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Volume 22 (1996)
- Issue 6 Pages 203-
- Issue 5 Pages 165-
- Issue 4 Pages 123-
- Issue 3 Pages 85-
- Issue 2 Pages 41-
- Issue 1 Pages 1-
Volume 22, Issue 2
Displaying 1-5 of 5 articles from this issue
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Koji KAMIMURA, Pierre PARROT1996 Volume 22 Issue 2 Pages 41-44
Published: March 15, 1996
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (3033K) -
Masatoshi FURUYAMA, Kazutami MITANI, Kenji FUKUTA, Mitsuaki MATSUMOTO1996 Volume 22 Issue 2 Pages 45-53
Published: March 15, 1996
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSMechanical properties of multi-axis three-dimensional fabric composite materials are considered to be influenced by molding condition and molding defects. Off-axial compressive properties, which are sensitive to defects, have been studied for rod piercing type threeaxially reinforced threedimensional (3D3A) composites. The following results are obtained. (1) Initial failure on the off-axial compression of the 3D3A composites was detected as drifts of apparent Poisson's ratio. And that of composites without defects was found to be generated as interfacial debonding at the definite corners of rod at which tensile stress concentrates. On the other hand, in the case of the composite having molding defects, the initial failure was developed from the defects as starting points. (2) The compressive modulus was depressed by the presence of defects. The stress at the initial failure depended mainly on the defects and slightly on the molding pressure of the composite. Interfacial strength between rod and matrix, however, had little influence upon the off-axial compressive properties.View full abstractDownload PDF (10609K) -
Katsutoshi YAMADA, Syouichi SEKIGUCHI, Keizo HASHIMOTO, Itaru AOKI1996 Volume 22 Issue 2 Pages 54-63
Published: March 15, 1996
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSSeveral methods to obtain the interfacial shear strength between the carbon fibers and the matrix of the carbon fiber reinforced aluminium alloys (CFRM : two PAN based high modulus and a PAN based high strength CFs, Vf=70%) have been evaluated. The punch-out test using a specimen of sliced FRM having a thickness of about 1mm cut off perpendicular to the fibers was used successfully to obtain the interfacial shear strength of the FRMs in the case of a high fiber volume fraction of about 70%. In this method, it was considered from a geometrical analysis that the interfacial shear strength was obtained only when the volume fraction of the fibers was over 60%, as the fracture propagate mainly through the interface. The CFRMs with high modulus CFs and a matrix of Al-7.8%Mg alloy show a low interfacial shear strength of 14 MPa. The CFRMs with CFs of high modulus type and a matrix of Al-7.1% Si-0.36%Mg alloy exhibit a slightly higher interfacial shear strength of 16-27 MPa. CFRMs with high strength CFs and a matrix of Al-7.8%Mg alloy show a very high interfacial shear strength of 165 MPa and CFRMs with high tensile CF and a matrix of Al-7.1%Si-0.36%Mg also exhibit a high interfacial shear strength of 76 MPa.View full abstractDownload PDF (8414K) -
Takashi ISHIKAWA, Masamichi MATSUSHIMA, Yoichi HAYASHI1996 Volume 22 Issue 2 Pages 64-75
Published: March 15, 1996
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSNumerical predictions of linear buckling and post-buckling behavior of CFRP T-Stiffeners are conducted by Finite Element Analysis. Such behavior is crucially important in aircraft structural design. Comparison between numerical predictions and experimental behavior is executed detailedly. Width to thickness ratio in flange or web mainly governs linear buckling stresses. Inserted filler along the intersection line between flange and web also affect considerably the linear buckling behavior. By taking realistic initial imperfection into account, geometrical nonlinear analysis provides fairly descriptive post-buckling deflection behavior in flange and web. It is also possible to predict the final failure stress by assuming simple failure criteria and non-progressive failure.View full abstractDownload PDF (9988K) -
Takashi ISHIKAWA1996 Volume 22 Issue 2 Pages 76-81
Published: March 15, 1996
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (825K)
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