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Volume 23 (1997)
- Issue 6 Pages 199-
- Issue 5 Pages 161-
- Issue 4 Pages 121-
- Issue 3 Pages 81-
- Issue 2 Pages 41-
- Issue 1 Pages 1-
Volume 23, Issue 6
Displaying 1-6 of 6 articles from this issue
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[in Japanese]1997 Volume 23 Issue 6 Pages 199
Published: November 15, 1997
Released on J-STAGE: August 11, 2009
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Kazuaki AMAOKA, Toshimi TAKI1997 Volume 23 Issue 6 Pages 200-206
Published: November 15, 1997
Released on J-STAGE: August 11, 2009
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Hiroshi MAKI1997 Volume 23 Issue 6 Pages 206-210
Published: November 15, 1997
Released on J-STAGE: August 11, 2009
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Tsuneshichi TANAKA, Hideaki NAKAYAMA, Masayuki IDE, Noriyo HORIKAWA1997 Volume 23 Issue 6 Pages 211-219
Published: November 15, 1997
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSFatigue tests and fatigue crack growth tests were conducted under sinusoidal tensile load using a sintered aluminum alloy A2024-T6 reinforced with 20% SiC particles in volume. Monolithic specimens of aluminum alloy A2024-T6 were used to obtain the reference data. Fatigue tests under repeated impacts were also conducted to examine the effect of the impact load on the fatigue strengths of both materials. It was found that the particle reinforced aluminum alloy (PRM) has a higher fatigue strength and a lower resistance to the fatigue crack growth than the monolithic aluminum alloy. Re-aged monolithic aluminum alloy with higher hardness number was tested to find the effect of the hardness on the fatigue strength, but no difference of the strengths was observed between the original A2024-T6 specimens and re-aged ones. As one of the other factors, the X-ray residual stresses were measured for both materials, and considerable compressive stresses were observed in the PRM matrix. Therefore, it was concluded that the compressive stresses around SiC particles suppress the initiation of fatigue cracks and lead to the higher fatigue strength of the PRM. Additionally, it was found that the fatigue strengths of both materials under repeated impacts were lower than those under sinusoidal loads.View full abstractDownload PDF (5801K) -
Satoru HAYASAKI, Kazuo KITAGAWA, Tsuyoshi NISHIWAKI, Atsushi YOKOYAMA, ...1997 Volume 23 Issue 6 Pages 220-227
Published: November 15, 1997
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSThe damage propagation of quasi-isotropic poly-arylate fibre reinforced epoxy laminated compos-ites (ArFRP) subjected to a tensile load were investigated. We attempted to apply numerical simulation using a quasi-3-dimensional model and performed tensile tests of ArFRP and CFRP laminates as a reference. The quasi-3-dimensional model is constructed of shell elements and beam elements which represent the fibre and matrix, respectively. The damage propagation analyses of four-type ArFRP laminates [0/45/-45/90]sym, [0/45/90/-45]sym, [0/90/45/-45]sym and [-45/45/ 0/90]sym were performed and tested. Then, the same analyses of CFRP laminates were performed. Therefore it was found that the quasi-3-dimensional model was effective for the estimation of stress-strain relationships of both the laminates. Some differences of damage propagation between ArFRP and CFRP were also clarified.View full abstractDownload PDF (5807K) -
Hiroshi SUEMASU, Takahira AOKI, Yoshio AOKI, Shinji OGIHARA, Kazuro KA ...1997 Volume 23 Issue 6 Pages 228-236
Published: November 15, 1997
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (2722K)
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