to the casting. Tensile fracture behavior of the ring type composite changed remarkably with the composite layer thickness. Tensile strength decreased with increasing the testing temperature.
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  • [title in Japanese]
    Hiroshi FUKUDA
    1983 Volume 9 Issue 3 Pages 118-123
    Published: July 31, 1983
    Released on J-STAGE: August 11, 2009
    DOIhttps://doi.org/10.6089/jscm.9.118
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  • [title in Japanese]
    1983 Volume 9 Issue 3 Pages 126-128
    Published: July 31, 1983
    Released on J-STAGE: February 08, 2010
    DOIhttps://doi.org/10.6089/jscm.9.126
    JOURNAL FREE ACCESS
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