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Volume 15 (1989)
- Issue 6 Pages 235-
- Issue 5 Pages 185-
- Issue 4 Pages 137-
- Issue 3 Pages 89-
- Issue 2 Pages 49-
- Issue 1 Pages 1-
Volume 15, Issue 6
Displaying 1-8 of 8 articles from this issue
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Takeyuki YONEZAWA, Yasuhiro GOTO, Akihiko TSUGE1989 Volume 15 Issue 6 Pages 235-240
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
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Yoshihide FUKAHOR1989 Volume 15 Issue 6 Pages 241-245
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
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Toshihiro AOYAMA, Shigeru KATSUMATA1989 Volume 15 Issue 6 Pages 246-250
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
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Satoshi ARAKI, Akira IWAWAK, Yoshinori UMEZAWA, Yoshiharu SHITARA1989 Volume 15 Issue 6 Pages 250-253
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
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Takashi KATO1989 Volume 15 Issue 6 Pages 253-257
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
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[in Japanese]1989 Volume 15 Issue 6 Pages 257a
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
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Y. SAWADA, K. FUJITA, M. ISHIGAMI1989 Volume 15 Issue 6 Pages 258-265
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSThe aim of this contribution is to give the procedure of the digestion method for the determination of fiber content of metal matrix composites. In order to discuss the method, silicon carbide whisker reinforced aluminum alloys were digested by some solutions. The suitable acidic or basic solution to digest the matrix and the procedure to clean the collected fiber depend upon the chemical characteristics of the fiber and the matrix. Some alloying elemets in the matrix are insoluble in the digestion solutions. And some fragment of the fiber may pass through the filter to collect the fiber. Accordingly, it is not enough to correct for the weight loss of the fiber by the digestion procedure, as ASTM D 3553. But these are also necessary to correct for the insoluble-filtered fraction in the matrix and to correct for collecting efficiency of the fiber by the filter. The opening size of the filter to collect the fiber should be determined from the size of the fiber diameter or fragment in the composite being tested. The used silicon carbide whisker is oxidized in dry air below 400°C accompanied by a weight increase. For the precise determination of the fiber content of metal matrix composites by digestion method, corrections should be done for the insoluble-filtered fraction in the matrix and the weight change of the fiber during the procedures of digestion, filtering and drying.View full abstractDownload PDF (1967K) -
H. SUEMASU, M. KOZU, K. SHIBA1989 Volume 15 Issue 6 Pages 266-272
Published: November 15, 1989
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSInterlaminar toughness which is generally treated as a material constant is used as a quantity to express strength or toughness of the interlaminar region of composite laminates. As discussed by many researchers, the fracture toughness of the material depends on the fracture modes or process, that is, on the mechanism of the failure. So, the interlaminar toughness of composite laminates may depend on the inclination of the delamination propagating direction to the fiber even in the same mode fracture, because the micromechanical failure process at the delamination front may differ due to the differences of the micro-mechanical structures and the stress distributions at the neighborhood of the delamination front. In the present paper, mode I fracture toughnesses GIC of a carbon fiber woven composite are measured about various inclinations of delamination propagations to the fiber direction and its dependence on the inclination angle are investigated.View full abstractDownload PDF (6544K)
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